./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi008.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/rfi008.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi008.opt.i ./goblint.2024-05-21_14-57-05.files/protection/rfi008.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 15:28:17,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:28:17,195 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:28:17,200 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:28:17,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:28:17,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:28:17,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:28:17,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:28:17,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:28:17,236 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:28:17,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:28:17,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:28:17,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:28:17,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:28:17,239 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:28:17,239 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:28:17,239 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:28:17,240 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:28:17,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:28:17,240 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:28:17,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:28:17,241 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:28:17,241 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:28:17,242 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:28:17,242 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:28:17,242 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:28:17,242 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:28:17,243 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:28:17,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:28:17,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:28:17,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:28:17,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:28:17,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:28:17,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:28:17,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:28:17,246 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:28:17,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:28:17,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:28:17,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:28:17,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:28:17,247 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:28:17,248 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:28:17,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:28:17,248 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:28:17,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:28:17,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:28:17,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:28:17,485 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:28:17,485 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:28:17,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi008.opt.yml/witness.yml [2024-06-04 15:28:17,672 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:28:17,672 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:28:17,673 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi008.opt.i [2024-06-04 15:28:18,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:28:19,095 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:28:19,098 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.opt.i [2024-06-04 15:28:19,119 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca36024c/ec8b1254d2ee46e2bfbdb1f5ae854edd/FLAG9eefcaa0e [2024-06-04 15:28:19,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca36024c/ec8b1254d2ee46e2bfbdb1f5ae854edd [2024-06-04 15:28:19,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:28:19,138 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:28:19,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:28:19,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:28:19,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:28:19,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:28:17" (1/2) ... [2024-06-04 15:28:19,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525a3195 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:28:19, skipping insertion in model container [2024-06-04 15:28:19,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:28:17" (1/2) ... [2024-06-04 15:28:19,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@600f61e7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:28:19, skipping insertion in model container [2024-06-04 15:28:19,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:28:19" (2/2) ... [2024-06-04 15:28:19,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525a3195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19, skipping insertion in model container [2024-06-04 15:28:19,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:28:19" (2/2) ... [2024-06-04 15:28:19,166 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:28:19,238 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:28:19,239 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-04 15:28:19,239 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-04 15:28:19,239 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:28:19,239 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-04 15:28:19,282 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:28:19,615 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:28:19,628 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:28:19,797 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:28:19,850 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:28:19,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19 WrapperNode [2024-06-04 15:28:19,852 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:28:19,853 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:28:19,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:28:19,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:28:19,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19" (1/1) ... [2024-06-04 15:28:19,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19" (1/1) ... [2024-06-04 15:28:19,926 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-04 15:28:19,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:28:19,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:28:19,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:28:19,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:28:19,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19" (1/1) ... [2024-06-04 15:28:19,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19" (1/1) ... [2024-06-04 15:28:19,944 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19" (1/1) ... [2024-06-04 15:28:19,962 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-04 15:28:19,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19" (1/1) ... [2024-06-04 15:28:19,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19" (1/1) ... [2024-06-04 15:28:19,971 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19" (1/1) ... [2024-06-04 15:28:19,973 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19" (1/1) ... [2024-06-04 15:28:19,975 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19" (1/1) ... [2024-06-04 15:28:19,976 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19" (1/1) ... [2024-06-04 15:28:19,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:28:19,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:28:19,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:28:19,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:28:19,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19" (1/1) ... [2024-06-04 15:28:19,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:28:19,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:28:20,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-04 15:28:20,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-04 15:28:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:28:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:28:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:28:20,040 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:28:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:28:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:28:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:28:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:28:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:28:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:28:20,042 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 15:28:20,157 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:28:20,158 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:28:20,522 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:28:20,523 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:28:20,743 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:28:20,744 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:28:20,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:28:20 BoogieIcfgContainer [2024-06-04 15:28:20,747 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:28:20,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:28:20,751 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:28:20,754 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:28:20,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:28:17" (1/4) ... [2024-06-04 15:28:20,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be4d4c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:28:20, skipping insertion in model container [2024-06-04 15:28:20,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:28:19" (2/4) ... [2024-06-04 15:28:20,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be4d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:28:20, skipping insertion in model container [2024-06-04 15:28:20,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:28:19" (3/4) ... [2024-06-04 15:28:20,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be4d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:28:20, skipping insertion in model container [2024-06-04 15:28:20,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:28:20" (4/4) ... [2024-06-04 15:28:20,762 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi008.opt.i [2024-06-04 15:28:20,781 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:28:20,781 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 15:28:20,782 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:28:20,830 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:28:20,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 15:28:20,903 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-04 15:28:20,903 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:28:20,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:28:20,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 15:28:20,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-04 15:28:20,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:28:20,930 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f2c89cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:28:20,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 15:28:20,955 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:28:20,955 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-04 15:28:20,956 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:28:20,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:20,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:28:20,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:20,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:20,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1642904383, now seen corresponding path program 1 times [2024-06-04 15:28:20,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:20,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406911548] [2024-06-04 15:28:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:20,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:22,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:22,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406911548] [2024-06-04 15:28:22,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406911548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:22,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:22,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:28:22,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045131420] [2024-06-04 15:28:22,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:22,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:28:22,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:22,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:28:22,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:28:22,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-04 15:28:22,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:22,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:22,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-04 15:28:22,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:22,429 INFO L124 PetriNetUnfolderBase]: 131/262 cut-off events. [2024-06-04 15:28:22,429 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-04 15:28:22,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 262 events. 131/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1025 event pairs, 75 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 506. Up to 235 conditions per place. [2024-06-04 15:28:22,435 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 22 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-04 15:28:22,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 119 flow [2024-06-04 15:28:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:28:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:28:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-06-04 15:28:22,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-04 15:28:22,448 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 57 transitions. [2024-06-04 15:28:22,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 119 flow [2024-06-04 15:28:22,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 15:28:22,453 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-04 15:28:22,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-04 15:28:22,457 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-04 15:28:22,458 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-04 15:28:22,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:22,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:22,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:22,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:28:22,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:22,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:22,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1717139950, now seen corresponding path program 1 times [2024-06-04 15:28:22,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:22,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766335795] [2024-06-04 15:28:22,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:22,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:23,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:23,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766335795] [2024-06-04 15:28:23,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766335795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:23,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:23,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:28:23,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404994378] [2024-06-04 15:28:23,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:23,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:28:23,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:23,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:28:23,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:28:23,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:28:23,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:23,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:23,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:28:23,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:23,378 INFO L124 PetriNetUnfolderBase]: 186/342 cut-off events. [2024-06-04 15:28:23,378 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-04 15:28:23,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 342 events. 186/342 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1273 event pairs, 94 based on Foata normal form. 2/341 useless extension candidates. Maximal degree in co-relation 771. Up to 319 conditions per place. [2024-06-04 15:28:23,381 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 28 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-04 15:28:23,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 165 flow [2024-06-04 15:28:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:28:23,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:28:23,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-04 15:28:23,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-04 15:28:23,383 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 67 transitions. [2024-06-04 15:28:23,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 165 flow [2024-06-04 15:28:23,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:28:23,385 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-04 15:28:23,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-04 15:28:23,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-04 15:28:23,387 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-04 15:28:23,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:23,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:23,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:23,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:28:23,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:23,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1683688252, now seen corresponding path program 1 times [2024-06-04 15:28:23,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:23,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540684125] [2024-06-04 15:28:23,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:23,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:24,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:24,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:24,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540684125] [2024-06-04 15:28:24,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540684125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:24,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:24,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:28:24,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208406660] [2024-06-04 15:28:24,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:24,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 15:28:24,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:24,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 15:28:24,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 15:28:24,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:28:24,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:24,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:24,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:28:24,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:24,501 INFO L124 PetriNetUnfolderBase]: 180/332 cut-off events. [2024-06-04 15:28:24,502 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-06-04 15:28:24,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 332 events. 180/332 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1220 event pairs, 52 based on Foata normal form. 4/334 useless extension candidates. Maximal degree in co-relation 827. Up to 291 conditions per place. [2024-06-04 15:28:24,505 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-04 15:28:24,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 217 flow [2024-06-04 15:28:24,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:28:24,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:28:24,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-04 15:28:24,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-04 15:28:24,507 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 82 transitions. [2024-06-04 15:28:24,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 217 flow [2024-06-04 15:28:24,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 15:28:24,509 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-04 15:28:24,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-04 15:28:24,510 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-04 15:28:24,510 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-04 15:28:24,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:24,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:24,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:24,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:28:24,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:24,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1621724491, now seen corresponding path program 1 times [2024-06-04 15:28:24,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:24,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916813286] [2024-06-04 15:28:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:24,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:25,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916813286] [2024-06-04 15:28:25,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916813286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:25,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:25,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:28:25,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012763618] [2024-06-04 15:28:25,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:25,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:28:25,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:25,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:28:25,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:28:25,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 15:28:25,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:25,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:25,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 15:28:25,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:25,514 INFO L124 PetriNetUnfolderBase]: 137/284 cut-off events. [2024-06-04 15:28:25,514 INFO L125 PetriNetUnfolderBase]: For 265/265 co-relation queries the response was YES. [2024-06-04 15:28:25,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 284 events. 137/284 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1097 event pairs, 57 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 749. Up to 243 conditions per place. [2024-06-04 15:28:25,517 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 25 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2024-06-04 15:28:25,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 201 flow [2024-06-04 15:28:25,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:28:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:28:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-04 15:28:25,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-04 15:28:25,519 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 5 states and 74 transitions. [2024-06-04 15:28:25,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 201 flow [2024-06-04 15:28:25,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 186 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 15:28:25,521 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 133 flow [2024-06-04 15:28:25,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-06-04 15:28:25,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-04 15:28:25,522 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 133 flow [2024-06-04 15:28:25,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:25,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:25,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:25,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:28:25,523 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:25,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:25,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2129581982, now seen corresponding path program 1 times [2024-06-04 15:28:25,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:25,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982331765] [2024-06-04 15:28:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:25,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:26,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:26,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982331765] [2024-06-04 15:28:26,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982331765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:26,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:26,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:28:26,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434228232] [2024-06-04 15:28:26,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:26,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:28:26,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:26,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:28:26,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:28:26,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:28:26,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 133 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:26,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:26,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:28:26,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:27,237 INFO L124 PetriNetUnfolderBase]: 174/321 cut-off events. [2024-06-04 15:28:27,237 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-06-04 15:28:27,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 321 events. 174/321 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1150 event pairs, 29 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 922. Up to 262 conditions per place. [2024-06-04 15:28:27,240 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-06-04 15:28:27,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 271 flow [2024-06-04 15:28:27,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:28:27,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:28:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-04 15:28:27,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-04 15:28:27,243 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 133 flow. Second operand 7 states and 104 transitions. [2024-06-04 15:28:27,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 271 flow [2024-06-04 15:28:27,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 260 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 15:28:27,249 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 149 flow [2024-06-04 15:28:27,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=149, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-04 15:28:27,252 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-04 15:28:27,254 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 149 flow [2024-06-04 15:28:27,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:27,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:27,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:27,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:28:27,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:27,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:27,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1266149862, now seen corresponding path program 1 times [2024-06-04 15:28:27,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:27,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997388682] [2024-06-04 15:28:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:27,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:28,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:28,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997388682] [2024-06-04 15:28:28,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997388682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:28,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:28,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:28:28,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136216505] [2024-06-04 15:28:28,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:28,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:28:28,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:28,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:28:28,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:28:28,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 15:28:28,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:28,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:28,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 15:28:28,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:28,490 INFO L124 PetriNetUnfolderBase]: 129/268 cut-off events. [2024-06-04 15:28:28,491 INFO L125 PetriNetUnfolderBase]: For 515/515 co-relation queries the response was YES. [2024-06-04 15:28:28,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 268 events. 129/268 cut-off events. For 515/515 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1014 event pairs, 36 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 808. Up to 223 conditions per place. [2024-06-04 15:28:28,493 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 28 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-04 15:28:28,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 245 flow [2024-06-04 15:28:28,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:28:28,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:28:28,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-04 15:28:28,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-04 15:28:28,494 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 149 flow. Second operand 6 states and 86 transitions. [2024-06-04 15:28:28,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 245 flow [2024-06-04 15:28:28,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 223 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:28,497 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 160 flow [2024-06-04 15:28:28,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-04 15:28:28,498 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-04 15:28:28,498 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 160 flow [2024-06-04 15:28:28,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:28,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:28,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:28,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:28:28,499 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:28,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:28,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2075778054, now seen corresponding path program 1 times [2024-06-04 15:28:28,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:28,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850743648] [2024-06-04 15:28:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:28,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:29,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:29,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850743648] [2024-06-04 15:28:29,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850743648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:29,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:29,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:28:29,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056071356] [2024-06-04 15:28:29,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:29,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:28:29,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:29,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:28:29,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:28:29,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:29,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:29,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:29,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:29,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:29,583 INFO L124 PetriNetUnfolderBase]: 171/317 cut-off events. [2024-06-04 15:28:29,583 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-06-04 15:28:29,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 317 events. 171/317 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1133 event pairs, 43 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 1028. Up to 291 conditions per place. [2024-06-04 15:28:29,586 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-04 15:28:29,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 276 flow [2024-06-04 15:28:29,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:28:29,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:28:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-04 15:28:29,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:28:29,588 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 160 flow. Second operand 6 states and 78 transitions. [2024-06-04 15:28:29,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 276 flow [2024-06-04 15:28:29,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 259 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:29,590 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 176 flow [2024-06-04 15:28:29,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-04 15:28:29,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-04 15:28:29,591 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 176 flow [2024-06-04 15:28:29,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:29,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:29,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:29,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:28:29,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:29,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:29,593 INFO L85 PathProgramCache]: Analyzing trace with hash 595932692, now seen corresponding path program 2 times [2024-06-04 15:28:29,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:29,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138324429] [2024-06-04 15:28:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:29,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:30,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:30,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138324429] [2024-06-04 15:28:30,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138324429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:30,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:30,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:28:30,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202566247] [2024-06-04 15:28:30,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:30,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:28:30,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:30,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:28:30,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:28:30,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:30,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:30,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:30,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:30,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:30,494 INFO L124 PetriNetUnfolderBase]: 169/315 cut-off events. [2024-06-04 15:28:30,495 INFO L125 PetriNetUnfolderBase]: For 967/970 co-relation queries the response was YES. [2024-06-04 15:28:30,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 315 events. 169/315 cut-off events. For 967/970 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1135 event pairs, 47 based on Foata normal form. 3/315 useless extension candidates. Maximal degree in co-relation 1070. Up to 282 conditions per place. [2024-06-04 15:28:30,497 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-04 15:28:30,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 286 flow [2024-06-04 15:28:30,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:28:30,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:28:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-04 15:28:30,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-04 15:28:30,499 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 176 flow. Second operand 6 states and 77 transitions. [2024-06-04 15:28:30,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 286 flow [2024-06-04 15:28:30,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 269 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:30,501 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 202 flow [2024-06-04 15:28:30,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-06-04 15:28:30,503 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-04 15:28:30,503 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 202 flow [2024-06-04 15:28:30,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:30,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:30,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:30,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:28:30,504 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:30,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:30,505 INFO L85 PathProgramCache]: Analyzing trace with hash -103213844, now seen corresponding path program 1 times [2024-06-04 15:28:30,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:30,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750355178] [2024-06-04 15:28:30,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:30,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:31,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:31,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750355178] [2024-06-04 15:28:31,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750355178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:31,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:31,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:28:31,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412209338] [2024-06-04 15:28:31,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:31,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:28:31,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:31,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:28:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:28:31,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:31,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:31,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:31,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:31,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:31,585 INFO L124 PetriNetUnfolderBase]: 187/349 cut-off events. [2024-06-04 15:28:31,586 INFO L125 PetriNetUnfolderBase]: For 1292/1292 co-relation queries the response was YES. [2024-06-04 15:28:31,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280 conditions, 349 events. 187/349 cut-off events. For 1292/1292 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1285 event pairs, 43 based on Foata normal form. 2/349 useless extension candidates. Maximal degree in co-relation 1255. Up to 298 conditions per place. [2024-06-04 15:28:31,589 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 42 selfloop transitions, 16 changer transitions 0/61 dead transitions. [2024-06-04 15:28:31,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 405 flow [2024-06-04 15:28:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:31,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-04 15:28:31,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-04 15:28:31,591 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 202 flow. Second operand 8 states and 103 transitions. [2024-06-04 15:28:31,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 405 flow [2024-06-04 15:28:31,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 374 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:31,595 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 277 flow [2024-06-04 15:28:31,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=277, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-04 15:28:31,596 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-04 15:28:31,596 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 277 flow [2024-06-04 15:28:31,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:31,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:31,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:31,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:28:31,597 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:31,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:31,598 INFO L85 PathProgramCache]: Analyzing trace with hash 75241350, now seen corresponding path program 2 times [2024-06-04 15:28:31,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:31,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649153370] [2024-06-04 15:28:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:31,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:32,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:32,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:32,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649153370] [2024-06-04 15:28:32,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649153370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:32,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:32,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:28:32,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498076336] [2024-06-04 15:28:32,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:32,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:28:32,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:32,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:28:32,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:28:32,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:32,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 277 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:32,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:32,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:32,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:32,695 INFO L124 PetriNetUnfolderBase]: 193/361 cut-off events. [2024-06-04 15:28:32,695 INFO L125 PetriNetUnfolderBase]: For 1672/1672 co-relation queries the response was YES. [2024-06-04 15:28:32,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 361 events. 193/361 cut-off events. For 1672/1672 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1354 event pairs, 42 based on Foata normal form. 2/361 useless extension candidates. Maximal degree in co-relation 1403. Up to 300 conditions per place. [2024-06-04 15:28:32,702 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 42 selfloop transitions, 18 changer transitions 0/63 dead transitions. [2024-06-04 15:28:32,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 453 flow [2024-06-04 15:28:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:28:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:28:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-04 15:28:32,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-04 15:28:32,705 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 277 flow. Second operand 7 states and 92 transitions. [2024-06-04 15:28:32,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 453 flow [2024-06-04 15:28:32,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 63 transitions, 429 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 15:28:32,710 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 318 flow [2024-06-04 15:28:32,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-06-04 15:28:32,711 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-04 15:28:32,712 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 318 flow [2024-06-04 15:28:32,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:32,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:32,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:32,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:28:32,713 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:32,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:32,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1087392142, now seen corresponding path program 3 times [2024-06-04 15:28:32,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:32,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69076090] [2024-06-04 15:28:32,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:32,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:33,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:33,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69076090] [2024-06-04 15:28:33,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69076090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:33,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:33,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:28:33,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482190479] [2024-06-04 15:28:33,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:33,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:28:33,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:33,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:28:33,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:28:33,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:33,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 318 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:33,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:33,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:33,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:33,788 INFO L124 PetriNetUnfolderBase]: 199/373 cut-off events. [2024-06-04 15:28:33,788 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2024-06-04 15:28:33,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 373 events. 199/373 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1427 event pairs, 44 based on Foata normal form. 2/373 useless extension candidates. Maximal degree in co-relation 1533. Up to 299 conditions per place. [2024-06-04 15:28:33,792 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 40 selfloop transitions, 20 changer transitions 0/63 dead transitions. [2024-06-04 15:28:33,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 490 flow [2024-06-04 15:28:33,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:28:33,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:28:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-04 15:28:33,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-04 15:28:33,794 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 318 flow. Second operand 7 states and 92 transitions. [2024-06-04 15:28:33,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 490 flow [2024-06-04 15:28:33,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 443 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-04 15:28:33,798 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 340 flow [2024-06-04 15:28:33,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-04 15:28:33,798 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-04 15:28:33,799 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 340 flow [2024-06-04 15:28:33,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:33,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:33,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:33,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:28:33,799 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:33,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:33,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1087392359, now seen corresponding path program 1 times [2024-06-04 15:28:33,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:33,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963223448] [2024-06-04 15:28:33,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:33,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:34,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:34,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963223448] [2024-06-04 15:28:34,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963223448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:34,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:34,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:28:34,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124583282] [2024-06-04 15:28:34,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:34,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:28:34,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:34,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:28:34,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:28:34,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:34,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 340 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:34,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:34,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:34,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:35,206 INFO L124 PetriNetUnfolderBase]: 202/378 cut-off events. [2024-06-04 15:28:35,207 INFO L125 PetriNetUnfolderBase]: For 2086/2086 co-relation queries the response was YES. [2024-06-04 15:28:35,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1573 conditions, 378 events. 202/378 cut-off events. For 2086/2086 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1439 event pairs, 41 based on Foata normal form. 1/377 useless extension candidates. Maximal degree in co-relation 1543. Up to 337 conditions per place. [2024-06-04 15:28:35,210 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 49 selfloop transitions, 12 changer transitions 0/64 dead transitions. [2024-06-04 15:28:35,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 502 flow [2024-06-04 15:28:35,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:28:35,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:28:35,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-04 15:28:35,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-04 15:28:35,212 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 340 flow. Second operand 7 states and 88 transitions. [2024-06-04 15:28:35,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 502 flow [2024-06-04 15:28:35,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 453 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 15:28:35,218 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 334 flow [2024-06-04 15:28:35,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=334, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-04 15:28:35,219 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-04 15:28:35,219 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 334 flow [2024-06-04 15:28:35,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:35,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:35,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:35,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:28:35,222 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:35,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:35,222 INFO L85 PathProgramCache]: Analyzing trace with hash 80955270, now seen corresponding path program 4 times [2024-06-04 15:28:35,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:35,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416356983] [2024-06-04 15:28:35,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:35,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:36,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:36,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416356983] [2024-06-04 15:28:36,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416356983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:36,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:36,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:28:36,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865634760] [2024-06-04 15:28:36,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:36,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:28:36,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:36,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:28:36,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:28:36,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:36,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 334 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:36,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:36,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:36,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:36,390 INFO L124 PetriNetUnfolderBase]: 203/383 cut-off events. [2024-06-04 15:28:36,390 INFO L125 PetriNetUnfolderBase]: For 2417/2420 co-relation queries the response was YES. [2024-06-04 15:28:36,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1606 conditions, 383 events. 203/383 cut-off events. For 2417/2420 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1491 event pairs, 49 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 1575. Up to 294 conditions per place. [2024-06-04 15:28:36,393 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 24 changer transitions 0/65 dead transitions. [2024-06-04 15:28:36,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 504 flow [2024-06-04 15:28:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:28:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:28:36,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-04 15:28:36,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:28:36,395 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 334 flow. Second operand 7 states and 91 transitions. [2024-06-04 15:28:36,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 504 flow [2024-06-04 15:28:36,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 477 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 15:28:36,399 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 384 flow [2024-06-04 15:28:36,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-06-04 15:28:36,401 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-04 15:28:36,401 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 384 flow [2024-06-04 15:28:36,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:36,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:36,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:36,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:28:36,402 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:36,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:36,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1284361729, now seen corresponding path program 2 times [2024-06-04 15:28:36,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:36,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14031805] [2024-06-04 15:28:36,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:36,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:37,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:37,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14031805] [2024-06-04 15:28:37,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14031805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:37,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:37,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:28:37,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825319009] [2024-06-04 15:28:37,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:37,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:28:37,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:37,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:28:37,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:28:37,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:37,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 384 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:37,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:37,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:37,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:37,684 INFO L124 PetriNetUnfolderBase]: 206/388 cut-off events. [2024-06-04 15:28:37,685 INFO L125 PetriNetUnfolderBase]: For 2792/2795 co-relation queries the response was YES. [2024-06-04 15:28:37,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1716 conditions, 388 events. 206/388 cut-off events. For 2792/2795 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1509 event pairs, 44 based on Foata normal form. 3/387 useless extension candidates. Maximal degree in co-relation 1684. Up to 338 conditions per place. [2024-06-04 15:28:37,688 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 48 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-04 15:28:37,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 548 flow [2024-06-04 15:28:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:28:37,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:28:37,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-04 15:28:37,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-04 15:28:37,690 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 384 flow. Second operand 7 states and 87 transitions. [2024-06-04 15:28:37,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 548 flow [2024-06-04 15:28:37,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 487 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-04 15:28:37,694 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 376 flow [2024-06-04 15:28:37,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-06-04 15:28:37,694 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-04 15:28:37,695 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 376 flow [2024-06-04 15:28:37,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:37,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:37,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:37,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:28:37,695 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:37,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:37,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1294312709, now seen corresponding path program 3 times [2024-06-04 15:28:37,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:37,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038572400] [2024-06-04 15:28:37,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:37,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:38,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038572400] [2024-06-04 15:28:38,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038572400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:38,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:38,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:28:38,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314282753] [2024-06-04 15:28:38,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:38,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:28:38,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:38,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:28:38,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:28:38,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:38,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 376 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:38,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:38,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:38,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:38,986 INFO L124 PetriNetUnfolderBase]: 204/385 cut-off events. [2024-06-04 15:28:38,986 INFO L125 PetriNetUnfolderBase]: For 2985/2988 co-relation queries the response was YES. [2024-06-04 15:28:38,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 385 events. 204/385 cut-off events. For 2985/2988 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1503 event pairs, 44 based on Foata normal form. 3/384 useless extension candidates. Maximal degree in co-relation 1673. Up to 326 conditions per place. [2024-06-04 15:28:38,990 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 47 selfloop transitions, 20 changer transitions 0/70 dead transitions. [2024-06-04 15:28:38,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 562 flow [2024-06-04 15:28:38,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:28:38,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:28:38,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-04 15:28:38,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-04 15:28:38,991 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 376 flow. Second operand 7 states and 88 transitions. [2024-06-04 15:28:38,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 562 flow [2024-06-04 15:28:38,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 525 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-04 15:28:38,996 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 427 flow [2024-06-04 15:28:38,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2024-06-04 15:28:38,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-04 15:28:38,997 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 427 flow [2024-06-04 15:28:38,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:38,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:38,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:38,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:28:38,998 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:38,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:38,999 INFO L85 PathProgramCache]: Analyzing trace with hash -390541517, now seen corresponding path program 1 times [2024-06-04 15:28:38,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:38,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570495265] [2024-06-04 15:28:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:38,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:39,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:39,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570495265] [2024-06-04 15:28:39,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570495265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:39,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:39,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:39,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186248596] [2024-06-04 15:28:39,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:39,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:39,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:39,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:39,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:40,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:40,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 427 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:40,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:40,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:40,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:40,391 INFO L124 PetriNetUnfolderBase]: 202/381 cut-off events. [2024-06-04 15:28:40,391 INFO L125 PetriNetUnfolderBase]: For 3322/3322 co-relation queries the response was YES. [2024-06-04 15:28:40,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 381 events. 202/381 cut-off events. For 3322/3322 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1481 event pairs, 40 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1717. Up to 312 conditions per place. [2024-06-04 15:28:40,394 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 18 changer transitions 0/80 dead transitions. [2024-06-04 15:28:40,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 80 transitions, 653 flow [2024-06-04 15:28:40,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:40,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-04 15:28:40,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:28:40,396 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 427 flow. Second operand 8 states and 104 transitions. [2024-06-04 15:28:40,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 80 transitions, 653 flow [2024-06-04 15:28:40,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 623 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-04 15:28:40,401 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 466 flow [2024-06-04 15:28:40,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=466, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-06-04 15:28:40,401 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-04 15:28:40,402 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 466 flow [2024-06-04 15:28:40,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:40,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:40,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:40,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:28:40,403 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:40,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:40,403 INFO L85 PathProgramCache]: Analyzing trace with hash -655222065, now seen corresponding path program 1 times [2024-06-04 15:28:40,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:40,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625966960] [2024-06-04 15:28:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:40,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:41,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:41,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625966960] [2024-06-04 15:28:41,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625966960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:41,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:41,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:41,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760778588] [2024-06-04 15:28:41,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:41,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:41,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:41,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:41,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:41,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:41,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 466 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:41,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:41,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:41,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:41,693 INFO L124 PetriNetUnfolderBase]: 208/391 cut-off events. [2024-06-04 15:28:41,693 INFO L125 PetriNetUnfolderBase]: For 3905/3905 co-relation queries the response was YES. [2024-06-04 15:28:41,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 391 events. 208/391 cut-off events. For 3905/3905 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1535 event pairs, 39 based on Foata normal form. 2/391 useless extension candidates. Maximal degree in co-relation 1841. Up to 316 conditions per place. [2024-06-04 15:28:41,697 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 21 changer transitions 0/81 dead transitions. [2024-06-04 15:28:41,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 688 flow [2024-06-04 15:28:41,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:41,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:41,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-04 15:28:41,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-04 15:28:41,698 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 466 flow. Second operand 8 states and 103 transitions. [2024-06-04 15:28:41,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 688 flow [2024-06-04 15:28:41,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 635 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:41,704 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 492 flow [2024-06-04 15:28:41,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=492, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-06-04 15:28:41,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-04 15:28:41,705 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 492 flow [2024-06-04 15:28:41,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:41,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:41,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:41,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:28:41,706 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:41,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:41,707 INFO L85 PathProgramCache]: Analyzing trace with hash -650580435, now seen corresponding path program 2 times [2024-06-04 15:28:41,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:41,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474726476] [2024-06-04 15:28:41,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:41,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:42,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:42,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474726476] [2024-06-04 15:28:42,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474726476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:42,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:42,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:42,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628392248] [2024-06-04 15:28:42,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:42,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:42,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:42,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:42,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:42,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:42,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 492 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:42,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:42,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:42,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:43,029 INFO L124 PetriNetUnfolderBase]: 214/401 cut-off events. [2024-06-04 15:28:43,030 INFO L125 PetriNetUnfolderBase]: For 4534/4534 co-relation queries the response was YES. [2024-06-04 15:28:43,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 401 events. 214/401 cut-off events. For 4534/4534 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1572 event pairs, 41 based on Foata normal form. 2/401 useless extension candidates. Maximal degree in co-relation 1970. Up to 319 conditions per place. [2024-06-04 15:28:43,033 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 23 changer transitions 0/82 dead transitions. [2024-06-04 15:28:43,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 718 flow [2024-06-04 15:28:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:43,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-04 15:28:43,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-04 15:28:43,035 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 492 flow. Second operand 8 states and 103 transitions. [2024-06-04 15:28:43,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 718 flow [2024-06-04 15:28:43,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 663 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:43,042 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 525 flow [2024-06-04 15:28:43,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2024-06-04 15:28:43,043 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-04 15:28:43,043 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 525 flow [2024-06-04 15:28:43,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:43,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:43,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:43,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:28:43,044 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:43,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:43,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1957835775, now seen corresponding path program 3 times [2024-06-04 15:28:43,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:43,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731282277] [2024-06-04 15:28:43,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:43,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:44,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:44,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731282277] [2024-06-04 15:28:44,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731282277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:44,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:44,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:44,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931100894] [2024-06-04 15:28:44,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:44,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:44,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:44,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:44,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:44,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:44,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 525 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:44,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:44,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:44,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:44,480 INFO L124 PetriNetUnfolderBase]: 217/406 cut-off events. [2024-06-04 15:28:44,481 INFO L125 PetriNetUnfolderBase]: For 5020/5020 co-relation queries the response was YES. [2024-06-04 15:28:44,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2107 conditions, 406 events. 217/406 cut-off events. For 5020/5020 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1605 event pairs, 41 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 2068. Up to 308 conditions per place. [2024-06-04 15:28:44,484 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 29 changer transitions 0/83 dead transitions. [2024-06-04 15:28:44,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 739 flow [2024-06-04 15:28:44,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:44,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:44,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-04 15:28:44,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-04 15:28:44,487 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 525 flow. Second operand 8 states and 103 transitions. [2024-06-04 15:28:44,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 739 flow [2024-06-04 15:28:44,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 673 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:44,500 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 546 flow [2024-06-04 15:28:44,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=546, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-06-04 15:28:44,501 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-04 15:28:44,501 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 546 flow [2024-06-04 15:28:44,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:44,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:44,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:44,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:28:44,502 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:44,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:44,503 INFO L85 PathProgramCache]: Analyzing trace with hash -650573677, now seen corresponding path program 1 times [2024-06-04 15:28:44,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:44,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117224929] [2024-06-04 15:28:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:44,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:45,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:45,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117224929] [2024-06-04 15:28:45,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117224929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:45,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:45,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104669929] [2024-06-04 15:28:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:45,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:45,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:45,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 546 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:45,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:45,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:45,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:45,802 INFO L124 PetriNetUnfolderBase]: 223/416 cut-off events. [2024-06-04 15:28:45,802 INFO L125 PetriNetUnfolderBase]: For 5713/5713 co-relation queries the response was YES. [2024-06-04 15:28:45,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2207 conditions, 416 events. 223/416 cut-off events. For 5713/5713 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1646 event pairs, 38 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 2167. Up to 367 conditions per place. [2024-06-04 15:28:45,806 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2024-06-04 15:28:45,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 764 flow [2024-06-04 15:28:45,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:45,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-04 15:28:45,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-04 15:28:45,807 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 546 flow. Second operand 8 states and 99 transitions. [2024-06-04 15:28:45,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 764 flow [2024-06-04 15:28:45,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 86 transitions, 693 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:45,816 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 530 flow [2024-06-04 15:28:45,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=530, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-04 15:28:45,816 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-04 15:28:45,816 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 530 flow [2024-06-04 15:28:45,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:45,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:45,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:45,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:28:45,817 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:45,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:45,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1460708909, now seen corresponding path program 4 times [2024-06-04 15:28:45,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:45,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544407498] [2024-06-04 15:28:45,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:45,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:46,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:46,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544407498] [2024-06-04 15:28:46,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544407498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:46,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:46,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:46,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079426743] [2024-06-04 15:28:46,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:46,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:46,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:46,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:46,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:46,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:46,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 530 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:46,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:46,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:46,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:47,016 INFO L124 PetriNetUnfolderBase]: 229/427 cut-off events. [2024-06-04 15:28:47,016 INFO L125 PetriNetUnfolderBase]: For 6296/6299 co-relation queries the response was YES. [2024-06-04 15:28:47,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2283 conditions, 427 events. 229/427 cut-off events. For 6296/6299 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1710 event pairs, 46 based on Foata normal form. 2/424 useless extension candidates. Maximal degree in co-relation 2242. Up to 332 conditions per place. [2024-06-04 15:28:47,020 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 27 changer transitions 0/87 dead transitions. [2024-06-04 15:28:47,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 87 transitions, 778 flow [2024-06-04 15:28:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-04 15:28:47,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-04 15:28:47,021 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 530 flow. Second operand 8 states and 102 transitions. [2024-06-04 15:28:47,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 87 transitions, 778 flow [2024-06-04 15:28:47,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 739 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:47,031 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 597 flow [2024-06-04 15:28:47,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=597, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-06-04 15:28:47,031 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-04 15:28:47,031 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 597 flow [2024-06-04 15:28:47,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:47,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:47,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:47,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:28:47,032 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:47,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:47,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1460715667, now seen corresponding path program 2 times [2024-06-04 15:28:47,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:47,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918679935] [2024-06-04 15:28:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:47,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:48,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:48,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918679935] [2024-06-04 15:28:48,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918679935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:48,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:48,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:48,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616568270] [2024-06-04 15:28:48,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:48,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:48,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:48,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:48,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:48,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:48,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 597 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:48,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:48,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:48,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:48,369 INFO L124 PetriNetUnfolderBase]: 235/437 cut-off events. [2024-06-04 15:28:48,370 INFO L125 PetriNetUnfolderBase]: For 7088/7091 co-relation queries the response was YES. [2024-06-04 15:28:48,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2430 conditions, 437 events. 235/437 cut-off events. For 7088/7091 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1746 event pairs, 43 based on Foata normal form. 4/437 useless extension candidates. Maximal degree in co-relation 2388. Up to 381 conditions per place. [2024-06-04 15:28:48,375 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 17 changer transitions 0/89 dead transitions. [2024-06-04 15:28:48,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 819 flow [2024-06-04 15:28:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:48,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-04 15:28:48,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 15:28:48,377 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 597 flow. Second operand 8 states and 98 transitions. [2024-06-04 15:28:48,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 819 flow [2024-06-04 15:28:48,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 735 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:48,389 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 578 flow [2024-06-04 15:28:48,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=578, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-06-04 15:28:48,389 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-04 15:28:48,390 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 578 flow [2024-06-04 15:28:48,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:48,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:48,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:48,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:28:48,390 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:48,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:48,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1469286547, now seen corresponding path program 3 times [2024-06-04 15:28:48,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:48,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451225498] [2024-06-04 15:28:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:48,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:49,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:49,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:49,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451225498] [2024-06-04 15:28:49,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451225498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:49,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:49,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:49,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351754083] [2024-06-04 15:28:49,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:49,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:49,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:49,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:49,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:49,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:49,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 578 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:49,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:49,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:49,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:49,948 INFO L124 PetriNetUnfolderBase]: 238/441 cut-off events. [2024-06-04 15:28:49,949 INFO L125 PetriNetUnfolderBase]: For 7314/7314 co-relation queries the response was YES. [2024-06-04 15:28:49,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 441 events. 238/441 cut-off events. For 7314/7314 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1772 event pairs, 41 based on Foata normal form. 1/440 useless extension candidates. Maximal degree in co-relation 2403. Up to 405 conditions per place. [2024-06-04 15:28:49,953 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 76 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2024-06-04 15:28:49,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 91 transitions, 802 flow [2024-06-04 15:28:49,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 15:28:49,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-04 15:28:49,955 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 578 flow. Second operand 8 states and 95 transitions. [2024-06-04 15:28:49,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 91 transitions, 802 flow [2024-06-04 15:28:49,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 91 transitions, 753 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:49,964 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 595 flow [2024-06-04 15:28:49,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=595, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2024-06-04 15:28:49,965 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-04 15:28:49,965 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 595 flow [2024-06-04 15:28:49,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:49,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:49,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:49,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:28:49,966 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:49,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:49,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1468989629, now seen corresponding path program 5 times [2024-06-04 15:28:49,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:49,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011317244] [2024-06-04 15:28:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:49,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:50,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:50,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011317244] [2024-06-04 15:28:50,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011317244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:50,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:50,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:50,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119423734] [2024-06-04 15:28:50,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:50,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:50,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:50,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:50,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:51,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:51,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 595 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:51,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:51,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:51,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:51,313 INFO L124 PetriNetUnfolderBase]: 241/447 cut-off events. [2024-06-04 15:28:51,313 INFO L125 PetriNetUnfolderBase]: For 7957/7960 co-relation queries the response was YES. [2024-06-04 15:28:51,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 447 events. 241/447 cut-off events. For 7957/7960 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1811 event pairs, 46 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 2464. Up to 314 conditions per place. [2024-06-04 15:28:51,318 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 43 changer transitions 0/97 dead transitions. [2024-06-04 15:28:51,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 97 transitions, 917 flow [2024-06-04 15:28:51,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:51,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-04 15:28:51,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:28:51,320 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 595 flow. Second operand 8 states and 104 transitions. [2024-06-04 15:28:51,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 97 transitions, 917 flow [2024-06-04 15:28:51,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 878 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:51,335 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 733 flow [2024-06-04 15:28:51,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=733, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2024-06-04 15:28:51,336 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-04 15:28:51,336 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 733 flow [2024-06-04 15:28:51,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:51,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:51,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:51,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:28:51,337 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:51,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:51,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1468989877, now seen corresponding path program 4 times [2024-06-04 15:28:51,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:51,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052558722] [2024-06-04 15:28:51,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:51,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:52,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:52,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052558722] [2024-06-04 15:28:52,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052558722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:52,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:52,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:52,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522042742] [2024-06-04 15:28:52,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:52,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:52,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:52,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:52,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:52,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:52,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 87 transitions, 733 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:52,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:52,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:52,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:52,733 INFO L124 PetriNetUnfolderBase]: 239/444 cut-off events. [2024-06-04 15:28:52,733 INFO L125 PetriNetUnfolderBase]: For 8660/8663 co-relation queries the response was YES. [2024-06-04 15:28:52,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 444 events. 239/444 cut-off events. For 8660/8663 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1797 event pairs, 40 based on Foata normal form. 3/443 useless extension candidates. Maximal degree in co-relation 2621. Up to 370 conditions per place. [2024-06-04 15:28:52,738 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 72 selfloop transitions, 26 changer transitions 0/101 dead transitions. [2024-06-04 15:28:52,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 101 transitions, 991 flow [2024-06-04 15:28:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:52,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-04 15:28:52,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:28:52,741 INFO L175 Difference]: Start difference. First operand has 96 places, 87 transitions, 733 flow. Second operand 8 states and 100 transitions. [2024-06-04 15:28:52,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 101 transitions, 991 flow [2024-06-04 15:28:52,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 101 transitions, 931 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:52,755 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 785 flow [2024-06-04 15:28:52,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=785, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2024-06-04 15:28:52,755 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-04 15:28:52,756 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 785 flow [2024-06-04 15:28:52,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:52,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:52,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:52,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:28:52,756 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:52,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1460715419, now seen corresponding path program 6 times [2024-06-04 15:28:52,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:52,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428305175] [2024-06-04 15:28:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:52,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:53,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:53,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428305175] [2024-06-04 15:28:53,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428305175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:53,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:53,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:53,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446583921] [2024-06-04 15:28:53,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:53,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:53,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:53,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:53,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:53,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:53,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 785 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:53,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:53,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:53,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:53,908 INFO L124 PetriNetUnfolderBase]: 237/441 cut-off events. [2024-06-04 15:28:53,909 INFO L125 PetriNetUnfolderBase]: For 8769/8772 co-relation queries the response was YES. [2024-06-04 15:28:53,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 441 events. 237/441 cut-off events. For 8769/8772 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1789 event pairs, 45 based on Foata normal form. 1/437 useless extension candidates. Maximal degree in co-relation 2654. Up to 340 conditions per place. [2024-06-04 15:28:53,913 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 69 selfloop transitions, 30 changer transitions 0/102 dead transitions. [2024-06-04 15:28:53,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 102 transitions, 1035 flow [2024-06-04 15:28:53,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:53,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-04 15:28:53,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:28:53,915 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 785 flow. Second operand 8 states and 104 transitions. [2024-06-04 15:28:53,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 102 transitions, 1035 flow [2024-06-04 15:28:53,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 991 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:53,929 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 806 flow [2024-06-04 15:28:53,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=806, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2024-06-04 15:28:53,930 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-04 15:28:53,930 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 806 flow [2024-06-04 15:28:53,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:53,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:53,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:53,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:28:53,930 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:53,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:53,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1469297459, now seen corresponding path program 1 times [2024-06-04 15:28:53,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:53,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122846370] [2024-06-04 15:28:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:53,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:54,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:54,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122846370] [2024-06-04 15:28:54,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122846370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:54,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:54,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:54,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522768778] [2024-06-04 15:28:54,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:54,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:54,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:54,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:54,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:55,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:28:55,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 806 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:55,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:55,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:28:55,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:55,286 INFO L124 PetriNetUnfolderBase]: 221/420 cut-off events. [2024-06-04 15:28:55,286 INFO L125 PetriNetUnfolderBase]: For 9089/9094 co-relation queries the response was YES. [2024-06-04 15:28:55,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 420 events. 221/420 cut-off events. For 9089/9094 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1705 event pairs, 38 based on Foata normal form. 7/424 useless extension candidates. Maximal degree in co-relation 2536. Up to 344 conditions per place. [2024-06-04 15:28:55,290 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 72 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2024-06-04 15:28:55,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 101 transitions, 996 flow [2024-06-04 15:28:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-04 15:28:55,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-04 15:28:55,291 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 806 flow. Second operand 8 states and 102 transitions. [2024-06-04 15:28:55,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 101 transitions, 996 flow [2024-06-04 15:28:55,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 101 transitions, 881 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:55,306 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 719 flow [2024-06-04 15:28:55,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=719, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2024-06-04 15:28:55,306 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-04 15:28:55,306 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 719 flow [2024-06-04 15:28:55,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:55,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:55,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:55,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:28:55,307 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:55,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:55,308 INFO L85 PathProgramCache]: Analyzing trace with hash -711182526, now seen corresponding path program 1 times [2024-06-04 15:28:55,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:55,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948398309] [2024-06-04 15:28:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:55,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:56,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:56,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948398309] [2024-06-04 15:28:56,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948398309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:56,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:56,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:56,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876993536] [2024-06-04 15:28:56,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:56,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:56,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:56,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:56,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:56,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:56,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 719 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:56,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:56,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:56,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:57,343 INFO L124 PetriNetUnfolderBase]: 237/442 cut-off events. [2024-06-04 15:28:57,344 INFO L125 PetriNetUnfolderBase]: For 9254/9254 co-relation queries the response was YES. [2024-06-04 15:28:57,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2655 conditions, 442 events. 237/442 cut-off events. For 9254/9254 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1779 event pairs, 35 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 2602. Up to 368 conditions per place. [2024-06-04 15:28:57,348 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 20 changer transitions 0/111 dead transitions. [2024-06-04 15:28:57,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 111 transitions, 1019 flow [2024-06-04 15:28:57,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:57,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:57,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 15:28:57,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:28:57,351 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 719 flow. Second operand 9 states and 114 transitions. [2024-06-04 15:28:57,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 111 transitions, 1019 flow [2024-06-04 15:28:57,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 111 transitions, 979 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:57,366 INFO L231 Difference]: Finished difference. Result has 107 places, 94 transitions, 762 flow [2024-06-04 15:28:57,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=762, PETRI_PLACES=107, PETRI_TRANSITIONS=94} [2024-06-04 15:28:57,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-04 15:28:57,366 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 94 transitions, 762 flow [2024-06-04 15:28:57,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:57,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:57,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:57,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:28:57,367 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:57,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:57,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1162954027, now seen corresponding path program 1 times [2024-06-04 15:28:57,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:57,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820372345] [2024-06-04 15:28:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:58,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:58,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820372345] [2024-06-04 15:28:58,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820372345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:58,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:58,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894800995] [2024-06-04 15:28:58,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:58,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:58,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:58,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:58,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:58,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:28:58,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 94 transitions, 762 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:58,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:58,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:28:58,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:58,783 INFO L124 PetriNetUnfolderBase]: 249/462 cut-off events. [2024-06-04 15:28:58,783 INFO L125 PetriNetUnfolderBase]: For 11297/11297 co-relation queries the response was YES. [2024-06-04 15:28:58,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2829 conditions, 462 events. 249/462 cut-off events. For 11297/11297 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1872 event pairs, 34 based on Foata normal form. 4/464 useless extension candidates. Maximal degree in co-relation 2776. Up to 373 conditions per place. [2024-06-04 15:28:58,795 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 24 changer transitions 0/113 dead transitions. [2024-06-04 15:28:58,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 113 transitions, 1086 flow [2024-06-04 15:28:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:58,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:58,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-04 15:28:58,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-04 15:28:58,797 INFO L175 Difference]: Start difference. First operand has 107 places, 94 transitions, 762 flow. Second operand 9 states and 115 transitions. [2024-06-04 15:28:58,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 113 transitions, 1086 flow [2024-06-04 15:28:58,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 113 transitions, 1019 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:58,813 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 799 flow [2024-06-04 15:28:58,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=799, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2024-06-04 15:28:58,815 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-04 15:28:58,816 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 799 flow [2024-06-04 15:28:58,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:58,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:58,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:58,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 15:28:58,816 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:58,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:58,817 INFO L85 PathProgramCache]: Analyzing trace with hash -707457876, now seen corresponding path program 2 times [2024-06-04 15:28:58,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:58,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720773009] [2024-06-04 15:28:58,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:58,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:00,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:00,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720773009] [2024-06-04 15:29:00,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720773009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:00,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:00,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:00,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533607357] [2024-06-04 15:29:00,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:00,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:00,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:00,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:00,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:00,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:00,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 799 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:00,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:00,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:00,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:00,623 INFO L124 PetriNetUnfolderBase]: 252/469 cut-off events. [2024-06-04 15:29:00,624 INFO L125 PetriNetUnfolderBase]: For 11186/11186 co-relation queries the response was YES. [2024-06-04 15:29:00,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 469 events. 252/469 cut-off events. For 11186/11186 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1910 event pairs, 34 based on Foata normal form. 1/468 useless extension candidates. Maximal degree in co-relation 2899. Up to 387 conditions per place. [2024-06-04 15:29:00,628 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 23 changer transitions 0/114 dead transitions. [2024-06-04 15:29:00,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 114 transitions, 1119 flow [2024-06-04 15:29:00,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:00,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 15:29:00,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-04 15:29:00,631 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 799 flow. Second operand 9 states and 113 transitions. [2024-06-04 15:29:00,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 114 transitions, 1119 flow [2024-06-04 15:29:00,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 114 transitions, 1037 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:00,649 INFO L231 Difference]: Finished difference. Result has 111 places, 99 transitions, 812 flow [2024-06-04 15:29:00,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=812, PETRI_PLACES=111, PETRI_TRANSITIONS=99} [2024-06-04 15:29:00,649 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-04 15:29:00,650 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 99 transitions, 812 flow [2024-06-04 15:29:00,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:00,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:00,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:00,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 15:29:00,650 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:00,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash -563365319, now seen corresponding path program 2 times [2024-06-04 15:29:00,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:00,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146788798] [2024-06-04 15:29:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:00,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:01,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:01,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146788798] [2024-06-04 15:29:01,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146788798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:01,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:01,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:01,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234013624] [2024-06-04 15:29:01,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:01,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:01,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:01,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:01,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:01,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 99 transitions, 812 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:01,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:01,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:01,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:01,966 INFO L124 PetriNetUnfolderBase]: 288/527 cut-off events. [2024-06-04 15:29:01,966 INFO L125 PetriNetUnfolderBase]: For 15374/15374 co-relation queries the response was YES. [2024-06-04 15:29:01,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3465 conditions, 527 events. 288/527 cut-off events. For 15374/15374 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2210 event pairs, 38 based on Foata normal form. 2/527 useless extension candidates. Maximal degree in co-relation 3410. Up to 372 conditions per place. [2024-06-04 15:29:01,970 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 39 changer transitions 0/124 dead transitions. [2024-06-04 15:29:01,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 124 transitions, 1347 flow [2024-06-04 15:29:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-04 15:29:01,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-04 15:29:01,971 INFO L175 Difference]: Start difference. First operand has 111 places, 99 transitions, 812 flow. Second operand 9 states and 120 transitions. [2024-06-04 15:29:01,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 124 transitions, 1347 flow [2024-06-04 15:29:01,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 124 transitions, 1268 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:01,992 INFO L231 Difference]: Finished difference. Result has 114 places, 107 transitions, 968 flow [2024-06-04 15:29:01,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=114, PETRI_TRANSITIONS=107} [2024-06-04 15:29:01,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-04 15:29:01,993 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 107 transitions, 968 flow [2024-06-04 15:29:01,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:01,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:01,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:01,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 15:29:01,993 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:01,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash -563365536, now seen corresponding path program 3 times [2024-06-04 15:29:01,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:01,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948712557] [2024-06-04 15:29:01,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:01,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:03,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:03,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948712557] [2024-06-04 15:29:03,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948712557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:03,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:03,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:03,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688543038] [2024-06-04 15:29:03,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:03,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:03,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:03,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:03,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:03,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:03,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 107 transitions, 968 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:03,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:03,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:03,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:03,746 INFO L124 PetriNetUnfolderBase]: 296/544 cut-off events. [2024-06-04 15:29:03,746 INFO L125 PetriNetUnfolderBase]: For 16984/16984 co-relation queries the response was YES. [2024-06-04 15:29:03,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3783 conditions, 544 events. 296/544 cut-off events. For 16984/16984 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2324 event pairs, 38 based on Foata normal form. 1/543 useless extension candidates. Maximal degree in co-relation 3726. Up to 428 conditions per place. [2024-06-04 15:29:03,749 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 87 selfloop transitions, 33 changer transitions 0/123 dead transitions. [2024-06-04 15:29:03,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 1390 flow [2024-06-04 15:29:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:03,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 15:29:03,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:29:03,753 INFO L175 Difference]: Start difference. First operand has 114 places, 107 transitions, 968 flow. Second operand 9 states and 114 transitions. [2024-06-04 15:29:03,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 1390 flow [2024-06-04 15:29:03,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 123 transitions, 1322 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-04 15:29:03,777 INFO L231 Difference]: Finished difference. Result has 119 places, 111 transitions, 1067 flow [2024-06-04 15:29:03,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1067, PETRI_PLACES=119, PETRI_TRANSITIONS=111} [2024-06-04 15:29:03,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-04 15:29:03,778 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 111 transitions, 1067 flow [2024-06-04 15:29:03,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:03,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:03,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:03,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 15:29:03,779 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:03,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:03,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1307053807, now seen corresponding path program 3 times [2024-06-04 15:29:03,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:03,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569059603] [2024-06-04 15:29:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:03,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:04,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:04,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569059603] [2024-06-04 15:29:04,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569059603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:04,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:04,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:04,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781722779] [2024-06-04 15:29:04,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:04,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:04,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:04,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:04,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:04,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:04,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 111 transitions, 1067 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:04,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:04,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:04,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:05,122 INFO L124 PetriNetUnfolderBase]: 292/538 cut-off events. [2024-06-04 15:29:05,123 INFO L125 PetriNetUnfolderBase]: For 17316/17316 co-relation queries the response was YES. [2024-06-04 15:29:05,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3693 conditions, 538 events. 292/538 cut-off events. For 17316/17316 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2302 event pairs, 38 based on Foata normal form. 2/538 useless extension candidates. Maximal degree in co-relation 3635. Up to 382 conditions per place. [2024-06-04 15:29:05,128 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 41 changer transitions 0/126 dead transitions. [2024-06-04 15:29:05,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 1420 flow [2024-06-04 15:29:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:05,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-04 15:29:05,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-04 15:29:05,129 INFO L175 Difference]: Start difference. First operand has 119 places, 111 transitions, 1067 flow. Second operand 9 states and 118 transitions. [2024-06-04 15:29:05,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 1420 flow [2024-06-04 15:29:05,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 126 transitions, 1331 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-04 15:29:05,156 INFO L231 Difference]: Finished difference. Result has 123 places, 111 transitions, 1066 flow [2024-06-04 15:29:05,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1066, PETRI_PLACES=123, PETRI_TRANSITIONS=111} [2024-06-04 15:29:05,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-04 15:29:05,157 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 111 transitions, 1066 flow [2024-06-04 15:29:05,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:05,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:05,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:05,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 15:29:05,158 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:05,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:05,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1306844557, now seen corresponding path program 4 times [2024-06-04 15:29:05,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:05,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461694988] [2024-06-04 15:29:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:05,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:06,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:06,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461694988] [2024-06-04 15:29:06,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461694988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:06,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:06,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:06,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493525250] [2024-06-04 15:29:06,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:06,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:06,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:06,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:06,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:06,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:06,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 111 transitions, 1066 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:06,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:06,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:06,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:06,500 INFO L124 PetriNetUnfolderBase]: 284/526 cut-off events. [2024-06-04 15:29:06,500 INFO L125 PetriNetUnfolderBase]: For 17041/17041 co-relation queries the response was YES. [2024-06-04 15:29:06,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3545 conditions, 526 events. 284/526 cut-off events. For 17041/17041 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2237 event pairs, 36 based on Foata normal form. 4/528 useless extension candidates. Maximal degree in co-relation 3485. Up to 424 conditions per place. [2024-06-04 15:29:06,505 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 26 changer transitions 0/124 dead transitions. [2024-06-04 15:29:06,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 124 transitions, 1344 flow [2024-06-04 15:29:06,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:06,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-04 15:29:06,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-04 15:29:06,506 INFO L175 Difference]: Start difference. First operand has 123 places, 111 transitions, 1066 flow. Second operand 9 states and 115 transitions. [2024-06-04 15:29:06,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 124 transitions, 1344 flow [2024-06-04 15:29:06,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 124 transitions, 1234 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:06,537 INFO L231 Difference]: Finished difference. Result has 125 places, 111 transitions, 1014 flow [2024-06-04 15:29:06,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1014, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2024-06-04 15:29:06,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-04 15:29:06,538 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 1014 flow [2024-06-04 15:29:06,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:06,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:06,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:06,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 15:29:06,539 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:06,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:06,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1306844340, now seen corresponding path program 4 times [2024-06-04 15:29:06,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:06,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989482598] [2024-06-04 15:29:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:06,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:07,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:07,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989482598] [2024-06-04 15:29:07,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989482598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:07,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:07,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:07,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429961816] [2024-06-04 15:29:07,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:07,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:07,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:07,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:07,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:07,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:07,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 1014 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:07,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:07,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:07,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:08,088 INFO L124 PetriNetUnfolderBase]: 282/523 cut-off events. [2024-06-04 15:29:08,089 INFO L125 PetriNetUnfolderBase]: For 15327/15327 co-relation queries the response was YES. [2024-06-04 15:29:08,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3409 conditions, 523 events. 282/523 cut-off events. For 15327/15327 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2222 event pairs, 36 based on Foata normal form. 1/522 useless extension candidates. Maximal degree in co-relation 3348. Up to 430 conditions per place. [2024-06-04 15:29:08,093 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 95 selfloop transitions, 25 changer transitions 0/123 dead transitions. [2024-06-04 15:29:08,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 123 transitions, 1286 flow [2024-06-04 15:29:08,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 15:29:08,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-04 15:29:08,095 INFO L175 Difference]: Start difference. First operand has 125 places, 111 transitions, 1014 flow. Second operand 9 states and 113 transitions. [2024-06-04 15:29:08,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 123 transitions, 1286 flow [2024-06-04 15:29:08,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 123 transitions, 1173 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:08,125 INFO L231 Difference]: Finished difference. Result has 125 places, 111 transitions, 956 flow [2024-06-04 15:29:08,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=956, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2024-06-04 15:29:08,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-04 15:29:08,126 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 956 flow [2024-06-04 15:29:08,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:08,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:08,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:08,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 15:29:08,126 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:08,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:08,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1615965538, now seen corresponding path program 5 times [2024-06-04 15:29:08,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:08,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412666129] [2024-06-04 15:29:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:08,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:09,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:09,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412666129] [2024-06-04 15:29:09,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412666129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:09,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:09,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:09,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571780845] [2024-06-04 15:29:09,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:09,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:09,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:09,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:09,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:09,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:09,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 956 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:09,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:09,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:09,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:09,769 INFO L124 PetriNetUnfolderBase]: 290/541 cut-off events. [2024-06-04 15:29:09,769 INFO L125 PetriNetUnfolderBase]: For 16904/16907 co-relation queries the response was YES. [2024-06-04 15:29:09,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3548 conditions, 541 events. 290/541 cut-off events. For 16904/16907 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2350 event pairs, 42 based on Foata normal form. 1/537 useless extension candidates. Maximal degree in co-relation 3486. Up to 421 conditions per place. [2024-06-04 15:29:09,772 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 90 selfloop transitions, 33 changer transitions 0/126 dead transitions. [2024-06-04 15:29:09,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 126 transitions, 1412 flow [2024-06-04 15:29:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-04 15:29:09,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-04 15:29:09,774 INFO L175 Difference]: Start difference. First operand has 125 places, 111 transitions, 956 flow. Second operand 9 states and 115 transitions. [2024-06-04 15:29:09,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 126 transitions, 1412 flow [2024-06-04 15:29:09,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 126 transitions, 1333 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:09,804 INFO L231 Difference]: Finished difference. Result has 126 places, 115 transitions, 1052 flow [2024-06-04 15:29:09,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1052, PETRI_PLACES=126, PETRI_TRANSITIONS=115} [2024-06-04 15:29:09,804 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-04 15:29:09,804 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 115 transitions, 1052 flow [2024-06-04 15:29:09,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:09,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:09,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:09,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 15:29:09,805 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:09,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash 488853975, now seen corresponding path program 5 times [2024-06-04 15:29:09,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:09,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912623036] [2024-06-04 15:29:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:09,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:10,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:10,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912623036] [2024-06-04 15:29:10,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912623036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:10,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:10,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:10,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682519828] [2024-06-04 15:29:10,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:10,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:10,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:10,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:10,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:10,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:10,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 115 transitions, 1052 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:10,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:10,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:10,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:11,142 INFO L124 PetriNetUnfolderBase]: 326/599 cut-off events. [2024-06-04 15:29:11,143 INFO L125 PetriNetUnfolderBase]: For 22772/22775 co-relation queries the response was YES. [2024-06-04 15:29:11,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4193 conditions, 599 events. 326/599 cut-off events. For 22772/22775 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2652 event pairs, 44 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 4130. Up to 445 conditions per place. [2024-06-04 15:29:11,148 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 38 changer transitions 0/138 dead transitions. [2024-06-04 15:29:11,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 138 transitions, 1645 flow [2024-06-04 15:29:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:11,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-04 15:29:11,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-04 15:29:11,150 INFO L175 Difference]: Start difference. First operand has 126 places, 115 transitions, 1052 flow. Second operand 9 states and 121 transitions. [2024-06-04 15:29:11,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 138 transitions, 1645 flow [2024-06-04 15:29:11,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 138 transitions, 1559 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-04 15:29:11,189 INFO L231 Difference]: Finished difference. Result has 131 places, 123 transitions, 1204 flow [2024-06-04 15:29:11,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1204, PETRI_PLACES=131, PETRI_TRANSITIONS=123} [2024-06-04 15:29:11,190 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-04 15:29:11,190 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 123 transitions, 1204 flow [2024-06-04 15:29:11,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:11,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:11,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:11,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 15:29:11,191 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:11,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1962662732, now seen corresponding path program 6 times [2024-06-04 15:29:11,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:11,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549393745] [2024-06-04 15:29:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:11,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:12,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:12,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549393745] [2024-06-04 15:29:12,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549393745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:12,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:12,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:12,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025540562] [2024-06-04 15:29:12,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:12,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:12,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:12,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:12,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:12,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:12,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 123 transitions, 1204 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:12,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:12,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:12,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:12,994 INFO L124 PetriNetUnfolderBase]: 324/596 cut-off events. [2024-06-04 15:29:12,994 INFO L125 PetriNetUnfolderBase]: For 22722/22725 co-relation queries the response was YES. [2024-06-04 15:29:12,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4276 conditions, 596 events. 324/596 cut-off events. For 22722/22725 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2643 event pairs, 44 based on Foata normal form. 1/592 useless extension candidates. Maximal degree in co-relation 4210. Up to 486 conditions per place. [2024-06-04 15:29:12,998 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 29 changer transitions 0/132 dead transitions. [2024-06-04 15:29:12,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 132 transitions, 1484 flow [2024-06-04 15:29:12,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:13,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-04 15:29:13,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 15:29:13,000 INFO L175 Difference]: Start difference. First operand has 131 places, 123 transitions, 1204 flow. Second operand 9 states and 112 transitions. [2024-06-04 15:29:13,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 132 transitions, 1484 flow [2024-06-04 15:29:13,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 132 transitions, 1371 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-04 15:29:13,040 INFO L231 Difference]: Finished difference. Result has 137 places, 123 transitions, 1154 flow [2024-06-04 15:29:13,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1154, PETRI_PLACES=137, PETRI_TRANSITIONS=123} [2024-06-04 15:29:13,040 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-04 15:29:13,041 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 123 transitions, 1154 flow [2024-06-04 15:29:13,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:13,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:13,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:13,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 15:29:13,041 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:13,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:13,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1705952476, now seen corresponding path program 1 times [2024-06-04 15:29:13,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:13,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850259334] [2024-06-04 15:29:13,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:13,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:14,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:14,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850259334] [2024-06-04 15:29:14,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850259334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:14,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:14,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:14,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795881306] [2024-06-04 15:29:14,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:14,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:14,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:14,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:14,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:14,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:14,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 123 transitions, 1154 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:14,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:14,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:14,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:14,703 INFO L124 PetriNetUnfolderBase]: 327/601 cut-off events. [2024-06-04 15:29:14,703 INFO L125 PetriNetUnfolderBase]: For 23263/23266 co-relation queries the response was YES. [2024-06-04 15:29:14,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4288 conditions, 601 events. 327/601 cut-off events. For 23263/23266 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2668 event pairs, 38 based on Foata normal form. 3/600 useless extension candidates. Maximal degree in co-relation 4220. Up to 512 conditions per place. [2024-06-04 15:29:14,706 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 28 changer transitions 0/135 dead transitions. [2024-06-04 15:29:14,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 135 transitions, 1482 flow [2024-06-04 15:29:14,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:14,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 15:29:14,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 15:29:14,707 INFO L175 Difference]: Start difference. First operand has 137 places, 123 transitions, 1154 flow. Second operand 9 states and 110 transitions. [2024-06-04 15:29:14,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 135 transitions, 1482 flow [2024-06-04 15:29:14,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 135 transitions, 1411 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:14,738 INFO L231 Difference]: Finished difference. Result has 138 places, 125 transitions, 1184 flow [2024-06-04 15:29:14,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1184, PETRI_PLACES=138, PETRI_TRANSITIONS=125} [2024-06-04 15:29:14,738 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2024-06-04 15:29:14,738 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 125 transitions, 1184 flow [2024-06-04 15:29:14,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:14,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:14,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:14,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 15:29:14,739 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:14,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:14,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1705952755, now seen corresponding path program 6 times [2024-06-04 15:29:14,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:14,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178913180] [2024-06-04 15:29:14,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:14,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:15,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:15,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178913180] [2024-06-04 15:29:15,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178913180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:15,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:15,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:15,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323715345] [2024-06-04 15:29:15,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:15,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:15,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:15,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:15,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:15,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:15,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 125 transitions, 1184 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:15,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:15,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:15,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:15,969 INFO L124 PetriNetUnfolderBase]: 343/627 cut-off events. [2024-06-04 15:29:15,970 INFO L125 PetriNetUnfolderBase]: For 26708/26711 co-relation queries the response was YES. [2024-06-04 15:29:15,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4582 conditions, 627 events. 343/627 cut-off events. For 26708/26711 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2812 event pairs, 45 based on Foata normal form. 2/624 useless extension candidates. Maximal degree in co-relation 4513. Up to 348 conditions per place. [2024-06-04 15:29:15,974 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 80 selfloop transitions, 65 changer transitions 0/148 dead transitions. [2024-06-04 15:29:15,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 148 transitions, 1878 flow [2024-06-04 15:29:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-04 15:29:15,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-04 15:29:15,982 INFO L175 Difference]: Start difference. First operand has 138 places, 125 transitions, 1184 flow. Second operand 9 states and 124 transitions. [2024-06-04 15:29:15,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 148 transitions, 1878 flow [2024-06-04 15:29:16,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 148 transitions, 1793 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:16,029 INFO L231 Difference]: Finished difference. Result has 140 places, 131 transitions, 1347 flow [2024-06-04 15:29:16,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1347, PETRI_PLACES=140, PETRI_TRANSITIONS=131} [2024-06-04 15:29:16,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-04 15:29:16,030 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 131 transitions, 1347 flow [2024-06-04 15:29:16,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:16,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:16,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:16,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 15:29:16,031 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:16,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1962453265, now seen corresponding path program 7 times [2024-06-04 15:29:16,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:16,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980040753] [2024-06-04 15:29:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:16,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:16,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:16,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980040753] [2024-06-04 15:29:16,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980040753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:16,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:16,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:16,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263111967] [2024-06-04 15:29:16,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:16,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:16,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:17,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:17,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 131 transitions, 1347 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:17,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:17,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:17,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:17,278 INFO L124 PetriNetUnfolderBase]: 339/621 cut-off events. [2024-06-04 15:29:17,278 INFO L125 PetriNetUnfolderBase]: For 27682/27685 co-relation queries the response was YES. [2024-06-04 15:29:17,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4622 conditions, 621 events. 339/621 cut-off events. For 27682/27685 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2769 event pairs, 45 based on Foata normal form. 2/618 useless extension candidates. Maximal degree in co-relation 4552. Up to 470 conditions per place. [2024-06-04 15:29:17,281 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 102 selfloop transitions, 39 changer transitions 0/144 dead transitions. [2024-06-04 15:29:17,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 144 transitions, 1746 flow [2024-06-04 15:29:17,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:17,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-04 15:29:17,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-04 15:29:17,283 INFO L175 Difference]: Start difference. First operand has 140 places, 131 transitions, 1347 flow. Second operand 9 states and 119 transitions. [2024-06-04 15:29:17,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 144 transitions, 1746 flow [2024-06-04 15:29:17,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 144 transitions, 1549 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-04 15:29:17,317 INFO L231 Difference]: Finished difference. Result has 143 places, 131 transitions, 1234 flow [2024-06-04 15:29:17,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=143, PETRI_TRANSITIONS=131} [2024-06-04 15:29:17,317 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-04 15:29:17,317 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 131 transitions, 1234 flow [2024-06-04 15:29:17,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:17,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:17,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:17,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 15:29:17,318 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:17,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:17,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1962662515, now seen corresponding path program 8 times [2024-06-04 15:29:17,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:17,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566045438] [2024-06-04 15:29:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:17,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:18,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:18,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566045438] [2024-06-04 15:29:18,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566045438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:18,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:18,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:18,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773960453] [2024-06-04 15:29:18,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:18,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:18,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:18,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:18,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:18,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:18,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 131 transitions, 1234 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:18,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:18,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:18,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:18,492 INFO L124 PetriNetUnfolderBase]: 331/609 cut-off events. [2024-06-04 15:29:18,493 INFO L125 PetriNetUnfolderBase]: For 26343/26346 co-relation queries the response was YES. [2024-06-04 15:29:18,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4167 conditions, 609 events. 331/609 cut-off events. For 26343/26346 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2734 event pairs, 43 based on Foata normal form. 4/608 useless extension candidates. Maximal degree in co-relation 4097. Up to 490 conditions per place. [2024-06-04 15:29:18,497 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 108 selfloop transitions, 30 changer transitions 0/141 dead transitions. [2024-06-04 15:29:18,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 141 transitions, 1536 flow [2024-06-04 15:29:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:18,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:18,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 15:29:18,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:29:18,501 INFO L175 Difference]: Start difference. First operand has 143 places, 131 transitions, 1234 flow. Second operand 9 states and 114 transitions. [2024-06-04 15:29:18,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 141 transitions, 1536 flow [2024-06-04 15:29:18,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 141 transitions, 1396 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:18,542 INFO L231 Difference]: Finished difference. Result has 144 places, 131 transitions, 1160 flow [2024-06-04 15:29:18,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1160, PETRI_PLACES=144, PETRI_TRANSITIONS=131} [2024-06-04 15:29:18,543 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-04 15:29:18,543 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 131 transitions, 1160 flow [2024-06-04 15:29:18,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:18,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:18,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:18,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 15:29:18,544 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:18,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:18,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1705960412, now seen corresponding path program 7 times [2024-06-04 15:29:18,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:18,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94002663] [2024-06-04 15:29:18,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:18,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:19,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:19,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:19,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94002663] [2024-06-04 15:29:19,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94002663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:19,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:19,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:19,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750495324] [2024-06-04 15:29:19,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:19,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:19,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:19,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:19,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:19,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:19,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 131 transitions, 1160 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:19,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:19,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:19,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:20,204 INFO L124 PetriNetUnfolderBase]: 329/606 cut-off events. [2024-06-04 15:29:20,205 INFO L125 PetriNetUnfolderBase]: For 23574/23577 co-relation queries the response was YES. [2024-06-04 15:29:20,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3984 conditions, 606 events. 329/606 cut-off events. For 23574/23577 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2712 event pairs, 43 based on Foata normal form. 1/602 useless extension candidates. Maximal degree in co-relation 3914. Up to 444 conditions per place. [2024-06-04 15:29:20,208 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 89 selfloop transitions, 50 changer transitions 0/142 dead transitions. [2024-06-04 15:29:20,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 142 transitions, 1516 flow [2024-06-04 15:29:20,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:20,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:20,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 15:29:20,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-04 15:29:20,209 INFO L175 Difference]: Start difference. First operand has 144 places, 131 transitions, 1160 flow. Second operand 9 states and 113 transitions. [2024-06-04 15:29:20,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 142 transitions, 1516 flow [2024-06-04 15:29:20,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 142 transitions, 1436 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:20,239 INFO L231 Difference]: Finished difference. Result has 144 places, 133 transitions, 1245 flow [2024-06-04 15:29:20,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1245, PETRI_PLACES=144, PETRI_TRANSITIONS=133} [2024-06-04 15:29:20,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-04 15:29:20,239 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 133 transitions, 1245 flow [2024-06-04 15:29:20,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:20,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:20,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:20,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 15:29:20,240 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:20,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:20,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1705960195, now seen corresponding path program 9 times [2024-06-04 15:29:20,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:20,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297431950] [2024-06-04 15:29:20,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:20,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:21,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:21,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297431950] [2024-06-04 15:29:21,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297431950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:21,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:21,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:21,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454974116] [2024-06-04 15:29:21,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:21,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:21,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:21,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:21,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:21,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:21,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 1245 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:21,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:21,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:21,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:21,411 INFO L124 PetriNetUnfolderBase]: 325/600 cut-off events. [2024-06-04 15:29:21,411 INFO L125 PetriNetUnfolderBase]: For 23886/23889 co-relation queries the response was YES. [2024-06-04 15:29:21,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3939 conditions, 600 events. 325/600 cut-off events. For 23886/23889 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2680 event pairs, 42 based on Foata normal form. 2/597 useless extension candidates. Maximal degree in co-relation 3868. Up to 333 conditions per place. [2024-06-04 15:29:21,414 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 78 selfloop transitions, 68 changer transitions 0/149 dead transitions. [2024-06-04 15:29:21,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 149 transitions, 1781 flow [2024-06-04 15:29:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-04 15:29:21,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-04 15:29:21,415 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 1245 flow. Second operand 9 states and 122 transitions. [2024-06-04 15:29:21,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 149 transitions, 1781 flow [2024-06-04 15:29:21,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 149 transitions, 1612 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:21,446 INFO L231 Difference]: Finished difference. Result has 147 places, 135 transitions, 1267 flow [2024-06-04 15:29:21,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1267, PETRI_PLACES=147, PETRI_TRANSITIONS=135} [2024-06-04 15:29:21,446 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-04 15:29:21,446 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 135 transitions, 1267 flow [2024-06-04 15:29:21,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:21,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:21,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:21,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 15:29:21,447 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:21,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:21,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1696755985, now seen corresponding path program 10 times [2024-06-04 15:29:21,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:21,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025616679] [2024-06-04 15:29:21,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:21,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:22,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:22,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025616679] [2024-06-04 15:29:22,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025616679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:22,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:22,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:22,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823120806] [2024-06-04 15:29:22,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:22,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:22,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:22,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:22,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:22,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:22,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 135 transitions, 1267 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:22,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:22,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:22,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:22,634 INFO L124 PetriNetUnfolderBase]: 322/595 cut-off events. [2024-06-04 15:29:22,634 INFO L125 PetriNetUnfolderBase]: For 22774/22774 co-relation queries the response was YES. [2024-06-04 15:29:22,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3873 conditions, 595 events. 322/595 cut-off events. For 22774/22774 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2644 event pairs, 37 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 3800. Up to 529 conditions per place. [2024-06-04 15:29:22,637 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 127 selfloop transitions, 16 changer transitions 0/146 dead transitions. [2024-06-04 15:29:22,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 146 transitions, 1667 flow [2024-06-04 15:29:22,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:22,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:22,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 15:29:22,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-04 15:29:22,638 INFO L175 Difference]: Start difference. First operand has 147 places, 135 transitions, 1267 flow. Second operand 9 states and 109 transitions. [2024-06-04 15:29:22,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 146 transitions, 1667 flow [2024-06-04 15:29:22,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 146 transitions, 1526 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-04 15:29:22,675 INFO L231 Difference]: Finished difference. Result has 150 places, 135 transitions, 1164 flow [2024-06-04 15:29:22,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1164, PETRI_PLACES=150, PETRI_TRANSITIONS=135} [2024-06-04 15:29:22,676 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-04 15:29:22,676 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 135 transitions, 1164 flow [2024-06-04 15:29:22,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:22,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:22,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:22,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 15:29:22,677 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:22,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:22,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1705693006, now seen corresponding path program 2 times [2024-06-04 15:29:22,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:22,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703624609] [2024-06-04 15:29:22,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:22,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:24,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:24,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:24,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703624609] [2024-06-04 15:29:24,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703624609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:24,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:24,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:24,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183709257] [2024-06-04 15:29:24,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:24,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:24,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:24,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:24,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:24,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:24,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 135 transitions, 1164 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:24,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:24,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:24,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:24,440 INFO L124 PetriNetUnfolderBase]: 325/600 cut-off events. [2024-06-04 15:29:24,440 INFO L125 PetriNetUnfolderBase]: For 22589/22589 co-relation queries the response was YES. [2024-06-04 15:29:24,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3786 conditions, 600 events. 325/600 cut-off events. For 22589/22589 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2681 event pairs, 37 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 3712. Up to 549 conditions per place. [2024-06-04 15:29:24,443 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 129 selfloop transitions, 14 changer transitions 0/146 dead transitions. [2024-06-04 15:29:24,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 146 transitions, 1520 flow [2024-06-04 15:29:24,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:24,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:24,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 15:29:24,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 15:29:24,445 INFO L175 Difference]: Start difference. First operand has 150 places, 135 transitions, 1164 flow. Second operand 9 states and 105 transitions. [2024-06-04 15:29:24,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 146 transitions, 1520 flow [2024-06-04 15:29:24,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 146 transitions, 1460 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:24,485 INFO L231 Difference]: Finished difference. Result has 150 places, 137 transitions, 1189 flow [2024-06-04 15:29:24,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1189, PETRI_PLACES=150, PETRI_TRANSITIONS=137} [2024-06-04 15:29:24,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-04 15:29:24,485 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 137 transitions, 1189 flow [2024-06-04 15:29:24,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:24,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:24,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:24,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 15:29:24,486 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:24,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:24,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1696429276, now seen corresponding path program 3 times [2024-06-04 15:29:24,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:24,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690453136] [2024-06-04 15:29:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:24,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:25,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:25,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690453136] [2024-06-04 15:29:25,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690453136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:25,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:25,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:25,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766898537] [2024-06-04 15:29:25,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:25,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:25,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:25,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:25,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:25,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:25,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 137 transitions, 1189 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:25,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:25,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:25,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:26,148 INFO L124 PetriNetUnfolderBase]: 322/595 cut-off events. [2024-06-04 15:29:26,148 INFO L125 PetriNetUnfolderBase]: For 22450/22450 co-relation queries the response was YES. [2024-06-04 15:29:26,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3704 conditions, 595 events. 322/595 cut-off events. For 22450/22450 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2643 event pairs, 37 based on Foata normal form. 1/594 useless extension candidates. Maximal degree in co-relation 3629. Up to 538 conditions per place. [2024-06-04 15:29:26,152 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 126 selfloop transitions, 18 changer transitions 0/147 dead transitions. [2024-06-04 15:29:26,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 147 transitions, 1501 flow [2024-06-04 15:29:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:26,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 15:29:26,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 15:29:26,153 INFO L175 Difference]: Start difference. First operand has 150 places, 137 transitions, 1189 flow. Second operand 10 states and 116 transitions. [2024-06-04 15:29:26,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 147 transitions, 1501 flow [2024-06-04 15:29:26,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 147 transitions, 1414 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:26,188 INFO L231 Difference]: Finished difference. Result has 153 places, 137 transitions, 1143 flow [2024-06-04 15:29:26,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1143, PETRI_PLACES=153, PETRI_TRANSITIONS=137} [2024-06-04 15:29:26,188 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-04 15:29:26,189 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 137 transitions, 1143 flow [2024-06-04 15:29:26,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:26,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:26,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:26,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 15:29:26,189 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:26,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:26,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1573505234, now seen corresponding path program 1 times [2024-06-04 15:29:26,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:26,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363519135] [2024-06-04 15:29:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:26,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:27,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:27,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:27,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363519135] [2024-06-04 15:29:27,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363519135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:27,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:27,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:27,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23472145] [2024-06-04 15:29:27,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:27,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:27,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:27,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:27,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:27,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:27,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 137 transitions, 1143 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:27,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:27,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:27,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:27,426 INFO L124 PetriNetUnfolderBase]: 326/603 cut-off events. [2024-06-04 15:29:27,426 INFO L125 PetriNetUnfolderBase]: For 24182/24182 co-relation queries the response was YES. [2024-06-04 15:29:27,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3721 conditions, 603 events. 326/603 cut-off events. For 24182/24182 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2716 event pairs, 14 based on Foata normal form. 2/603 useless extension candidates. Maximal degree in co-relation 3645. Up to 499 conditions per place. [2024-06-04 15:29:27,430 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 136 selfloop transitions, 18 changer transitions 0/157 dead transitions. [2024-06-04 15:29:27,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 157 transitions, 1521 flow [2024-06-04 15:29:27,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:27,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:27,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 15:29:27,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-04 15:29:27,433 INFO L175 Difference]: Start difference. First operand has 153 places, 137 transitions, 1143 flow. Second operand 9 states and 113 transitions. [2024-06-04 15:29:27,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 157 transitions, 1521 flow [2024-06-04 15:29:27,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 157 transitions, 1476 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:27,472 INFO L231 Difference]: Finished difference. Result has 153 places, 138 transitions, 1156 flow [2024-06-04 15:29:27,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1156, PETRI_PLACES=153, PETRI_TRANSITIONS=138} [2024-06-04 15:29:27,472 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-04 15:29:27,473 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 138 transitions, 1156 flow [2024-06-04 15:29:27,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:27,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:27,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:27,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 15:29:27,473 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:27,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:27,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1576362194, now seen corresponding path program 2 times [2024-06-04 15:29:27,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:27,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230167744] [2024-06-04 15:29:27,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:27,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:28,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:28,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230167744] [2024-06-04 15:29:28,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230167744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:28,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:28,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:28,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091922502] [2024-06-04 15:29:28,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:28,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:28,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:28,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:28,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:28,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:28,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 138 transitions, 1156 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:28,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:28,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:28,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:28,643 INFO L124 PetriNetUnfolderBase]: 330/611 cut-off events. [2024-06-04 15:29:28,643 INFO L125 PetriNetUnfolderBase]: For 25338/25338 co-relation queries the response was YES. [2024-06-04 15:29:28,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3805 conditions, 611 events. 330/611 cut-off events. For 25338/25338 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2769 event pairs, 31 based on Foata normal form. 2/611 useless extension candidates. Maximal degree in co-relation 3729. Up to 524 conditions per place. [2024-06-04 15:29:28,647 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 135 selfloop transitions, 19 changer transitions 0/157 dead transitions. [2024-06-04 15:29:28,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 157 transitions, 1534 flow [2024-06-04 15:29:28,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:28,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:28,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 15:29:28,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:29:28,648 INFO L175 Difference]: Start difference. First operand has 153 places, 138 transitions, 1156 flow. Second operand 9 states and 114 transitions. [2024-06-04 15:29:28,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 157 transitions, 1534 flow [2024-06-04 15:29:28,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 157 transitions, 1486 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:28,693 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 1170 flow [2024-06-04 15:29:28,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1170, PETRI_PLACES=155, PETRI_TRANSITIONS=139} [2024-06-04 15:29:28,693 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-04 15:29:28,693 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 1170 flow [2024-06-04 15:29:28,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:28,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:28,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:28,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 15:29:28,694 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:28,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1297872862, now seen corresponding path program 1 times [2024-06-04 15:29:28,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:28,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895175582] [2024-06-04 15:29:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:28,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:29,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:29,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895175582] [2024-06-04 15:29:29,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895175582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:29,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:29,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:29,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128468676] [2024-06-04 15:29:29,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:29,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:29,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:29,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:29,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:29,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:29,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 139 transitions, 1170 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:29,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:29,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:29,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:30,087 INFO L124 PetriNetUnfolderBase]: 336/623 cut-off events. [2024-06-04 15:29:30,087 INFO L125 PetriNetUnfolderBase]: For 27260/27260 co-relation queries the response was YES. [2024-06-04 15:29:30,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3912 conditions, 623 events. 336/623 cut-off events. For 27260/27260 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2839 event pairs, 32 based on Foata normal form. 2/623 useless extension candidates. Maximal degree in co-relation 3835. Up to 531 conditions per place. [2024-06-04 15:29:30,090 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 135 selfloop transitions, 22 changer transitions 0/160 dead transitions. [2024-06-04 15:29:30,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 160 transitions, 1588 flow [2024-06-04 15:29:30,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:30,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 15:29:30,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:29:30,091 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 1170 flow. Second operand 10 states and 125 transitions. [2024-06-04 15:29:30,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 160 transitions, 1588 flow [2024-06-04 15:29:30,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 160 transitions, 1536 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:30,133 INFO L231 Difference]: Finished difference. Result has 158 places, 141 transitions, 1219 flow [2024-06-04 15:29:30,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1219, PETRI_PLACES=158, PETRI_TRANSITIONS=141} [2024-06-04 15:29:30,134 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-04 15:29:30,134 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 141 transitions, 1219 flow [2024-06-04 15:29:30,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:30,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:30,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:30,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 15:29:30,134 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:30,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:30,135 INFO L85 PathProgramCache]: Analyzing trace with hash -849085760, now seen corresponding path program 3 times [2024-06-04 15:29:30,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:30,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141784092] [2024-06-04 15:29:30,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:30,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:30,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:30,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141784092] [2024-06-04 15:29:30,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141784092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:30,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:30,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:30,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520755098] [2024-06-04 15:29:30,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:30,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:30,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:30,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:30,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:31,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:31,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 141 transitions, 1219 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:31,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:31,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:31,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:31,315 INFO L124 PetriNetUnfolderBase]: 340/631 cut-off events. [2024-06-04 15:29:31,316 INFO L125 PetriNetUnfolderBase]: For 28380/28380 co-relation queries the response was YES. [2024-06-04 15:29:31,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3988 conditions, 631 events. 340/631 cut-off events. For 28380/28380 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2906 event pairs, 32 based on Foata normal form. 2/631 useless extension candidates. Maximal degree in co-relation 3910. Up to 544 conditions per place. [2024-06-04 15:29:31,319 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 135 selfloop transitions, 22 changer transitions 0/160 dead transitions. [2024-06-04 15:29:31,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 160 transitions, 1621 flow [2024-06-04 15:29:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-04 15:29:31,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 15:29:31,320 INFO L175 Difference]: Start difference. First operand has 158 places, 141 transitions, 1219 flow. Second operand 9 states and 111 transitions. [2024-06-04 15:29:31,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 160 transitions, 1621 flow [2024-06-04 15:29:31,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 160 transitions, 1536 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:31,362 INFO L231 Difference]: Finished difference. Result has 160 places, 145 transitions, 1239 flow [2024-06-04 15:29:31,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1239, PETRI_PLACES=160, PETRI_TRANSITIONS=145} [2024-06-04 15:29:31,362 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-04 15:29:31,362 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 145 transitions, 1239 flow [2024-06-04 15:29:31,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:31,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:31,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:31,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 15:29:31,363 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:31,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:31,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1691837814, now seen corresponding path program 2 times [2024-06-04 15:29:31,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:31,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644835665] [2024-06-04 15:29:31,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:31,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:32,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:32,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644835665] [2024-06-04 15:29:32,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644835665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:32,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:32,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:32,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797731618] [2024-06-04 15:29:32,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:32,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:32,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:32,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:32,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:32,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:32,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 145 transitions, 1239 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:32,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:32,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:32,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:32,895 INFO L124 PetriNetUnfolderBase]: 356/659 cut-off events. [2024-06-04 15:29:32,895 INFO L125 PetriNetUnfolderBase]: For 32851/32851 co-relation queries the response was YES. [2024-06-04 15:29:32,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4319 conditions, 659 events. 356/659 cut-off events. For 32851/32851 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3061 event pairs, 30 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 4239. Up to 536 conditions per place. [2024-06-04 15:29:32,899 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 32 changer transitions 0/167 dead transitions. [2024-06-04 15:29:32,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 167 transitions, 1823 flow [2024-06-04 15:29:32,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:32,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:32,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 15:29:32,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 15:29:32,900 INFO L175 Difference]: Start difference. First operand has 160 places, 145 transitions, 1239 flow. Second operand 10 states and 127 transitions. [2024-06-04 15:29:32,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 167 transitions, 1823 flow [2024-06-04 15:29:32,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 167 transitions, 1764 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 15:29:32,947 INFO L231 Difference]: Finished difference. Result has 164 places, 150 transitions, 1364 flow [2024-06-04 15:29:32,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1364, PETRI_PLACES=164, PETRI_TRANSITIONS=150} [2024-06-04 15:29:32,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-04 15:29:32,948 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 150 transitions, 1364 flow [2024-06-04 15:29:32,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:32,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:32,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:32,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 15:29:32,948 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:32,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:32,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1691831304, now seen corresponding path program 3 times [2024-06-04 15:29:32,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:32,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846109484] [2024-06-04 15:29:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:32,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:34,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:34,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846109484] [2024-06-04 15:29:34,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846109484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:34,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:34,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:34,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123467966] [2024-06-04 15:29:34,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:34,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:34,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:34,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:34,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:34,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:34,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 150 transitions, 1364 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:34,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:34,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:34,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:34,839 INFO L124 PetriNetUnfolderBase]: 354/656 cut-off events. [2024-06-04 15:29:34,840 INFO L125 PetriNetUnfolderBase]: For 31453/31453 co-relation queries the response was YES. [2024-06-04 15:29:34,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4333 conditions, 656 events. 354/656 cut-off events. For 31453/31453 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3042 event pairs, 30 based on Foata normal form. 1/655 useless extension candidates. Maximal degree in co-relation 4252. Up to 535 conditions per place. [2024-06-04 15:29:34,844 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 34 changer transitions 0/169 dead transitions. [2024-06-04 15:29:34,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 169 transitions, 1892 flow [2024-06-04 15:29:34,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:34,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-04 15:29:34,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:29:34,845 INFO L175 Difference]: Start difference. First operand has 164 places, 150 transitions, 1364 flow. Second operand 10 states and 128 transitions. [2024-06-04 15:29:34,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 169 transitions, 1892 flow [2024-06-04 15:29:34,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 169 transitions, 1795 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-04 15:29:34,898 INFO L231 Difference]: Finished difference. Result has 168 places, 152 transitions, 1386 flow [2024-06-04 15:29:34,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1386, PETRI_PLACES=168, PETRI_TRANSITIONS=152} [2024-06-04 15:29:34,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-04 15:29:34,898 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 152 transitions, 1386 flow [2024-06-04 15:29:34,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:34,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:34,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:34,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 15:29:34,899 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:34,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:34,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1857292498, now seen corresponding path program 4 times [2024-06-04 15:29:34,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:34,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495099046] [2024-06-04 15:29:34,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:34,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:35,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:35,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495099046] [2024-06-04 15:29:35,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495099046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:35,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:35,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:35,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045112089] [2024-06-04 15:29:35,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:35,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:35,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:35,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:35,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:35,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 152 transitions, 1386 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:35,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:35,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:35,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:36,165 INFO L124 PetriNetUnfolderBase]: 358/664 cut-off events. [2024-06-04 15:29:36,165 INFO L125 PetriNetUnfolderBase]: For 33224/33224 co-relation queries the response was YES. [2024-06-04 15:29:36,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4413 conditions, 664 events. 358/664 cut-off events. For 33224/33224 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3084 event pairs, 32 based on Foata normal form. 2/664 useless extension candidates. Maximal degree in co-relation 4330. Up to 566 conditions per place. [2024-06-04 15:29:36,170 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 138 selfloop transitions, 25 changer transitions 0/166 dead transitions. [2024-06-04 15:29:36,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 166 transitions, 1773 flow [2024-06-04 15:29:36,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:36,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:36,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-04 15:29:36,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 15:29:36,171 INFO L175 Difference]: Start difference. First operand has 168 places, 152 transitions, 1386 flow. Second operand 9 states and 111 transitions. [2024-06-04 15:29:36,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 166 transitions, 1773 flow [2024-06-04 15:29:36,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 166 transitions, 1689 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:36,232 INFO L231 Difference]: Finished difference. Result has 170 places, 154 transitions, 1389 flow [2024-06-04 15:29:36,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1389, PETRI_PLACES=170, PETRI_TRANSITIONS=154} [2024-06-04 15:29:36,232 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-04 15:29:36,233 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 154 transitions, 1389 flow [2024-06-04 15:29:36,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:36,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:36,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:36,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 15:29:36,233 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:36,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:36,234 INFO L85 PathProgramCache]: Analyzing trace with hash -290716980, now seen corresponding path program 4 times [2024-06-04 15:29:36,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:36,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047826474] [2024-06-04 15:29:36,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:36,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:37,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:37,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047826474] [2024-06-04 15:29:37,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047826474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:37,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:37,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:37,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117476402] [2024-06-04 15:29:37,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:37,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:37,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:37,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:37,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:37,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:37,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 154 transitions, 1389 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:37,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:37,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:37,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:38,151 INFO L124 PetriNetUnfolderBase]: 366/679 cut-off events. [2024-06-04 15:29:38,152 INFO L125 PetriNetUnfolderBase]: For 34966/34966 co-relation queries the response was YES. [2024-06-04 15:29:38,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4583 conditions, 679 events. 366/679 cut-off events. For 34966/34966 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3199 event pairs, 31 based on Foata normal form. 1/678 useless extension candidates. Maximal degree in co-relation 4499. Up to 563 conditions per place. [2024-06-04 15:29:38,156 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 34 changer transitions 0/174 dead transitions. [2024-06-04 15:29:38,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 174 transitions, 1981 flow [2024-06-04 15:29:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:38,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 15:29:38,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-04 15:29:38,157 INFO L175 Difference]: Start difference. First operand has 170 places, 154 transitions, 1389 flow. Second operand 10 states and 126 transitions. [2024-06-04 15:29:38,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 174 transitions, 1981 flow [2024-06-04 15:29:38,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 174 transitions, 1890 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:38,213 INFO L231 Difference]: Finished difference. Result has 173 places, 161 transitions, 1498 flow [2024-06-04 15:29:38,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1498, PETRI_PLACES=173, PETRI_TRANSITIONS=161} [2024-06-04 15:29:38,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-04 15:29:38,213 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 161 transitions, 1498 flow [2024-06-04 15:29:38,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:38,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:38,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:38,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 15:29:38,214 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:38,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:38,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1857476948, now seen corresponding path program 5 times [2024-06-04 15:29:38,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:38,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984594153] [2024-06-04 15:29:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:38,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:39,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:39,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:39,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984594153] [2024-06-04 15:29:39,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984594153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:39,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:39,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:39,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560275659] [2024-06-04 15:29:39,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:39,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:39,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:39,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:39,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:39,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:39,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 161 transitions, 1498 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:39,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:39,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:39,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:39,918 INFO L124 PetriNetUnfolderBase]: 372/691 cut-off events. [2024-06-04 15:29:39,918 INFO L125 PetriNetUnfolderBase]: For 38330/38330 co-relation queries the response was YES. [2024-06-04 15:29:39,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4767 conditions, 691 events. 372/691 cut-off events. For 38330/38330 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3255 event pairs, 32 based on Foata normal form. 2/691 useless extension candidates. Maximal degree in co-relation 4682. Up to 559 conditions per place. [2024-06-04 15:29:39,923 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 39 changer transitions 0/178 dead transitions. [2024-06-04 15:29:39,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 178 transitions, 2104 flow [2024-06-04 15:29:39,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 15:29:39,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 15:29:39,924 INFO L175 Difference]: Start difference. First operand has 173 places, 161 transitions, 1498 flow. Second operand 10 states and 127 transitions. [2024-06-04 15:29:39,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 178 transitions, 2104 flow [2024-06-04 15:29:39,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 178 transitions, 1985 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-04 15:29:39,994 INFO L231 Difference]: Finished difference. Result has 178 places, 165 transitions, 1585 flow [2024-06-04 15:29:39,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1585, PETRI_PLACES=178, PETRI_TRANSITIONS=165} [2024-06-04 15:29:39,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-04 15:29:39,995 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 165 transitions, 1585 flow [2024-06-04 15:29:39,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:39,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:39,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:39,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 15:29:39,996 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:39,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:39,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1863726548, now seen corresponding path program 6 times [2024-06-04 15:29:39,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:39,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609658305] [2024-06-04 15:29:39,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:39,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:41,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:41,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609658305] [2024-06-04 15:29:41,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609658305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:41,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:41,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:41,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445341491] [2024-06-04 15:29:41,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:41,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:41,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:41,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:41,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:41,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:41,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 165 transitions, 1585 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:41,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:41,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:41,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:41,773 INFO L124 PetriNetUnfolderBase]: 390/728 cut-off events. [2024-06-04 15:29:41,774 INFO L125 PetriNetUnfolderBase]: For 44246/44246 co-relation queries the response was YES. [2024-06-04 15:29:41,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5322 conditions, 728 events. 390/728 cut-off events. For 44246/44246 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3517 event pairs, 34 based on Foata normal form. 1/727 useless extension candidates. Maximal degree in co-relation 5235. Up to 497 conditions per place. [2024-06-04 15:29:41,778 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 60 changer transitions 0/190 dead transitions. [2024-06-04 15:29:41,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 190 transitions, 2538 flow [2024-06-04 15:29:41,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:41,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-04 15:29:41,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-04 15:29:41,779 INFO L175 Difference]: Start difference. First operand has 178 places, 165 transitions, 1585 flow. Second operand 10 states and 133 transitions. [2024-06-04 15:29:41,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 190 transitions, 2538 flow [2024-06-04 15:29:41,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 190 transitions, 2437 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-04 15:29:41,856 INFO L231 Difference]: Finished difference. Result has 183 places, 172 transitions, 1811 flow [2024-06-04 15:29:41,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1811, PETRI_PLACES=183, PETRI_TRANSITIONS=172} [2024-06-04 15:29:41,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-04 15:29:41,856 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 172 transitions, 1811 flow [2024-06-04 15:29:41,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:41,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:41,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:41,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 15:29:41,857 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:41,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1863733058, now seen corresponding path program 7 times [2024-06-04 15:29:41,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:41,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567492299] [2024-06-04 15:29:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:41,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:43,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:43,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:43,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567492299] [2024-06-04 15:29:43,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567492299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:43,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:43,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:43,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417118049] [2024-06-04 15:29:43,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:43,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:43,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:43,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:43,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:43,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:43,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 172 transitions, 1811 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:43,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:43,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:43,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:43,773 INFO L124 PetriNetUnfolderBase]: 401/750 cut-off events. [2024-06-04 15:29:43,773 INFO L125 PetriNetUnfolderBase]: For 50316/50316 co-relation queries the response was YES. [2024-06-04 15:29:43,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5826 conditions, 750 events. 401/750 cut-off events. For 50316/50316 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3663 event pairs, 35 based on Foata normal form. 2/750 useless extension candidates. Maximal degree in co-relation 5736. Up to 509 conditions per place. [2024-06-04 15:29:43,779 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 131 selfloop transitions, 62 changer transitions 0/196 dead transitions. [2024-06-04 15:29:43,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 196 transitions, 2765 flow [2024-06-04 15:29:43,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-04 15:29:43,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-04 15:29:43,780 INFO L175 Difference]: Start difference. First operand has 183 places, 172 transitions, 1811 flow. Second operand 10 states and 134 transitions. [2024-06-04 15:29:43,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 196 transitions, 2765 flow [2024-06-04 15:29:43,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 196 transitions, 2533 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:43,872 INFO L231 Difference]: Finished difference. Result has 186 places, 177 transitions, 1858 flow [2024-06-04 15:29:43,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1858, PETRI_PLACES=186, PETRI_TRANSITIONS=177} [2024-06-04 15:29:43,872 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-04 15:29:43,872 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 177 transitions, 1858 flow [2024-06-04 15:29:43,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:43,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:43,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:43,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 15:29:43,873 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:43,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:43,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1863972626, now seen corresponding path program 1 times [2024-06-04 15:29:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:43,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204716864] [2024-06-04 15:29:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:43,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:44,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:44,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204716864] [2024-06-04 15:29:44,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204716864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:44,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:44,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:44,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708693772] [2024-06-04 15:29:44,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:44,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:44,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:44,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:44,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:44,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:44,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 177 transitions, 1858 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:44,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:44,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:44,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:45,244 INFO L124 PetriNetUnfolderBase]: 405/758 cut-off events. [2024-06-04 15:29:45,244 INFO L125 PetriNetUnfolderBase]: For 49996/49996 co-relation queries the response was YES. [2024-06-04 15:29:45,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5720 conditions, 758 events. 405/758 cut-off events. For 49996/49996 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3738 event pairs, 33 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 5630. Up to 671 conditions per place. [2024-06-04 15:29:45,250 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 173 selfloop transitions, 16 changer transitions 0/192 dead transitions. [2024-06-04 15:29:45,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 192 transitions, 2305 flow [2024-06-04 15:29:45,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:45,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 15:29:45,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-04 15:29:45,250 INFO L175 Difference]: Start difference. First operand has 186 places, 177 transitions, 1858 flow. Second operand 9 states and 109 transitions. [2024-06-04 15:29:45,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 192 transitions, 2305 flow [2024-06-04 15:29:45,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 192 transitions, 2158 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-04 15:29:45,338 INFO L231 Difference]: Finished difference. Result has 189 places, 178 transitions, 1775 flow [2024-06-04 15:29:45,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1775, PETRI_PLACES=189, PETRI_TRANSITIONS=178} [2024-06-04 15:29:45,338 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-04 15:29:45,339 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 178 transitions, 1775 flow [2024-06-04 15:29:45,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:45,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:45,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:45,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 15:29:45,339 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:45,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:45,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1863963698, now seen corresponding path program 8 times [2024-06-04 15:29:45,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:45,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181978676] [2024-06-04 15:29:45,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:45,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:46,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:46,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181978676] [2024-06-04 15:29:46,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181978676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:46,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:46,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:46,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236364823] [2024-06-04 15:29:46,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:46,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:46,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:46,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:46,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:46,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:46,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 178 transitions, 1775 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:46,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:46,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:46,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:47,080 INFO L124 PetriNetUnfolderBase]: 401/752 cut-off events. [2024-06-04 15:29:47,081 INFO L125 PetriNetUnfolderBase]: For 47388/47388 co-relation queries the response was YES. [2024-06-04 15:29:47,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5409 conditions, 752 events. 401/752 cut-off events. For 47388/47388 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3707 event pairs, 34 based on Foata normal form. 2/752 useless extension candidates. Maximal degree in co-relation 5318. Up to 514 conditions per place. [2024-06-04 15:29:47,088 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 66 changer transitions 0/195 dead transitions. [2024-06-04 15:29:47,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 195 transitions, 2460 flow [2024-06-04 15:29:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:29:47,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:29:47,090 INFO L175 Difference]: Start difference. First operand has 189 places, 178 transitions, 1775 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:29:47,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 195 transitions, 2460 flow [2024-06-04 15:29:47,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 195 transitions, 2364 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:47,182 INFO L231 Difference]: Finished difference. Result has 192 places, 178 transitions, 1817 flow [2024-06-04 15:29:47,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1817, PETRI_PLACES=192, PETRI_TRANSITIONS=178} [2024-06-04 15:29:47,182 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-04 15:29:47,182 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 178 transitions, 1817 flow [2024-06-04 15:29:47,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:47,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:47,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:47,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 15:29:47,183 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:47,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:47,183 INFO L85 PathProgramCache]: Analyzing trace with hash -713178926, now seen corresponding path program 5 times [2024-06-04 15:29:47,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:47,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266354792] [2024-06-04 15:29:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:47,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:48,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:48,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:48,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266354792] [2024-06-04 15:29:48,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266354792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:48,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:48,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:48,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225447120] [2024-06-04 15:29:48,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:48,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:48,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:48,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:48,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:48,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:48,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 178 transitions, 1817 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:48,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:48,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:48,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:48,398 INFO L124 PetriNetUnfolderBase]: 398/748 cut-off events. [2024-06-04 15:29:48,398 INFO L125 PetriNetUnfolderBase]: For 44935/44938 co-relation queries the response was YES. [2024-06-04 15:29:48,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5304 conditions, 748 events. 398/748 cut-off events. For 44935/44938 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3694 event pairs, 39 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 5212. Up to 621 conditions per place. [2024-06-04 15:29:48,403 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 156 selfloop transitions, 30 changer transitions 0/189 dead transitions. [2024-06-04 15:29:48,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 189 transitions, 2221 flow [2024-06-04 15:29:48,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:48,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:48,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 15:29:48,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 15:29:48,405 INFO L175 Difference]: Start difference. First operand has 192 places, 178 transitions, 1817 flow. Second operand 9 states and 110 transitions. [2024-06-04 15:29:48,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 189 transitions, 2221 flow [2024-06-04 15:29:48,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 189 transitions, 2072 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:48,499 INFO L231 Difference]: Finished difference. Result has 192 places, 179 transitions, 1740 flow [2024-06-04 15:29:48,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1668, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1740, PETRI_PLACES=192, PETRI_TRANSITIONS=179} [2024-06-04 15:29:48,499 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-04 15:29:48,499 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 179 transitions, 1740 flow [2024-06-04 15:29:48,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:48,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:48,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:48,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 15:29:48,500 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:48,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:48,500 INFO L85 PathProgramCache]: Analyzing trace with hash -706738366, now seen corresponding path program 9 times [2024-06-04 15:29:48,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:48,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359762722] [2024-06-04 15:29:48,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:48,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:49,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:49,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359762722] [2024-06-04 15:29:49,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359762722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:49,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:49,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:49,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190616087] [2024-06-04 15:29:49,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:49,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:49,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:49,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:49,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:49,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:49,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 179 transitions, 1740 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:49,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:49,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:49,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:50,353 INFO L124 PetriNetUnfolderBase]: 416/783 cut-off events. [2024-06-04 15:29:50,354 INFO L125 PetriNetUnfolderBase]: For 51089/51092 co-relation queries the response was YES. [2024-06-04 15:29:50,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5725 conditions, 783 events. 416/783 cut-off events. For 51089/51092 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3919 event pairs, 36 based on Foata normal form. 1/779 useless extension candidates. Maximal degree in co-relation 5632. Up to 606 conditions per place. [2024-06-04 15:29:50,362 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 157 selfloop transitions, 45 changer transitions 0/205 dead transitions. [2024-06-04 15:29:50,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 205 transitions, 2771 flow [2024-06-04 15:29:50,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:50,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:29:50,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:29:50,366 INFO L175 Difference]: Start difference. First operand has 192 places, 179 transitions, 1740 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:29:50,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 205 transitions, 2771 flow [2024-06-04 15:29:50,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 205 transitions, 2661 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:50,477 INFO L231 Difference]: Finished difference. Result has 196 places, 190 transitions, 1977 flow [2024-06-04 15:29:50,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1977, PETRI_PLACES=196, PETRI_TRANSITIONS=190} [2024-06-04 15:29:50,477 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-04 15:29:50,478 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 190 transitions, 1977 flow [2024-06-04 15:29:50,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:50,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:50,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:50,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 15:29:50,478 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:50,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:50,478 INFO L85 PathProgramCache]: Analyzing trace with hash -706744876, now seen corresponding path program 10 times [2024-06-04 15:29:50,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:50,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698826690] [2024-06-04 15:29:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:50,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:51,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:51,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:51,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698826690] [2024-06-04 15:29:51,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698826690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:51,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:51,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:51,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162630560] [2024-06-04 15:29:51,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:51,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:51,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:51,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:51,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:51,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:51,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 190 transitions, 1977 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:51,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:51,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:51,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:52,393 INFO L124 PetriNetUnfolderBase]: 429/806 cut-off events. [2024-06-04 15:29:52,393 INFO L125 PetriNetUnfolderBase]: For 57646/57649 co-relation queries the response was YES. [2024-06-04 15:29:52,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6193 conditions, 806 events. 429/806 cut-off events. For 57646/57649 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4057 event pairs, 42 based on Foata normal form. 1/802 useless extension candidates. Maximal degree in co-relation 6097. Up to 589 conditions per place. [2024-06-04 15:29:52,399 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 151 selfloop transitions, 57 changer transitions 0/211 dead transitions. [2024-06-04 15:29:52,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 211 transitions, 2996 flow [2024-06-04 15:29:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:52,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-04 15:29:52,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-04 15:29:52,401 INFO L175 Difference]: Start difference. First operand has 196 places, 190 transitions, 1977 flow. Second operand 10 states and 134 transitions. [2024-06-04 15:29:52,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 211 transitions, 2996 flow [2024-06-04 15:29:52,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 211 transitions, 2821 flow, removed 70 selfloop flow, removed 4 redundant places. [2024-06-04 15:29:52,523 INFO L231 Difference]: Finished difference. Result has 203 places, 198 transitions, 2148 flow [2024-06-04 15:29:52,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2148, PETRI_PLACES=203, PETRI_TRANSITIONS=198} [2024-06-04 15:29:52,524 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-04 15:29:52,524 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 198 transitions, 2148 flow [2024-06-04 15:29:52,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:52,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:52,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:52,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 15:29:52,524 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:52,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:52,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1059826638, now seen corresponding path program 11 times [2024-06-04 15:29:52,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:52,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582765822] [2024-06-04 15:29:52,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:52,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:53,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:53,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582765822] [2024-06-04 15:29:53,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582765822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:53,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:53,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:53,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819918228] [2024-06-04 15:29:53,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:53,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:53,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:53,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:53,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:53,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:53,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 198 transitions, 2148 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:53,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:53,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:53,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:54,217 INFO L124 PetriNetUnfolderBase]: 440/827 cut-off events. [2024-06-04 15:29:54,218 INFO L125 PetriNetUnfolderBase]: For 63601/63601 co-relation queries the response was YES. [2024-06-04 15:29:54,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6526 conditions, 827 events. 440/827 cut-off events. For 63601/63601 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4198 event pairs, 39 based on Foata normal form. 2/827 useless extension candidates. Maximal degree in co-relation 6427. Up to 718 conditions per place. [2024-06-04 15:29:54,227 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 23 changer transitions 0/215 dead transitions. [2024-06-04 15:29:54,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 215 transitions, 2878 flow [2024-06-04 15:29:54,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:54,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:54,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 15:29:54,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 15:29:54,228 INFO L175 Difference]: Start difference. First operand has 203 places, 198 transitions, 2148 flow. Second operand 10 states and 121 transitions. [2024-06-04 15:29:54,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 215 transitions, 2878 flow [2024-06-04 15:29:54,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 215 transitions, 2807 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-04 15:29:54,363 INFO L231 Difference]: Finished difference. Result has 209 places, 203 transitions, 2275 flow [2024-06-04 15:29:54,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2275, PETRI_PLACES=209, PETRI_TRANSITIONS=203} [2024-06-04 15:29:54,363 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-04 15:29:54,364 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 203 transitions, 2275 flow [2024-06-04 15:29:54,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:54,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:54,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:54,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 15:29:54,364 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:54,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash -706498798, now seen corresponding path program 2 times [2024-06-04 15:29:54,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:54,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785963317] [2024-06-04 15:29:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:54,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:55,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:55,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785963317] [2024-06-04 15:29:55,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785963317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:55,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:55,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:55,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978249091] [2024-06-04 15:29:55,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:55,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:55,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:55,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:55,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:55,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:55,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 203 transitions, 2275 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:55,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:55,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:55,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:55,963 INFO L124 PetriNetUnfolderBase]: 444/836 cut-off events. [2024-06-04 15:29:55,963 INFO L125 PetriNetUnfolderBase]: For 65257/65260 co-relation queries the response was YES. [2024-06-04 15:29:55,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6652 conditions, 836 events. 444/836 cut-off events. For 65257/65260 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4261 event pairs, 38 based on Foata normal form. 4/836 useless extension candidates. Maximal degree in co-relation 6551. Up to 730 conditions per place. [2024-06-04 15:29:55,973 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 193 selfloop transitions, 19 changer transitions 0/215 dead transitions. [2024-06-04 15:29:55,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 215 transitions, 2757 flow [2024-06-04 15:29:55,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:55,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 15:29:55,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:29:55,975 INFO L175 Difference]: Start difference. First operand has 209 places, 203 transitions, 2275 flow. Second operand 9 states and 108 transitions. [2024-06-04 15:29:55,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 215 transitions, 2757 flow [2024-06-04 15:29:56,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 215 transitions, 2653 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-04 15:29:56,123 INFO L231 Difference]: Finished difference. Result has 212 places, 204 transitions, 2243 flow [2024-06-04 15:29:56,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2243, PETRI_PLACES=212, PETRI_TRANSITIONS=204} [2024-06-04 15:29:56,124 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-04 15:29:56,124 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 204 transitions, 2243 flow [2024-06-04 15:29:56,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:56,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:56,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:56,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 15:29:56,124 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:56,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash -712994476, now seen corresponding path program 12 times [2024-06-04 15:29:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:56,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515385386] [2024-06-04 15:29:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:56,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:57,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:57,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515385386] [2024-06-04 15:29:57,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515385386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:57,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:57,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:57,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642274333] [2024-06-04 15:29:57,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:57,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:57,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:57,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:57,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:57,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:57,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 204 transitions, 2243 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:57,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:57,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:57,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:57,658 INFO L124 PetriNetUnfolderBase]: 450/848 cut-off events. [2024-06-04 15:29:57,658 INFO L125 PetriNetUnfolderBase]: For 66939/66942 co-relation queries the response was YES. [2024-06-04 15:29:57,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6716 conditions, 848 events. 450/848 cut-off events. For 66939/66942 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4369 event pairs, 40 based on Foata normal form. 2/845 useless extension candidates. Maximal degree in co-relation 6613. Up to 675 conditions per place. [2024-06-04 15:29:57,668 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 173 selfloop transitions, 43 changer transitions 0/219 dead transitions. [2024-06-04 15:29:57,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 219 transitions, 2933 flow [2024-06-04 15:29:57,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:57,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 15:29:57,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-04 15:29:57,670 INFO L175 Difference]: Start difference. First operand has 212 places, 204 transitions, 2243 flow. Second operand 10 states and 126 transitions. [2024-06-04 15:29:57,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 219 transitions, 2933 flow [2024-06-04 15:29:57,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 219 transitions, 2871 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:57,809 INFO L231 Difference]: Finished difference. Result has 215 places, 208 transitions, 2380 flow [2024-06-04 15:29:57,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2380, PETRI_PLACES=215, PETRI_TRANSITIONS=208} [2024-06-04 15:29:57,809 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-04 15:29:57,810 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 208 transitions, 2380 flow [2024-06-04 15:29:57,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:57,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:57,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:57,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 15:29:57,810 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:57,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:57,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1059817710, now seen corresponding path program 3 times [2024-06-04 15:29:57,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:57,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599628318] [2024-06-04 15:29:57,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:57,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:59,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:59,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:59,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599628318] [2024-06-04 15:29:59,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599628318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:59,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:59,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:59,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244312629] [2024-06-04 15:29:59,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:59,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:59,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:59,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:59,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:59,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:29:59,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 208 transitions, 2380 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:59,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:59,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:29:59,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:00,111 INFO L124 PetriNetUnfolderBase]: 454/855 cut-off events. [2024-06-04 15:30:00,111 INFO L125 PetriNetUnfolderBase]: For 69031/69031 co-relation queries the response was YES. [2024-06-04 15:30:00,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6837 conditions, 855 events. 454/855 cut-off events. For 69031/69031 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4410 event pairs, 36 based on Foata normal form. 2/855 useless extension candidates. Maximal degree in co-relation 6733. Up to 764 conditions per place. [2024-06-04 15:30:00,117 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 202 selfloop transitions, 15 changer transitions 0/220 dead transitions. [2024-06-04 15:30:00,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 220 transitions, 2870 flow [2024-06-04 15:30:00,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 15:30:00,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:30:00,118 INFO L175 Difference]: Start difference. First operand has 215 places, 208 transitions, 2380 flow. Second operand 10 states and 115 transitions. [2024-06-04 15:30:00,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 220 transitions, 2870 flow [2024-06-04 15:30:00,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 220 transitions, 2695 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:00,270 INFO L231 Difference]: Finished difference. Result has 217 places, 209 transitions, 2271 flow [2024-06-04 15:30:00,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2205, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2271, PETRI_PLACES=217, PETRI_TRANSITIONS=209} [2024-06-04 15:30:00,270 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-04 15:30:00,271 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 209 transitions, 2271 flow [2024-06-04 15:30:00,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:00,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:00,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:00,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 15:30:00,271 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:00,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:00,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1049698380, now seen corresponding path program 4 times [2024-06-04 15:30:00,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:00,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383889468] [2024-06-04 15:30:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:00,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:01,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:01,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383889468] [2024-06-04 15:30:01,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383889468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:01,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:01,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:01,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513968796] [2024-06-04 15:30:01,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:01,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:01,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:01,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:01,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:01,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:01,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 209 transitions, 2271 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:01,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:01,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:01,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:02,339 INFO L124 PetriNetUnfolderBase]: 458/863 cut-off events. [2024-06-04 15:30:02,339 INFO L125 PetriNetUnfolderBase]: For 70646/70646 co-relation queries the response was YES. [2024-06-04 15:30:02,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6805 conditions, 863 events. 458/863 cut-off events. For 70646/70646 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4465 event pairs, 38 based on Foata normal form. 2/863 useless extension candidates. Maximal degree in co-relation 6700. Up to 766 conditions per place. [2024-06-04 15:30:02,345 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 200 selfloop transitions, 19 changer transitions 0/222 dead transitions. [2024-06-04 15:30:02,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 222 transitions, 2769 flow [2024-06-04 15:30:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:02,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:02,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 15:30:02,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 15:30:02,346 INFO L175 Difference]: Start difference. First operand has 217 places, 209 transitions, 2271 flow. Second operand 11 states and 126 transitions. [2024-06-04 15:30:02,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 222 transitions, 2769 flow [2024-06-04 15:30:02,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 222 transitions, 2713 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:02,501 INFO L231 Difference]: Finished difference. Result has 220 places, 210 transitions, 2291 flow [2024-06-04 15:30:02,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2215, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2291, PETRI_PLACES=220, PETRI_TRANSITIONS=210} [2024-06-04 15:30:02,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-04 15:30:02,502 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 210 transitions, 2291 flow [2024-06-04 15:30:02,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:02,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:02,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:02,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 15:30:02,503 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:02,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:02,503 INFO L85 PathProgramCache]: Analyzing trace with hash -713000986, now seen corresponding path program 13 times [2024-06-04 15:30:02,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:02,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134223914] [2024-06-04 15:30:02,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:02,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:03,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:03,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134223914] [2024-06-04 15:30:03,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134223914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:03,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:03,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:03,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930510635] [2024-06-04 15:30:03,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:03,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:03,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:03,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:03,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:03,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:03,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 210 transitions, 2291 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:03,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:03,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:03,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:04,244 INFO L124 PetriNetUnfolderBase]: 456/861 cut-off events. [2024-06-04 15:30:04,245 INFO L125 PetriNetUnfolderBase]: For 67808/67811 co-relation queries the response was YES. [2024-06-04 15:30:04,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6702 conditions, 861 events. 456/861 cut-off events. For 67808/67811 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4475 event pairs, 42 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 6596. Up to 690 conditions per place. [2024-06-04 15:30:04,251 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 175 selfloop transitions, 44 changer transitions 0/222 dead transitions. [2024-06-04 15:30:04,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 222 transitions, 2904 flow [2024-06-04 15:30:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:04,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 15:30:04,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 15:30:04,252 INFO L175 Difference]: Start difference. First operand has 220 places, 210 transitions, 2291 flow. Second operand 10 states and 127 transitions. [2024-06-04 15:30:04,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 222 transitions, 2904 flow [2024-06-04 15:30:04,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 222 transitions, 2802 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-04 15:30:04,404 INFO L231 Difference]: Finished difference. Result has 221 places, 211 transitions, 2299 flow [2024-06-04 15:30:04,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2195, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2299, PETRI_PLACES=221, PETRI_TRANSITIONS=211} [2024-06-04 15:30:04,405 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-04 15:30:04,405 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 211 transitions, 2299 flow [2024-06-04 15:30:04,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:04,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:04,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:04,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 15:30:04,405 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:04,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1102080122, now seen corresponding path program 5 times [2024-06-04 15:30:04,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:04,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839726642] [2024-06-04 15:30:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:04,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:05,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:05,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839726642] [2024-06-04 15:30:05,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839726642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:05,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:05,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:05,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246572156] [2024-06-04 15:30:05,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:05,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:05,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:05,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:05,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:05,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:05,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 211 transitions, 2299 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:05,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:05,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:05,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:06,252 INFO L124 PetriNetUnfolderBase]: 460/868 cut-off events. [2024-06-04 15:30:06,252 INFO L125 PetriNetUnfolderBase]: For 71735/71735 co-relation queries the response was YES. [2024-06-04 15:30:06,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6773 conditions, 868 events. 460/868 cut-off events. For 71735/71735 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4520 event pairs, 36 based on Foata normal form. 2/868 useless extension candidates. Maximal degree in co-relation 6666. Up to 751 conditions per place. [2024-06-04 15:30:06,259 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 201 selfloop transitions, 21 changer transitions 0/225 dead transitions. [2024-06-04 15:30:06,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 225 transitions, 2807 flow [2024-06-04 15:30:06,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:06,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 15:30:06,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 15:30:06,260 INFO L175 Difference]: Start difference. First operand has 221 places, 211 transitions, 2299 flow. Second operand 11 states and 126 transitions. [2024-06-04 15:30:06,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 225 transitions, 2807 flow [2024-06-04 15:30:06,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 225 transitions, 2726 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:06,428 INFO L231 Difference]: Finished difference. Result has 225 places, 212 transitions, 2300 flow [2024-06-04 15:30:06,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2218, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2300, PETRI_PLACES=225, PETRI_TRANSITIONS=212} [2024-06-04 15:30:06,429 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-04 15:30:06,429 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 212 transitions, 2300 flow [2024-06-04 15:30:06,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:06,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:06,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:06,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 15:30:06,430 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:06,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:06,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1344926508, now seen corresponding path program 14 times [2024-06-04 15:30:06,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:06,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001996964] [2024-06-04 15:30:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:06,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:07,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:07,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001996964] [2024-06-04 15:30:07,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001996964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:07,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:07,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:07,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328748710] [2024-06-04 15:30:07,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:07,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:07,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:07,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:07,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:07,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:07,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 212 transitions, 2300 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:07,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:07,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:07,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:08,317 INFO L124 PetriNetUnfolderBase]: 463/874 cut-off events. [2024-06-04 15:30:08,317 INFO L125 PetriNetUnfolderBase]: For 71934/71937 co-relation queries the response was YES. [2024-06-04 15:30:08,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6834 conditions, 874 events. 463/874 cut-off events. For 71934/71937 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4549 event pairs, 38 based on Foata normal form. 1/870 useless extension candidates. Maximal degree in co-relation 6726. Up to 575 conditions per place. [2024-06-04 15:30:08,328 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 154 selfloop transitions, 87 changer transitions 0/244 dead transitions. [2024-06-04 15:30:08,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 244 transitions, 3357 flow [2024-06-04 15:30:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:08,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:08,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:30:08,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:30:08,329 INFO L175 Difference]: Start difference. First operand has 225 places, 212 transitions, 2300 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:30:08,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 244 transitions, 3357 flow [2024-06-04 15:30:08,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 244 transitions, 3285 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 15:30:08,496 INFO L231 Difference]: Finished difference. Result has 229 places, 225 transitions, 2702 flow [2024-06-04 15:30:08,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2702, PETRI_PLACES=229, PETRI_TRANSITIONS=225} [2024-06-04 15:30:08,496 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-04 15:30:08,496 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 225 transitions, 2702 flow [2024-06-04 15:30:08,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:08,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:08,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:08,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 15:30:08,497 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:08,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:08,497 INFO L85 PathProgramCache]: Analyzing trace with hash -706507726, now seen corresponding path program 15 times [2024-06-04 15:30:08,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:08,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430611573] [2024-06-04 15:30:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:08,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:09,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:09,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430611573] [2024-06-04 15:30:09,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430611573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:09,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:09,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:09,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399650662] [2024-06-04 15:30:09,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:09,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:09,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:09,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:09,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:10,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:10,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 225 transitions, 2702 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:10,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:10,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:10,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:10,460 INFO L124 PetriNetUnfolderBase]: 461/871 cut-off events. [2024-06-04 15:30:10,461 INFO L125 PetriNetUnfolderBase]: For 71535/71538 co-relation queries the response was YES. [2024-06-04 15:30:10,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6999 conditions, 871 events. 461/871 cut-off events. For 71535/71538 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4538 event pairs, 38 based on Foata normal form. 1/867 useless extension candidates. Maximal degree in co-relation 6887. Up to 688 conditions per place. [2024-06-04 15:30:10,471 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 52 changer transitions 0/237 dead transitions. [2024-06-04 15:30:10,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 237 transitions, 3212 flow [2024-06-04 15:30:10,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:10,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:10,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 15:30:10,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-04 15:30:10,472 INFO L175 Difference]: Start difference. First operand has 229 places, 225 transitions, 2702 flow. Second operand 10 states and 126 transitions. [2024-06-04 15:30:10,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 237 transitions, 3212 flow [2024-06-04 15:30:10,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 237 transitions, 3033 flow, removed 73 selfloop flow, removed 3 redundant places. [2024-06-04 15:30:10,636 INFO L231 Difference]: Finished difference. Result has 237 places, 226 transitions, 2645 flow [2024-06-04 15:30:10,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2523, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2645, PETRI_PLACES=237, PETRI_TRANSITIONS=226} [2024-06-04 15:30:10,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-04 15:30:10,637 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 226 transitions, 2645 flow [2024-06-04 15:30:10,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:10,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:10,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:10,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 15:30:10,637 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:10,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:10,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1344917580, now seen corresponding path program 6 times [2024-06-04 15:30:10,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:10,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692050905] [2024-06-04 15:30:10,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:10,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:12,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:12,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692050905] [2024-06-04 15:30:12,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692050905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:12,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:12,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:12,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687247909] [2024-06-04 15:30:12,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:12,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:12,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:12,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:12,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:12,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:12,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 226 transitions, 2645 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:12,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:12,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:12,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:12,460 INFO L124 PetriNetUnfolderBase]: 458/866 cut-off events. [2024-06-04 15:30:12,460 INFO L125 PetriNetUnfolderBase]: For 69702/69705 co-relation queries the response was YES. [2024-06-04 15:30:12,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6775 conditions, 866 events. 458/866 cut-off events. For 69702/69705 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4490 event pairs, 32 based on Foata normal form. 4/866 useless extension candidates. Maximal degree in co-relation 6660. Up to 737 conditions per place. [2024-06-04 15:30:12,471 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 205 selfloop transitions, 30 changer transitions 0/238 dead transitions. [2024-06-04 15:30:12,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 238 transitions, 3147 flow [2024-06-04 15:30:12,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 15:30:12,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:30:12,473 INFO L175 Difference]: Start difference. First operand has 237 places, 226 transitions, 2645 flow. Second operand 10 states and 120 transitions. [2024-06-04 15:30:12,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 238 transitions, 3147 flow [2024-06-04 15:30:12,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 238 transitions, 3051 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:12,638 INFO L231 Difference]: Finished difference. Result has 240 places, 226 transitions, 2613 flow [2024-06-04 15:30:12,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2549, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2613, PETRI_PLACES=240, PETRI_TRANSITIONS=226} [2024-06-04 15:30:12,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-04 15:30:12,639 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 226 transitions, 2613 flow [2024-06-04 15:30:12,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:12,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:12,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:12,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 15:30:12,640 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:12,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:12,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1803756084, now seen corresponding path program 16 times [2024-06-04 15:30:12,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:12,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862018432] [2024-06-04 15:30:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:12,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:13,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:13,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862018432] [2024-06-04 15:30:13,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862018432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:13,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:13,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:13,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013275032] [2024-06-04 15:30:13,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:13,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:13,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:13,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:13,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:14,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:14,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 226 transitions, 2613 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:14,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:14,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:14,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:14,418 INFO L124 PetriNetUnfolderBase]: 461/871 cut-off events. [2024-06-04 15:30:14,418 INFO L125 PetriNetUnfolderBase]: For 68753/68756 co-relation queries the response was YES. [2024-06-04 15:30:14,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6809 conditions, 871 events. 461/871 cut-off events. For 68753/68756 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4534 event pairs, 37 based on Foata normal form. 1/867 useless extension candidates. Maximal degree in co-relation 6693. Up to 572 conditions per place. [2024-06-04 15:30:14,425 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 150 selfloop transitions, 93 changer transitions 0/246 dead transitions. [2024-06-04 15:30:14,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 246 transitions, 3380 flow [2024-06-04 15:30:14,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:14,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-04 15:30:14,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:30:14,426 INFO L175 Difference]: Start difference. First operand has 240 places, 226 transitions, 2613 flow. Second operand 10 states and 128 transitions. [2024-06-04 15:30:14,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 246 transitions, 3380 flow [2024-06-04 15:30:14,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 246 transitions, 3235 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-04 15:30:14,621 INFO L231 Difference]: Finished difference. Result has 240 places, 231 transitions, 2744 flow [2024-06-04 15:30:14,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2744, PETRI_PLACES=240, PETRI_TRANSITIONS=231} [2024-06-04 15:30:14,622 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-04 15:30:14,622 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 231 transitions, 2744 flow [2024-06-04 15:30:14,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:14,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:14,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:14,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 15:30:14,622 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:14,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:14,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1345157148, now seen corresponding path program 17 times [2024-06-04 15:30:14,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:14,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38045043] [2024-06-04 15:30:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:14,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:15,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:15,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38045043] [2024-06-04 15:30:15,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38045043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:15,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:15,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:15,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908324600] [2024-06-04 15:30:15,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:15,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:15,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:15,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:15,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:15,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:15,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 231 transitions, 2744 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:15,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:15,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:15,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:16,287 INFO L124 PetriNetUnfolderBase]: 459/870 cut-off events. [2024-06-04 15:30:16,287 INFO L125 PetriNetUnfolderBase]: For 67898/67901 co-relation queries the response was YES. [2024-06-04 15:30:16,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6774 conditions, 870 events. 459/870 cut-off events. For 67898/67901 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4528 event pairs, 37 based on Foata normal form. 1/866 useless extension candidates. Maximal degree in co-relation 6658. Up to 570 conditions per place. [2024-06-04 15:30:16,294 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 91 changer transitions 0/245 dead transitions. [2024-06-04 15:30:16,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 245 transitions, 3292 flow [2024-06-04 15:30:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-04 15:30:16,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:30:16,295 INFO L175 Difference]: Start difference. First operand has 240 places, 231 transitions, 2744 flow. Second operand 10 states and 128 transitions. [2024-06-04 15:30:16,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 245 transitions, 3292 flow [2024-06-04 15:30:16,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 245 transitions, 3045 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:16,500 INFO L231 Difference]: Finished difference. Result has 244 places, 231 transitions, 2684 flow [2024-06-04 15:30:16,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2497, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2684, PETRI_PLACES=244, PETRI_TRANSITIONS=231} [2024-06-04 15:30:16,501 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-04 15:30:16,501 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 231 transitions, 2684 flow [2024-06-04 15:30:16,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:16,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:16,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:16,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 15:30:16,502 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:16,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:16,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1195586245, now seen corresponding path program 1 times [2024-06-04 15:30:16,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:16,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531392848] [2024-06-04 15:30:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:16,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:17,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:17,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531392848] [2024-06-04 15:30:17,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531392848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:17,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:17,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:17,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407408279] [2024-06-04 15:30:17,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:17,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:17,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:17,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:17,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:17,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:17,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 231 transitions, 2684 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:17,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:17,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:17,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:18,078 INFO L124 PetriNetUnfolderBase]: 463/877 cut-off events. [2024-06-04 15:30:18,078 INFO L125 PetriNetUnfolderBase]: For 72214/72214 co-relation queries the response was YES. [2024-06-04 15:30:18,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6791 conditions, 877 events. 463/877 cut-off events. For 72214/72214 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4582 event pairs, 11 based on Foata normal form. 2/877 useless extension candidates. Maximal degree in co-relation 6674. Up to 729 conditions per place. [2024-06-04 15:30:18,084 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 231 selfloop transitions, 19 changer transitions 0/253 dead transitions. [2024-06-04 15:30:18,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 253 transitions, 3268 flow [2024-06-04 15:30:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:18,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:30:18,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 15:30:18,085 INFO L175 Difference]: Start difference. First operand has 244 places, 231 transitions, 2684 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:30:18,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 253 transitions, 3268 flow [2024-06-04 15:30:18,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 253 transitions, 3097 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:18,297 INFO L231 Difference]: Finished difference. Result has 247 places, 232 transitions, 2583 flow [2024-06-04 15:30:18,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2513, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2583, PETRI_PLACES=247, PETRI_TRANSITIONS=232} [2024-06-04 15:30:18,297 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-04 15:30:18,297 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 232 transitions, 2583 flow [2024-06-04 15:30:18,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:18,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:18,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:18,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 15:30:18,298 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:18,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:18,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1579348699, now seen corresponding path program 2 times [2024-06-04 15:30:18,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:18,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056459225] [2024-06-04 15:30:18,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:18,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:19,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:19,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056459225] [2024-06-04 15:30:19,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056459225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:19,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:19,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:19,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396548529] [2024-06-04 15:30:19,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:19,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:19,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:19,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:19,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:19,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:19,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 232 transitions, 2583 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:19,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:19,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:19,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:20,078 INFO L124 PetriNetUnfolderBase]: 467/883 cut-off events. [2024-06-04 15:30:20,079 INFO L125 PetriNetUnfolderBase]: For 73820/73820 co-relation queries the response was YES. [2024-06-04 15:30:20,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6759 conditions, 883 events. 467/883 cut-off events. For 73820/73820 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4630 event pairs, 29 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 6641. Up to 759 conditions per place. [2024-06-04 15:30:20,087 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 228 selfloop transitions, 21 changer transitions 0/252 dead transitions. [2024-06-04 15:30:20,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 252 transitions, 3163 flow [2024-06-04 15:30:20,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:20,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:20,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:30:20,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:30:20,088 INFO L175 Difference]: Start difference. First operand has 247 places, 232 transitions, 2583 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:30:20,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 252 transitions, 3163 flow [2024-06-04 15:30:20,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 252 transitions, 3103 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:20,271 INFO L231 Difference]: Finished difference. Result has 249 places, 233 transitions, 2599 flow [2024-06-04 15:30:20,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2523, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2599, PETRI_PLACES=249, PETRI_TRANSITIONS=233} [2024-06-04 15:30:20,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-04 15:30:20,272 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 233 transitions, 2599 flow [2024-06-04 15:30:20,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:20,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:20,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:20,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 15:30:20,272 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:20,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:20,272 INFO L85 PathProgramCache]: Analyzing trace with hash -633403039, now seen corresponding path program 3 times [2024-06-04 15:30:20,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:20,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396421151] [2024-06-04 15:30:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:20,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:21,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:21,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396421151] [2024-06-04 15:30:21,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396421151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:21,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:21,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:21,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653910237] [2024-06-04 15:30:21,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:21,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:21,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:21,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:21,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:21,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:21,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 233 transitions, 2599 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:21,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:21,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:21,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:21,813 INFO L124 PetriNetUnfolderBase]: 471/891 cut-off events. [2024-06-04 15:30:21,814 INFO L125 PetriNetUnfolderBase]: For 77122/77122 co-relation queries the response was YES. [2024-06-04 15:30:21,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6821 conditions, 891 events. 471/891 cut-off events. For 77122/77122 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4680 event pairs, 27 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 6702. Up to 762 conditions per place. [2024-06-04 15:30:21,820 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 231 selfloop transitions, 20 changer transitions 0/254 dead transitions. [2024-06-04 15:30:21,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 254 transitions, 3187 flow [2024-06-04 15:30:21,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:21,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:30:21,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:30:21,821 INFO L175 Difference]: Start difference. First operand has 249 places, 233 transitions, 2599 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:30:21,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 254 transitions, 3187 flow [2024-06-04 15:30:22,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 254 transitions, 3121 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:22,021 INFO L231 Difference]: Finished difference. Result has 251 places, 234 transitions, 2609 flow [2024-06-04 15:30:22,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2609, PETRI_PLACES=251, PETRI_TRANSITIONS=234} [2024-06-04 15:30:22,022 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-04 15:30:22,022 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 234 transitions, 2609 flow [2024-06-04 15:30:22,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:22,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:22,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:22,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 15:30:22,023 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:22,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:22,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1262142005, now seen corresponding path program 4 times [2024-06-04 15:30:22,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:22,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477836405] [2024-06-04 15:30:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:22,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:23,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:23,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477836405] [2024-06-04 15:30:23,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477836405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:23,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:23,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:23,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195846113] [2024-06-04 15:30:23,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:23,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:23,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:23,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:23,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:23,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:23,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 234 transitions, 2609 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:23,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:23,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:23,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:23,803 INFO L124 PetriNetUnfolderBase]: 475/899 cut-off events. [2024-06-04 15:30:23,804 INFO L125 PetriNetUnfolderBase]: For 79182/79182 co-relation queries the response was YES. [2024-06-04 15:30:23,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6881 conditions, 899 events. 475/899 cut-off events. For 79182/79182 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4735 event pairs, 29 based on Foata normal form. 2/899 useless extension candidates. Maximal degree in co-relation 6761. Up to 769 conditions per place. [2024-06-04 15:30:23,811 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 222 selfloop transitions, 26 changer transitions 0/251 dead transitions. [2024-06-04 15:30:23,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 251 transitions, 3181 flow [2024-06-04 15:30:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:30:23,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 15:30:23,812 INFO L175 Difference]: Start difference. First operand has 251 places, 234 transitions, 2609 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:30:23,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 251 transitions, 3181 flow [2024-06-04 15:30:24,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 251 transitions, 3115 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:24,007 INFO L231 Difference]: Finished difference. Result has 253 places, 235 transitions, 2633 flow [2024-06-04 15:30:24,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2633, PETRI_PLACES=253, PETRI_TRANSITIONS=235} [2024-06-04 15:30:24,007 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-04 15:30:24,007 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 235 transitions, 2633 flow [2024-06-04 15:30:24,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:24,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:24,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:24,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 15:30:24,008 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:24,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:24,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1267504385, now seen corresponding path program 5 times [2024-06-04 15:30:24,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:24,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60766110] [2024-06-04 15:30:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:24,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:25,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:25,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60766110] [2024-06-04 15:30:25,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60766110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:25,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:25,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:25,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437315424] [2024-06-04 15:30:25,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:25,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:25,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:25,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:25,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:25,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:25,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 235 transitions, 2633 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:25,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:25,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:25,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:25,842 INFO L124 PetriNetUnfolderBase]: 479/907 cut-off events. [2024-06-04 15:30:25,842 INFO L125 PetriNetUnfolderBase]: For 81252/81252 co-relation queries the response was YES. [2024-06-04 15:30:25,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6952 conditions, 907 events. 479/907 cut-off events. For 81252/81252 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4809 event pairs, 31 based on Foata normal form. 2/907 useless extension candidates. Maximal degree in co-relation 6831. Up to 785 conditions per place. [2024-06-04 15:30:25,849 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 24 changer transitions 0/253 dead transitions. [2024-06-04 15:30:25,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 253 transitions, 3222 flow [2024-06-04 15:30:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:25,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 15:30:25,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 15:30:25,850 INFO L175 Difference]: Start difference. First operand has 253 places, 235 transitions, 2633 flow. Second operand 10 states and 121 transitions. [2024-06-04 15:30:25,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 253 transitions, 3222 flow [2024-06-04 15:30:26,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 253 transitions, 3140 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:26,068 INFO L231 Difference]: Finished difference. Result has 256 places, 237 transitions, 2656 flow [2024-06-04 15:30:26,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2553, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2656, PETRI_PLACES=256, PETRI_TRANSITIONS=237} [2024-06-04 15:30:26,068 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-04 15:30:26,068 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 237 transitions, 2656 flow [2024-06-04 15:30:26,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:26,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:26,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:26,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 15:30:26,069 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:26,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:26,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1267652255, now seen corresponding path program 6 times [2024-06-04 15:30:26,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:26,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087181365] [2024-06-04 15:30:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:26,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:27,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:27,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087181365] [2024-06-04 15:30:27,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087181365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:27,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:27,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:27,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335544366] [2024-06-04 15:30:27,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:27,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:27,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:27,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:27,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:27,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:27,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 237 transitions, 2656 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:27,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:27,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:27,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:27,747 INFO L124 PetriNetUnfolderBase]: 483/915 cut-off events. [2024-06-04 15:30:27,747 INFO L125 PetriNetUnfolderBase]: For 83349/83349 co-relation queries the response was YES. [2024-06-04 15:30:27,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7015 conditions, 915 events. 483/915 cut-off events. For 83349/83349 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4862 event pairs, 29 based on Foata normal form. 2/915 useless extension candidates. Maximal degree in co-relation 6892. Up to 788 conditions per place. [2024-06-04 15:30:27,754 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 229 selfloop transitions, 23 changer transitions 0/255 dead transitions. [2024-06-04 15:30:27,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 255 transitions, 3242 flow [2024-06-04 15:30:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:27,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 15:30:27,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 15:30:27,755 INFO L175 Difference]: Start difference. First operand has 256 places, 237 transitions, 2656 flow. Second operand 10 states and 121 transitions. [2024-06-04 15:30:27,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 255 transitions, 3242 flow [2024-06-04 15:30:27,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 255 transitions, 3168 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:27,950 INFO L231 Difference]: Finished difference. Result has 259 places, 238 transitions, 2670 flow [2024-06-04 15:30:27,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2670, PETRI_PLACES=259, PETRI_TRANSITIONS=238} [2024-06-04 15:30:27,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-04 15:30:27,950 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 238 transitions, 2670 flow [2024-06-04 15:30:27,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:27,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:27,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:27,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 15:30:27,951 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:27,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:27,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1262136053, now seen corresponding path program 1 times [2024-06-04 15:30:27,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:27,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915187810] [2024-06-04 15:30:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:27,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:29,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:29,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915187810] [2024-06-04 15:30:29,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915187810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:29,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:29,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:29,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114999918] [2024-06-04 15:30:29,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:29,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:29,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:29,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:29,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:29,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:29,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 238 transitions, 2670 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:29,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:29,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:29,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:30,259 INFO L124 PetriNetUnfolderBase]: 486/920 cut-off events. [2024-06-04 15:30:30,259 INFO L125 PetriNetUnfolderBase]: For 81991/81991 co-relation queries the response was YES. [2024-06-04 15:30:30,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7047 conditions, 920 events. 486/920 cut-off events. For 81991/81991 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4889 event pairs, 31 based on Foata normal form. 1/919 useless extension candidates. Maximal degree in co-relation 6923. Up to 781 conditions per place. [2024-06-04 15:30:30,269 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 222 selfloop transitions, 33 changer transitions 0/258 dead transitions. [2024-06-04 15:30:30,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 258 transitions, 3305 flow [2024-06-04 15:30:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:30,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:30,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:30:30,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 15:30:30,270 INFO L175 Difference]: Start difference. First operand has 259 places, 238 transitions, 2670 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:30:30,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 258 transitions, 3305 flow [2024-06-04 15:30:30,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 258 transitions, 3227 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:30,482 INFO L231 Difference]: Finished difference. Result has 263 places, 242 transitions, 2761 flow [2024-06-04 15:30:30,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2592, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2761, PETRI_PLACES=263, PETRI_TRANSITIONS=242} [2024-06-04 15:30:30,482 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-04 15:30:30,482 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 242 transitions, 2761 flow [2024-06-04 15:30:30,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:30,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:30,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:30,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 15:30:30,483 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:30,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:30,483 INFO L85 PathProgramCache]: Analyzing trace with hash 907366275, now seen corresponding path program 2 times [2024-06-04 15:30:30,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:30,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949391704] [2024-06-04 15:30:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:30,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:31,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:31,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949391704] [2024-06-04 15:30:31,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949391704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:31,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:31,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:31,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592391654] [2024-06-04 15:30:31,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:31,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:31,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:31,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:31,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:31,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:31,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 242 transitions, 2761 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:31,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:31,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:31,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:32,342 INFO L124 PetriNetUnfolderBase]: 484/917 cut-off events. [2024-06-04 15:30:32,342 INFO L125 PetriNetUnfolderBase]: For 80294/80294 co-relation queries the response was YES. [2024-06-04 15:30:32,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6940 conditions, 917 events. 484/917 cut-off events. For 80294/80294 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4882 event pairs, 31 based on Foata normal form. 1/916 useless extension candidates. Maximal degree in co-relation 6814. Up to 766 conditions per place. [2024-06-04 15:30:32,349 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 39 changer transitions 0/258 dead transitions. [2024-06-04 15:30:32,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 258 transitions, 3315 flow [2024-06-04 15:30:32,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:32,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 15:30:32,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 15:30:32,350 INFO L175 Difference]: Start difference. First operand has 263 places, 242 transitions, 2761 flow. Second operand 11 states and 136 transitions. [2024-06-04 15:30:32,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 258 transitions, 3315 flow [2024-06-04 15:30:32,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 258 transitions, 3177 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:32,580 INFO L231 Difference]: Finished difference. Result has 267 places, 242 transitions, 2706 flow [2024-06-04 15:30:32,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2706, PETRI_PLACES=267, PETRI_TRANSITIONS=242} [2024-06-04 15:30:32,580 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-04 15:30:32,581 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 242 transitions, 2706 flow [2024-06-04 15:30:32,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:32,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:32,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:32,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 15:30:32,581 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:32,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:32,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1261926524, now seen corresponding path program 1 times [2024-06-04 15:30:32,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:32,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210075614] [2024-06-04 15:30:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:32,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:33,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:33,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210075614] [2024-06-04 15:30:33,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210075614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:33,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:33,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:33,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260679030] [2024-06-04 15:30:33,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:33,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:33,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:33,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:33,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:33,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:33,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 242 transitions, 2706 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:33,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:33,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:33,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:34,428 INFO L124 PetriNetUnfolderBase]: 500/953 cut-off events. [2024-06-04 15:30:34,428 INFO L125 PetriNetUnfolderBase]: For 111103/111103 co-relation queries the response was YES. [2024-06-04 15:30:34,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7113 conditions, 953 events. 500/953 cut-off events. For 111103/111103 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5130 event pairs, 35 based on Foata normal form. 10/961 useless extension candidates. Maximal degree in co-relation 6986. Up to 782 conditions per place. [2024-06-04 15:30:34,436 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 226 selfloop transitions, 30 changer transitions 4/263 dead transitions. [2024-06-04 15:30:34,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 263 transitions, 3356 flow [2024-06-04 15:30:34,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:34,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:30:34,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:30:34,437 INFO L175 Difference]: Start difference. First operand has 267 places, 242 transitions, 2706 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:30:34,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 263 transitions, 3356 flow [2024-06-04 15:30:34,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 263 transitions, 3238 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:30:34,654 INFO L231 Difference]: Finished difference. Result has 267 places, 242 transitions, 2661 flow [2024-06-04 15:30:34,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2661, PETRI_PLACES=267, PETRI_TRANSITIONS=242} [2024-06-04 15:30:34,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-04 15:30:34,655 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 242 transitions, 2661 flow [2024-06-04 15:30:34,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:34,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:34,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:34,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 15:30:34,655 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:34,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:34,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2040926931, now seen corresponding path program 7 times [2024-06-04 15:30:34,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:34,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182020650] [2024-06-04 15:30:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:34,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:35,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182020650] [2024-06-04 15:30:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182020650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:35,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:35,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:35,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823920266] [2024-06-04 15:30:35,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:35,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:35,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:35,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:35,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:36,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:36,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 242 transitions, 2661 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:36,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:36,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:36,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:36,476 INFO L124 PetriNetUnfolderBase]: 498/951 cut-off events. [2024-06-04 15:30:36,476 INFO L125 PetriNetUnfolderBase]: For 88274/88274 co-relation queries the response was YES. [2024-06-04 15:30:36,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7120 conditions, 951 events. 498/951 cut-off events. For 88274/88274 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5126 event pairs, 39 based on Foata normal form. 2/951 useless extension candidates. Maximal degree in co-relation 6992. Up to 820 conditions per place. [2024-06-04 15:30:36,485 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 227 selfloop transitions, 27 changer transitions 0/257 dead transitions. [2024-06-04 15:30:36,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 257 transitions, 3248 flow [2024-06-04 15:30:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 15:30:36,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 15:30:36,486 INFO L175 Difference]: Start difference. First operand has 267 places, 242 transitions, 2661 flow. Second operand 10 states and 121 transitions. [2024-06-04 15:30:36,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 257 transitions, 3248 flow [2024-06-04 15:30:36,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 257 transitions, 3175 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 15:30:36,718 INFO L231 Difference]: Finished difference. Result has 269 places, 244 transitions, 2700 flow [2024-06-04 15:30:36,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2700, PETRI_PLACES=269, PETRI_TRANSITIONS=244} [2024-06-04 15:30:36,719 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-04 15:30:36,719 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 244 transitions, 2700 flow [2024-06-04 15:30:36,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:36,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:36,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:36,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 15:30:36,720 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:36,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:36,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2040779061, now seen corresponding path program 8 times [2024-06-04 15:30:36,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:36,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280382362] [2024-06-04 15:30:36,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:36,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:37,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:37,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280382362] [2024-06-04 15:30:37,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280382362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:37,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:37,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:37,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804137045] [2024-06-04 15:30:37,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:37,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:37,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:37,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:37,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:38,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:38,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 244 transitions, 2700 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:38,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:38,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:38,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:38,444 INFO L124 PetriNetUnfolderBase]: 502/959 cut-off events. [2024-06-04 15:30:38,444 INFO L125 PetriNetUnfolderBase]: For 90987/90987 co-relation queries the response was YES. [2024-06-04 15:30:38,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7224 conditions, 959 events. 502/959 cut-off events. For 90987/90987 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5195 event pairs, 37 based on Foata normal form. 2/959 useless extension candidates. Maximal degree in co-relation 7094. Up to 823 conditions per place. [2024-06-04 15:30:38,453 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 230 selfloop transitions, 26 changer transitions 0/259 dead transitions. [2024-06-04 15:30:38,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 259 transitions, 3286 flow [2024-06-04 15:30:38,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:38,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 15:30:38,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 15:30:38,454 INFO L175 Difference]: Start difference. First operand has 269 places, 244 transitions, 2700 flow. Second operand 10 states and 121 transitions. [2024-06-04 15:30:38,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 259 transitions, 3286 flow [2024-06-04 15:30:38,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 259 transitions, 3201 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:38,727 INFO L231 Difference]: Finished difference. Result has 272 places, 245 transitions, 2713 flow [2024-06-04 15:30:38,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2615, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2713, PETRI_PLACES=272, PETRI_TRANSITIONS=245} [2024-06-04 15:30:38,728 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-04 15:30:38,728 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 245 transitions, 2713 flow [2024-06-04 15:30:38,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:38,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:38,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:38,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 15:30:38,729 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:38,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:38,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1747004371, now seen corresponding path program 9 times [2024-06-04 15:30:38,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:38,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081013999] [2024-06-04 15:30:38,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:38,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:40,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:40,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081013999] [2024-06-04 15:30:40,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081013999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:40,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:40,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:40,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702943468] [2024-06-04 15:30:40,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:40,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:40,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:40,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:40,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:40,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:40,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 245 transitions, 2713 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:40,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:40,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:40,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:40,582 INFO L124 PetriNetUnfolderBase]: 506/967 cut-off events. [2024-06-04 15:30:40,582 INFO L125 PetriNetUnfolderBase]: For 93343/93343 co-relation queries the response was YES. [2024-06-04 15:30:40,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 967 events. 506/967 cut-off events. For 93343/93343 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5254 event pairs, 39 based on Foata normal form. 2/967 useless extension candidates. Maximal degree in co-relation 7154. Up to 830 conditions per place. [2024-06-04 15:30:40,590 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 30 changer transitions 0/259 dead transitions. [2024-06-04 15:30:40,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 259 transitions, 3299 flow [2024-06-04 15:30:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:30:40,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 15:30:40,591 INFO L175 Difference]: Start difference. First operand has 272 places, 245 transitions, 2713 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:30:40,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 259 transitions, 3299 flow [2024-06-04 15:30:40,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 259 transitions, 3211 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:40,870 INFO L231 Difference]: Finished difference. Result has 274 places, 246 transitions, 2733 flow [2024-06-04 15:30:40,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2625, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2733, PETRI_PLACES=274, PETRI_TRANSITIONS=246} [2024-06-04 15:30:40,871 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-04 15:30:40,871 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 246 transitions, 2733 flow [2024-06-04 15:30:40,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:40,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:40,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:40,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 15:30:40,871 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:40,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:40,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1940943781, now seen corresponding path program 10 times [2024-06-04 15:30:40,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:40,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059735027] [2024-06-04 15:30:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:40,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:41,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:41,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:41,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059735027] [2024-06-04 15:30:41,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059735027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:41,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:41,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:41,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891112766] [2024-06-04 15:30:41,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:41,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:41,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:41,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:41,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:42,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:42,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 246 transitions, 2733 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:42,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:42,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:42,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:42,483 INFO L124 PetriNetUnfolderBase]: 510/975 cut-off events. [2024-06-04 15:30:42,483 INFO L125 PetriNetUnfolderBase]: For 95763/95763 co-relation queries the response was YES. [2024-06-04 15:30:42,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7352 conditions, 975 events. 510/975 cut-off events. For 95763/95763 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5300 event pairs, 39 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 7220. Up to 816 conditions per place. [2024-06-04 15:30:42,492 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 218 selfloop transitions, 39 changer transitions 0/260 dead transitions. [2024-06-04 15:30:42,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 260 transitions, 3323 flow [2024-06-04 15:30:42,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:42,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:30:42,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 15:30:42,493 INFO L175 Difference]: Start difference. First operand has 274 places, 246 transitions, 2733 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:30:42,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 260 transitions, 3323 flow [2024-06-04 15:30:42,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 260 transitions, 3225 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:42,775 INFO L231 Difference]: Finished difference. Result has 276 places, 247 transitions, 2763 flow [2024-06-04 15:30:42,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2635, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2763, PETRI_PLACES=276, PETRI_TRANSITIONS=247} [2024-06-04 15:30:42,775 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-04 15:30:42,775 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 247 transitions, 2763 flow [2024-06-04 15:30:42,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:42,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:42,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:42,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 15:30:42,776 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:42,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:42,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1747010323, now seen corresponding path program 3 times [2024-06-04 15:30:42,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:42,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871625010] [2024-06-04 15:30:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:42,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:44,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:44,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871625010] [2024-06-04 15:30:44,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871625010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:44,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:44,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:44,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519561007] [2024-06-04 15:30:44,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:44,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:44,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:44,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:44,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:45,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:45,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 247 transitions, 2763 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:45,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:45,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:45,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:45,736 INFO L124 PetriNetUnfolderBase]: 513/980 cut-off events. [2024-06-04 15:30:45,736 INFO L125 PetriNetUnfolderBase]: For 93571/93571 co-relation queries the response was YES. [2024-06-04 15:30:45,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7383 conditions, 980 events. 513/980 cut-off events. For 93571/93571 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5368 event pairs, 39 based on Foata normal form. 1/979 useless extension candidates. Maximal degree in co-relation 7250. Up to 816 conditions per place. [2024-06-04 15:30:45,745 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 223 selfloop transitions, 37 changer transitions 0/263 dead transitions. [2024-06-04 15:30:45,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 263 transitions, 3371 flow [2024-06-04 15:30:45,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:45,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 15:30:45,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 15:30:45,746 INFO L175 Difference]: Start difference. First operand has 276 places, 247 transitions, 2763 flow. Second operand 11 states and 136 transitions. [2024-06-04 15:30:45,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 263 transitions, 3371 flow [2024-06-04 15:30:46,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 263 transitions, 3253 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:46,030 INFO L231 Difference]: Finished difference. Result has 279 places, 249 transitions, 2780 flow [2024-06-04 15:30:46,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2780, PETRI_PLACES=279, PETRI_TRANSITIONS=249} [2024-06-04 15:30:46,031 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-04 15:30:46,031 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 249 transitions, 2780 flow [2024-06-04 15:30:46,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:46,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:46,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:46,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 15:30:46,031 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:46,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:46,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1948568572, now seen corresponding path program 2 times [2024-06-04 15:30:46,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:46,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818838093] [2024-06-04 15:30:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:46,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:47,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:47,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818838093] [2024-06-04 15:30:47,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818838093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:47,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:47,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:47,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806627377] [2024-06-04 15:30:47,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:47,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:47,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:47,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:47,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:47,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:47,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 249 transitions, 2780 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:47,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:47,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:47,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:47,990 INFO L124 PetriNetUnfolderBase]: 520/993 cut-off events. [2024-06-04 15:30:47,990 INFO L125 PetriNetUnfolderBase]: For 98706/98706 co-relation queries the response was YES. [2024-06-04 15:30:47,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7398 conditions, 993 events. 520/993 cut-off events. For 98706/98706 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5429 event pairs, 39 based on Foata normal form. 2/993 useless extension candidates. Maximal degree in co-relation 7264. Up to 798 conditions per place. [2024-06-04 15:30:47,998 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 57 changer transitions 0/268 dead transitions. [2024-06-04 15:30:47,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 268 transitions, 3400 flow [2024-06-04 15:30:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:47,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 15:30:48,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 15:30:48,000 INFO L175 Difference]: Start difference. First operand has 279 places, 249 transitions, 2780 flow. Second operand 11 states and 137 transitions. [2024-06-04 15:30:48,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 268 transitions, 3400 flow [2024-06-04 15:30:48,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 268 transitions, 3285 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-04 15:30:48,283 INFO L231 Difference]: Finished difference. Result has 281 places, 254 transitions, 2841 flow [2024-06-04 15:30:48,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2841, PETRI_PLACES=281, PETRI_TRANSITIONS=254} [2024-06-04 15:30:48,284 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-04 15:30:48,284 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 254 transitions, 2841 flow [2024-06-04 15:30:48,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:48,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:48,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:48,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 15:30:48,285 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:48,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:48,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1747219852, now seen corresponding path program 3 times [2024-06-04 15:30:48,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:48,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061409865] [2024-06-04 15:30:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:48,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:49,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:49,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:49,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061409865] [2024-06-04 15:30:49,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061409865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:49,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:49,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:49,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951022452] [2024-06-04 15:30:49,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:49,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:49,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:49,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:49,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:50,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:50,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 254 transitions, 2841 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:50,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:50,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:50,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:50,540 INFO L124 PetriNetUnfolderBase]: 536/1029 cut-off events. [2024-06-04 15:30:50,540 INFO L125 PetriNetUnfolderBase]: For 131539/131539 co-relation queries the response was YES. [2024-06-04 15:30:50,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7673 conditions, 1029 events. 536/1029 cut-off events. For 131539/131539 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5708 event pairs, 43 based on Foata normal form. 10/1037 useless extension candidates. Maximal degree in co-relation 7538. Up to 851 conditions per place. [2024-06-04 15:30:50,548 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 33 changer transitions 4/272 dead transitions. [2024-06-04 15:30:50,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 272 transitions, 3501 flow [2024-06-04 15:30:50,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:50,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:50,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:30:50,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:30:50,549 INFO L175 Difference]: Start difference. First operand has 281 places, 254 transitions, 2841 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:30:50,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 272 transitions, 3501 flow [2024-06-04 15:30:50,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 272 transitions, 3373 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:50,878 INFO L231 Difference]: Finished difference. Result has 284 places, 254 transitions, 2796 flow [2024-06-04 15:30:50,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2796, PETRI_PLACES=284, PETRI_TRANSITIONS=254} [2024-06-04 15:30:50,878 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-04 15:30:50,878 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 254 transitions, 2796 flow [2024-06-04 15:30:50,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:50,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:50,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:50,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 15:30:50,879 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:50,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:50,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1940949733, now seen corresponding path program 4 times [2024-06-04 15:30:50,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:50,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056557624] [2024-06-04 15:30:50,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:50,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:52,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:52,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056557624] [2024-06-04 15:30:52,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056557624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:52,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:52,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:52,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805843188] [2024-06-04 15:30:52,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:52,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:52,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:52,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:52,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:52,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:52,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 254 transitions, 2796 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:52,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:52,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:52,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:53,463 INFO L124 PetriNetUnfolderBase]: 533/1024 cut-off events. [2024-06-04 15:30:53,464 INFO L125 PetriNetUnfolderBase]: For 99700/99700 co-relation queries the response was YES. [2024-06-04 15:30:53,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7579 conditions, 1024 events. 533/1024 cut-off events. For 99700/99700 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5687 event pairs, 43 based on Foata normal form. 1/1023 useless extension candidates. Maximal degree in co-relation 7445. Up to 802 conditions per place. [2024-06-04 15:30:53,473 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 59 changer transitions 0/272 dead transitions. [2024-06-04 15:30:53,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 272 transitions, 3444 flow [2024-06-04 15:30:53,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 15:30:53,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 15:30:53,474 INFO L175 Difference]: Start difference. First operand has 284 places, 254 transitions, 2796 flow. Second operand 11 states and 137 transitions. [2024-06-04 15:30:53,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 272 transitions, 3444 flow [2024-06-04 15:30:53,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 272 transitions, 3365 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 15:30:53,782 INFO L231 Difference]: Finished difference. Result has 287 places, 258 transitions, 2952 flow [2024-06-04 15:30:53,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2952, PETRI_PLACES=287, PETRI_TRANSITIONS=258} [2024-06-04 15:30:53,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-04 15:30:53,782 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 258 transitions, 2952 flow [2024-06-04 15:30:53,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:53,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:53,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:53,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 15:30:53,783 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:53,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:53,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1941159262, now seen corresponding path program 4 times [2024-06-04 15:30:53,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:53,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878249061] [2024-06-04 15:30:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:53,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:54,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:54,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878249061] [2024-06-04 15:30:54,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878249061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:54,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:54,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:54,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619311138] [2024-06-04 15:30:54,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:54,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:54,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:54,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:54,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:55,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:55,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 258 transitions, 2952 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:55,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:55,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:55,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:55,500 INFO L124 PetriNetUnfolderBase]: 537/1032 cut-off events. [2024-06-04 15:30:55,500 INFO L125 PetriNetUnfolderBase]: For 106187/106187 co-relation queries the response was YES. [2024-06-04 15:30:55,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7759 conditions, 1032 events. 537/1032 cut-off events. For 106187/106187 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5750 event pairs, 45 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 7623. Up to 858 conditions per place. [2024-06-04 15:30:55,511 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 44 changer transitions 0/274 dead transitions. [2024-06-04 15:30:55,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 274 transitions, 3565 flow [2024-06-04 15:30:55,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:55,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:55,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:30:55,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 15:30:55,512 INFO L175 Difference]: Start difference. First operand has 287 places, 258 transitions, 2952 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:30:55,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 274 transitions, 3565 flow [2024-06-04 15:30:55,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 274 transitions, 3365 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:55,820 INFO L231 Difference]: Finished difference. Result has 290 places, 260 transitions, 2883 flow [2024-06-04 15:30:55,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2883, PETRI_PLACES=290, PETRI_TRANSITIONS=260} [2024-06-04 15:30:55,820 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-04 15:30:55,820 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 260 transitions, 2883 flow [2024-06-04 15:30:55,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:55,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:55,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:55,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 15:30:55,820 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:55,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:55,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1948577872, now seen corresponding path program 5 times [2024-06-04 15:30:55,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:55,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140475502] [2024-06-04 15:30:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:55,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:57,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:57,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140475502] [2024-06-04 15:30:57,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140475502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:57,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:57,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:57,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325617051] [2024-06-04 15:30:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:57,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:57,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:57,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:57,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:57,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:57,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 260 transitions, 2883 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:57,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:57,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:57,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:57,848 INFO L124 PetriNetUnfolderBase]: 548/1053 cut-off events. [2024-06-04 15:30:57,848 INFO L125 PetriNetUnfolderBase]: For 116775/116775 co-relation queries the response was YES. [2024-06-04 15:30:57,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8031 conditions, 1053 events. 548/1053 cut-off events. For 116775/116775 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5874 event pairs, 44 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 7895. Up to 773 conditions per place. [2024-06-04 15:30:57,860 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 62 changer transitions 2/280 dead transitions. [2024-06-04 15:30:57,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 280 transitions, 3753 flow [2024-06-04 15:30:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 15:30:57,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 15:30:57,861 INFO L175 Difference]: Start difference. First operand has 290 places, 260 transitions, 2883 flow. Second operand 11 states and 140 transitions. [2024-06-04 15:30:57,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 280 transitions, 3753 flow [2024-06-04 15:30:58,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 280 transitions, 3664 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:58,181 INFO L231 Difference]: Finished difference. Result has 294 places, 262 transitions, 2972 flow [2024-06-04 15:30:58,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2972, PETRI_PLACES=294, PETRI_TRANSITIONS=262} [2024-06-04 15:30:58,181 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-04 15:30:58,182 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 262 transitions, 2972 flow [2024-06-04 15:30:58,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:58,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:58,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:58,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 15:30:58,182 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:30:58,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:58,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1747212133, now seen corresponding path program 5 times [2024-06-04 15:30:58,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:58,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780908500] [2024-06-04 15:30:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:58,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:59,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:59,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780908500] [2024-06-04 15:30:59,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780908500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:59,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:59,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:59,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106365573] [2024-06-04 15:30:59,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:59,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:59,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:59,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:59,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:59,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:30:59,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 262 transitions, 2972 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:59,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:59,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:30:59,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:00,363 INFO L124 PetriNetUnfolderBase]: 546/1050 cut-off events. [2024-06-04 15:31:00,363 INFO L125 PetriNetUnfolderBase]: For 110426/110426 co-relation queries the response was YES. [2024-06-04 15:31:00,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7967 conditions, 1050 events. 546/1050 cut-off events. For 110426/110426 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5860 event pairs, 46 based on Foata normal form. 1/1049 useless extension candidates. Maximal degree in co-relation 7830. Up to 904 conditions per place. [2024-06-04 15:31:00,373 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 235 selfloop transitions, 37 changer transitions 0/275 dead transitions. [2024-06-04 15:31:00,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 275 transitions, 3548 flow [2024-06-04 15:31:00,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:00,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:00,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:31:00,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 15:31:00,374 INFO L175 Difference]: Start difference. First operand has 294 places, 262 transitions, 2972 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:31:00,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 275 transitions, 3548 flow [2024-06-04 15:31:00,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 275 transitions, 3406 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:00,686 INFO L231 Difference]: Finished difference. Result has 298 places, 262 transitions, 2909 flow [2024-06-04 15:31:00,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2830, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2909, PETRI_PLACES=298, PETRI_TRANSITIONS=262} [2024-06-04 15:31:00,687 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-04 15:31:00,687 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 262 transitions, 2909 flow [2024-06-04 15:31:00,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:00,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:00,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:00,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 15:31:00,688 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:00,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:00,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1948301383, now seen corresponding path program 6 times [2024-06-04 15:31:00,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:00,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420276360] [2024-06-04 15:31:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:00,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:02,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:03,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420276360] [2024-06-04 15:31:03,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420276360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:03,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:03,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:03,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472250750] [2024-06-04 15:31:03,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:03,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:03,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:03,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:03,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:03,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:03,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 262 transitions, 2909 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:03,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:03,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:03,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:03,649 INFO L124 PetriNetUnfolderBase]: 544/1047 cut-off events. [2024-06-04 15:31:03,649 INFO L125 PetriNetUnfolderBase]: For 107724/107724 co-relation queries the response was YES. [2024-06-04 15:31:03,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7811 conditions, 1047 events. 544/1047 cut-off events. For 107724/107724 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5849 event pairs, 46 based on Foata normal form. 1/1046 useless extension candidates. Maximal degree in co-relation 7672. Up to 849 conditions per place. [2024-06-04 15:31:03,660 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 61 changer transitions 0/275 dead transitions. [2024-06-04 15:31:03,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 275 transitions, 3485 flow [2024-06-04 15:31:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:03,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:03,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:31:03,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 15:31:03,661 INFO L175 Difference]: Start difference. First operand has 298 places, 262 transitions, 2909 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:31:03,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 275 transitions, 3485 flow [2024-06-04 15:31:04,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 275 transitions, 3327 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-04 15:31:04,058 INFO L231 Difference]: Finished difference. Result has 298 places, 262 transitions, 2878 flow [2024-06-04 15:31:04,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2878, PETRI_PLACES=298, PETRI_TRANSITIONS=262} [2024-06-04 15:31:04,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-04 15:31:04,059 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 262 transitions, 2878 flow [2024-06-04 15:31:04,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:04,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:04,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:04,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 15:31:04,059 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:04,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:04,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1948309102, now seen corresponding path program 6 times [2024-06-04 15:31:04,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:04,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935105547] [2024-06-04 15:31:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:04,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:05,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:05,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935105547] [2024-06-04 15:31:05,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935105547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:05,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:05,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:05,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305842469] [2024-06-04 15:31:05,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:05,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:05,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:05,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:05,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:05,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:05,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 262 transitions, 2878 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:05,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:05,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:05,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:06,439 INFO L124 PetriNetUnfolderBase]: 541/1042 cut-off events. [2024-06-04 15:31:06,439 INFO L125 PetriNetUnfolderBase]: For 105167/105167 co-relation queries the response was YES. [2024-06-04 15:31:06,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7573 conditions, 1042 events. 541/1042 cut-off events. For 105167/105167 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5848 event pairs, 45 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 7434. Up to 868 conditions per place. [2024-06-04 15:31:06,449 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 48 changer transitions 0/276 dead transitions. [2024-06-04 15:31:06,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 276 transitions, 3458 flow [2024-06-04 15:31:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:06,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:31:06,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 15:31:06,450 INFO L175 Difference]: Start difference. First operand has 298 places, 262 transitions, 2878 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:31:06,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 276 transitions, 3458 flow [2024-06-04 15:31:06,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 276 transitions, 3351 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 15:31:06,944 INFO L231 Difference]: Finished difference. Result has 301 places, 262 transitions, 2871 flow [2024-06-04 15:31:06,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2771, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2871, PETRI_PLACES=301, PETRI_TRANSITIONS=262} [2024-06-04 15:31:06,945 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-04 15:31:06,945 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 262 transitions, 2871 flow [2024-06-04 15:31:06,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:06,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:06,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:06,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 15:31:06,945 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:06,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:06,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1941151543, now seen corresponding path program 7 times [2024-06-04 15:31:06,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:06,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153211784] [2024-06-04 15:31:06,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:06,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:08,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:08,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153211784] [2024-06-04 15:31:08,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153211784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:08,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:08,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:08,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76810895] [2024-06-04 15:31:08,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:08,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:08,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:08,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:08,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:08,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:08,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 262 transitions, 2871 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:08,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:08,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:08,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:08,976 INFO L124 PetriNetUnfolderBase]: 539/1039 cut-off events. [2024-06-04 15:31:08,976 INFO L125 PetriNetUnfolderBase]: For 97918/97918 co-relation queries the response was YES. [2024-06-04 15:31:08,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7452 conditions, 1039 events. 539/1039 cut-off events. For 97918/97918 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5830 event pairs, 45 based on Foata normal form. 1/1038 useless extension candidates. Maximal degree in co-relation 7312. Up to 841 conditions per place. [2024-06-04 15:31:08,987 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 217 selfloop transitions, 55 changer transitions 0/275 dead transitions. [2024-06-04 15:31:08,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 275 transitions, 3447 flow [2024-06-04 15:31:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:08,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 15:31:08,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 15:31:08,988 INFO L175 Difference]: Start difference. First operand has 301 places, 262 transitions, 2871 flow. Second operand 11 states and 137 transitions. [2024-06-04 15:31:08,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 275 transitions, 3447 flow [2024-06-04 15:31:09,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 275 transitions, 3282 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-04 15:31:09,354 INFO L231 Difference]: Finished difference. Result has 302 places, 262 transitions, 2821 flow [2024-06-04 15:31:09,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2821, PETRI_PLACES=302, PETRI_TRANSITIONS=262} [2024-06-04 15:31:09,354 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-04 15:31:09,355 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 262 transitions, 2821 flow [2024-06-04 15:31:09,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:09,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:09,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:09,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 15:31:09,355 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:09,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:09,355 INFO L85 PathProgramCache]: Analyzing trace with hash -434259035, now seen corresponding path program 11 times [2024-06-04 15:31:09,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:09,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948441466] [2024-06-04 15:31:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:09,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:10,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:10,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:10,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948441466] [2024-06-04 15:31:10,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948441466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:10,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:10,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:10,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766132703] [2024-06-04 15:31:10,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:10,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:10,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:10,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:10,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:10,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:10,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 262 transitions, 2821 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:10,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:10,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:10,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:11,084 INFO L124 PetriNetUnfolderBase]: 543/1048 cut-off events. [2024-06-04 15:31:11,084 INFO L125 PetriNetUnfolderBase]: For 105132/105135 co-relation queries the response was YES. [2024-06-04 15:31:11,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 1048 events. 543/1048 cut-off events. For 105132/105135 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5890 event pairs, 51 based on Foata normal form. 2/1045 useless extension candidates. Maximal degree in co-relation 7366. Up to 889 conditions per place. [2024-06-04 15:31:11,095 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 233 selfloop transitions, 38 changer transitions 0/274 dead transitions. [2024-06-04 15:31:11,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 274 transitions, 3435 flow [2024-06-04 15:31:11,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:11,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:31:11,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:31:11,096 INFO L175 Difference]: Start difference. First operand has 302 places, 262 transitions, 2821 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:31:11,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 274 transitions, 3435 flow [2024-06-04 15:31:11,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 274 transitions, 3284 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:31:11,530 INFO L231 Difference]: Finished difference. Result has 301 places, 263 transitions, 2798 flow [2024-06-04 15:31:11,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2798, PETRI_PLACES=301, PETRI_TRANSITIONS=263} [2024-06-04 15:31:11,531 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-04 15:31:11,531 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 263 transitions, 2798 flow [2024-06-04 15:31:11,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:11,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:11,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:11,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 15:31:11,531 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:11,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:11,532 INFO L85 PathProgramCache]: Analyzing trace with hash -633560825, now seen corresponding path program 12 times [2024-06-04 15:31:11,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:11,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129386227] [2024-06-04 15:31:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:11,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:12,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:12,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129386227] [2024-06-04 15:31:12,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129386227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:12,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:12,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:12,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319947443] [2024-06-04 15:31:12,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:12,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:12,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:12,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:12,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:13,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:13,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 263 transitions, 2798 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:13,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:13,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:13,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:13,470 INFO L124 PetriNetUnfolderBase]: 547/1056 cut-off events. [2024-06-04 15:31:13,470 INFO L125 PetriNetUnfolderBase]: For 107992/107995 co-relation queries the response was YES. [2024-06-04 15:31:13,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7582 conditions, 1056 events. 547/1056 cut-off events. For 107992/107995 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5951 event pairs, 53 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 7440. Up to 912 conditions per place. [2024-06-04 15:31:13,481 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 241 selfloop transitions, 32 changer transitions 0/276 dead transitions. [2024-06-04 15:31:13,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 276 transitions, 3430 flow [2024-06-04 15:31:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:13,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 15:31:13,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:31:13,482 INFO L175 Difference]: Start difference. First operand has 301 places, 263 transitions, 2798 flow. Second operand 10 states and 120 transitions. [2024-06-04 15:31:13,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 276 transitions, 3430 flow [2024-06-04 15:31:13,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 276 transitions, 3310 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-04 15:31:13,866 INFO L231 Difference]: Finished difference. Result has 304 places, 265 transitions, 2813 flow [2024-06-04 15:31:13,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2680, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2813, PETRI_PLACES=304, PETRI_TRANSITIONS=265} [2024-06-04 15:31:13,866 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-04 15:31:13,866 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 265 transitions, 2813 flow [2024-06-04 15:31:13,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:13,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:13,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:13,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 15:31:13,866 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:13,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:13,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1437620577, now seen corresponding path program 13 times [2024-06-04 15:31:13,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:13,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327731505] [2024-06-04 15:31:13,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:13,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:15,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:15,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327731505] [2024-06-04 15:31:15,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327731505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:15,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:15,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:15,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936563502] [2024-06-04 15:31:15,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:15,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:15,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:15,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:15,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:15,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:15,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 265 transitions, 2813 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:15,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:15,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:15,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:15,506 INFO L124 PetriNetUnfolderBase]: 551/1064 cut-off events. [2024-06-04 15:31:15,506 INFO L125 PetriNetUnfolderBase]: For 110297/110300 co-relation queries the response was YES. [2024-06-04 15:31:15,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7631 conditions, 1064 events. 551/1064 cut-off events. For 110297/110300 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6001 event pairs, 51 based on Foata normal form. 2/1061 useless extension candidates. Maximal degree in co-relation 7487. Up to 915 conditions per place. [2024-06-04 15:31:15,517 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 244 selfloop transitions, 31 changer transitions 0/278 dead transitions. [2024-06-04 15:31:15,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 278 transitions, 3441 flow [2024-06-04 15:31:15,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 15:31:15,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:31:15,518 INFO L175 Difference]: Start difference. First operand has 304 places, 265 transitions, 2813 flow. Second operand 10 states and 120 transitions. [2024-06-04 15:31:15,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 278 transitions, 3441 flow [2024-06-04 15:31:15,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 278 transitions, 3336 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:15,949 INFO L231 Difference]: Finished difference. Result has 307 places, 266 transitions, 2826 flow [2024-06-04 15:31:15,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2826, PETRI_PLACES=307, PETRI_TRANSITIONS=266} [2024-06-04 15:31:15,949 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-04 15:31:15,950 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 266 transitions, 2826 flow [2024-06-04 15:31:15,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:15,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:15,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:15,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 15:31:15,950 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:15,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:15,951 INFO L85 PathProgramCache]: Analyzing trace with hash -628198445, now seen corresponding path program 14 times [2024-06-04 15:31:15,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:15,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299495782] [2024-06-04 15:31:15,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:15,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:17,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:17,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299495782] [2024-06-04 15:31:17,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299495782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:17,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:17,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:17,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367760434] [2024-06-04 15:31:17,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:17,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:17,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:17,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:17,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:17,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:17,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 266 transitions, 2826 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:17,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:17,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:17,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:17,788 INFO L124 PetriNetUnfolderBase]: 555/1072 cut-off events. [2024-06-04 15:31:17,788 INFO L125 PetriNetUnfolderBase]: For 112801/112804 co-relation queries the response was YES. [2024-06-04 15:31:17,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7689 conditions, 1072 events. 555/1072 cut-off events. For 112801/112804 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6085 event pairs, 53 based on Foata normal form. 2/1069 useless extension candidates. Maximal degree in co-relation 7544. Up to 922 conditions per place. [2024-06-04 15:31:17,797 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 240 selfloop transitions, 35 changer transitions 0/278 dead transitions. [2024-06-04 15:31:17,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 278 transitions, 3454 flow [2024-06-04 15:31:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:17,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 15:31:17,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-04 15:31:17,798 INFO L175 Difference]: Start difference. First operand has 307 places, 266 transitions, 2826 flow. Second operand 10 states and 122 transitions. [2024-06-04 15:31:17,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 278 transitions, 3454 flow [2024-06-04 15:31:18,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 278 transitions, 3346 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 15:31:18,325 INFO L231 Difference]: Finished difference. Result has 309 places, 267 transitions, 2846 flow [2024-06-04 15:31:18,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2718, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2846, PETRI_PLACES=309, PETRI_TRANSITIONS=267} [2024-06-04 15:31:18,325 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-04 15:31:18,325 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 267 transitions, 2846 flow [2024-06-04 15:31:18,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:18,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:18,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:18,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 15:31:18,326 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:18,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:18,326 INFO L85 PathProgramCache]: Analyzing trace with hash -81868115, now seen corresponding path program 15 times [2024-06-04 15:31:18,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:18,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370618650] [2024-06-04 15:31:18,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:18,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:19,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:19,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370618650] [2024-06-04 15:31:19,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370618650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:19,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:19,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:19,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719606219] [2024-06-04 15:31:19,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:19,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:19,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:19,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:19,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:19,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:19,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 267 transitions, 2846 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:19,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:19,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:19,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:20,246 INFO L124 PetriNetUnfolderBase]: 552/1067 cut-off events. [2024-06-04 15:31:20,246 INFO L125 PetriNetUnfolderBase]: For 103667/103670 co-relation queries the response was YES. [2024-06-04 15:31:20,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7369 conditions, 1067 events. 552/1067 cut-off events. For 103667/103670 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6029 event pairs, 54 based on Foata normal form. 2/1064 useless extension candidates. Maximal degree in co-relation 7223. Up to 865 conditions per place. [2024-06-04 15:31:20,254 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 217 selfloop transitions, 58 changer transitions 0/278 dead transitions. [2024-06-04 15:31:20,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 278 transitions, 3422 flow [2024-06-04 15:31:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:20,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:31:20,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 15:31:20,256 INFO L175 Difference]: Start difference. First operand has 309 places, 267 transitions, 2846 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:31:20,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 278 transitions, 3422 flow [2024-06-04 15:31:20,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 278 transitions, 3304 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 15:31:20,657 INFO L231 Difference]: Finished difference. Result has 311 places, 267 transitions, 2848 flow [2024-06-04 15:31:20,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2728, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2848, PETRI_PLACES=311, PETRI_TRANSITIONS=267} [2024-06-04 15:31:20,657 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-06-04 15:31:20,658 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 267 transitions, 2848 flow [2024-06-04 15:31:20,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:20,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:20,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:20,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 15:31:20,658 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:20,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:20,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1505390672, now seen corresponding path program 7 times [2024-06-04 15:31:20,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:20,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853324048] [2024-06-04 15:31:20,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:20,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:22,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:22,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853324048] [2024-06-04 15:31:22,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853324048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:22,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:22,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:22,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627735195] [2024-06-04 15:31:22,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:22,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:22,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:22,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:22,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:22,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:22,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 267 transitions, 2848 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:22,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:22,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:22,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:22,807 INFO L124 PetriNetUnfolderBase]: 566/1094 cut-off events. [2024-06-04 15:31:22,807 INFO L125 PetriNetUnfolderBase]: For 115400/115400 co-relation queries the response was YES. [2024-06-04 15:31:22,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7730 conditions, 1094 events. 566/1094 cut-off events. For 115400/115400 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6254 event pairs, 49 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 7583. Up to 976 conditions per place. [2024-06-04 15:31:22,818 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 263 selfloop transitions, 19 changer transitions 0/285 dead transitions. [2024-06-04 15:31:22,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 285 transitions, 3717 flow [2024-06-04 15:31:22,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:31:22,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:31:22,819 INFO L175 Difference]: Start difference. First operand has 311 places, 267 transitions, 2848 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:31:22,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 285 transitions, 3717 flow [2024-06-04 15:31:23,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 285 transitions, 3469 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-04 15:31:23,237 INFO L231 Difference]: Finished difference. Result has 313 places, 271 transitions, 2722 flow [2024-06-04 15:31:23,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2722, PETRI_PLACES=313, PETRI_TRANSITIONS=271} [2024-06-04 15:31:23,238 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-04 15:31:23,238 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 271 transitions, 2722 flow [2024-06-04 15:31:23,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:23,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:23,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:23,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 15:31:23,238 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:23,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:23,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1842947709, now seen corresponding path program 8 times [2024-06-04 15:31:23,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:23,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233775032] [2024-06-04 15:31:23,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:23,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:24,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:24,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233775032] [2024-06-04 15:31:24,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233775032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:24,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:24,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:24,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780371080] [2024-06-04 15:31:24,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:24,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:24,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:24,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:24,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:24,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:24,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 271 transitions, 2722 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:24,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:24,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:24,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:25,338 INFO L124 PetriNetUnfolderBase]: 572/1105 cut-off events. [2024-06-04 15:31:25,338 INFO L125 PetriNetUnfolderBase]: For 111126/111129 co-relation queries the response was YES. [2024-06-04 15:31:25,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7568 conditions, 1105 events. 572/1105 cut-off events. For 111126/111129 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6325 event pairs, 59 based on Foata normal form. 1/1099 useless extension candidates. Maximal degree in co-relation 7420. Up to 858 conditions per place. [2024-06-04 15:31:25,350 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 215 selfloop transitions, 70 changer transitions 0/288 dead transitions. [2024-06-04 15:31:25,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 288 transitions, 3602 flow [2024-06-04 15:31:25,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 15:31:25,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 15:31:25,351 INFO L175 Difference]: Start difference. First operand has 313 places, 271 transitions, 2722 flow. Second operand 11 states and 140 transitions. [2024-06-04 15:31:25,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 288 transitions, 3602 flow [2024-06-04 15:31:25,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 288 transitions, 3501 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:25,743 INFO L231 Difference]: Finished difference. Result has 318 places, 275 transitions, 2837 flow [2024-06-04 15:31:25,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2837, PETRI_PLACES=318, PETRI_TRANSITIONS=275} [2024-06-04 15:31:25,744 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-04 15:31:25,744 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 275 transitions, 2837 flow [2024-06-04 15:31:25,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:25,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:25,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:25,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 15:31:25,745 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:25,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:25,745 INFO L85 PathProgramCache]: Analyzing trace with hash -426634244, now seen corresponding path program 8 times [2024-06-04 15:31:25,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:25,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740830816] [2024-06-04 15:31:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:25,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:27,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:27,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740830816] [2024-06-04 15:31:27,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740830816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:27,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:27,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:27,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163214718] [2024-06-04 15:31:27,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:27,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:27,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:27,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:27,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:27,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 275 transitions, 2837 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:27,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:27,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:27,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:27,624 INFO L124 PetriNetUnfolderBase]: 576/1115 cut-off events. [2024-06-04 15:31:27,624 INFO L125 PetriNetUnfolderBase]: For 118172/118175 co-relation queries the response was YES. [2024-06-04 15:31:27,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7607 conditions, 1115 events. 576/1115 cut-off events. For 118172/118175 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6381 event pairs, 55 based on Foata normal form. 2/1112 useless extension candidates. Maximal degree in co-relation 7458. Up to 925 conditions per place. [2024-06-04 15:31:27,635 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 54 changer transitions 0/289 dead transitions. [2024-06-04 15:31:27,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 289 transitions, 3475 flow [2024-06-04 15:31:27,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:27,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:31:27,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:31:27,636 INFO L175 Difference]: Start difference. First operand has 318 places, 275 transitions, 2837 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:31:27,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 289 transitions, 3475 flow [2024-06-04 15:31:28,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 289 transitions, 3284 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:28,061 INFO L231 Difference]: Finished difference. Result has 320 places, 277 transitions, 2798 flow [2024-06-04 15:31:28,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2646, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2798, PETRI_PLACES=320, PETRI_TRANSITIONS=277} [2024-06-04 15:31:28,062 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-04 15:31:28,062 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 277 transitions, 2798 flow [2024-06-04 15:31:28,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:28,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:28,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:28,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 15:31:28,062 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:28,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:28,062 INFO L85 PathProgramCache]: Analyzing trace with hash 2141985390, now seen corresponding path program 9 times [2024-06-04 15:31:28,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:28,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269810952] [2024-06-04 15:31:28,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:28,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:29,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:29,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269810952] [2024-06-04 15:31:29,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269810952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:29,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:29,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:29,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609334555] [2024-06-04 15:31:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:29,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:29,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:29,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:29,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:29,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:29,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 277 transitions, 2798 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:29,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:29,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:29,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:29,998 INFO L124 PetriNetUnfolderBase]: 580/1123 cut-off events. [2024-06-04 15:31:29,999 INFO L125 PetriNetUnfolderBase]: For 120409/120412 co-relation queries the response was YES. [2024-06-04 15:31:30,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7598 conditions, 1123 events. 580/1123 cut-off events. For 120409/120412 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6432 event pairs, 55 based on Foata normal form. 2/1120 useless extension candidates. Maximal degree in co-relation 7450. Up to 878 conditions per place. [2024-06-04 15:31:30,015 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 215 selfloop transitions, 72 changer transitions 0/290 dead transitions. [2024-06-04 15:31:30,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 290 transitions, 3430 flow [2024-06-04 15:31:30,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 15:31:30,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 15:31:30,016 INFO L175 Difference]: Start difference. First operand has 320 places, 277 transitions, 2798 flow. Second operand 11 states and 136 transitions. [2024-06-04 15:31:30,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 290 transitions, 3430 flow [2024-06-04 15:31:30,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 290 transitions, 3261 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-04 15:31:30,427 INFO L231 Difference]: Finished difference. Result has 320 places, 278 transitions, 2809 flow [2024-06-04 15:31:30,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2809, PETRI_PLACES=320, PETRI_TRANSITIONS=278} [2024-06-04 15:31:30,428 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-04 15:31:30,428 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 278 transitions, 2809 flow [2024-06-04 15:31:30,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:30,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:30,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:30,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 15:31:30,429 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:30,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:30,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1249810405, now seen corresponding path program 9 times [2024-06-04 15:31:30,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:30,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032893865] [2024-06-04 15:31:30,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:30,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:31,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:31,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032893865] [2024-06-04 15:31:31,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032893865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:31,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:31,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:31,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470147222] [2024-06-04 15:31:31,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:31,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:31,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:31,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:31,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:32,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:32,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 278 transitions, 2809 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:32,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:32,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:32,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:32,476 INFO L124 PetriNetUnfolderBase]: 588/1134 cut-off events. [2024-06-04 15:31:32,476 INFO L125 PetriNetUnfolderBase]: For 122815/122818 co-relation queries the response was YES. [2024-06-04 15:31:32,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7772 conditions, 1134 events. 588/1134 cut-off events. For 122815/122818 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6523 event pairs, 59 based on Foata normal form. 1/1128 useless extension candidates. Maximal degree in co-relation 7627. Up to 798 conditions per place. [2024-06-04 15:31:32,488 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 102 changer transitions 0/294 dead transitions. [2024-06-04 15:31:32,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 294 transitions, 3751 flow [2024-06-04 15:31:32,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 15:31:32,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 15:31:32,489 INFO L175 Difference]: Start difference. First operand has 320 places, 278 transitions, 2809 flow. Second operand 11 states and 141 transitions. [2024-06-04 15:31:32,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 294 transitions, 3751 flow [2024-06-04 15:31:32,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 294 transitions, 3574 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:32,936 INFO L231 Difference]: Finished difference. Result has 322 places, 282 transitions, 2965 flow [2024-06-04 15:31:32,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2965, PETRI_PLACES=322, PETRI_TRANSITIONS=282} [2024-06-04 15:31:32,936 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-04 15:31:32,936 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 282 transitions, 2965 flow [2024-06-04 15:31:32,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:32,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:32,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:32,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 15:31:32,937 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:32,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:32,938 INFO L85 PathProgramCache]: Analyzing trace with hash -426893714, now seen corresponding path program 10 times [2024-06-04 15:31:32,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:32,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920033429] [2024-06-04 15:31:32,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:32,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:34,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:34,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920033429] [2024-06-04 15:31:34,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920033429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:34,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:34,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:34,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332128787] [2024-06-04 15:31:34,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:34,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:34,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:34,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:34,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:34,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:34,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 282 transitions, 2965 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:34,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:34,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:34,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:34,732 INFO L124 PetriNetUnfolderBase]: 592/1144 cut-off events. [2024-06-04 15:31:34,732 INFO L125 PetriNetUnfolderBase]: For 131360/131363 co-relation queries the response was YES. [2024-06-04 15:31:34,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7901 conditions, 1144 events. 592/1144 cut-off events. For 131360/131363 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6584 event pairs, 55 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 7755. Up to 969 conditions per place. [2024-06-04 15:31:34,743 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 46 changer transitions 0/295 dead transitions. [2024-06-04 15:31:34,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 295 transitions, 3609 flow [2024-06-04 15:31:34,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:34,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:34,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 15:31:34,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 15:31:34,744 INFO L175 Difference]: Start difference. First operand has 322 places, 282 transitions, 2965 flow. Second operand 11 states and 136 transitions. [2024-06-04 15:31:34,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 295 transitions, 3609 flow [2024-06-04 15:31:35,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 295 transitions, 3414 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:35,251 INFO L231 Difference]: Finished difference. Result has 326 places, 283 transitions, 2900 flow [2024-06-04 15:31:35,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2770, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2900, PETRI_PLACES=326, PETRI_TRANSITIONS=283} [2024-06-04 15:31:35,252 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 295 predicate places. [2024-06-04 15:31:35,252 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 283 transitions, 2900 flow [2024-06-04 15:31:35,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:35,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:35,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:35,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 15:31:35,253 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:35,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:35,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2145839785, now seen corresponding path program 10 times [2024-06-04 15:31:35,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:35,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064514378] [2024-06-04 15:31:35,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:35,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:36,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:36,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064514378] [2024-06-04 15:31:36,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064514378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:36,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:36,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:36,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384734445] [2024-06-04 15:31:36,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:36,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:36,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:36,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:36,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:37,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:37,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 283 transitions, 2900 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:37,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:37,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:37,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:37,599 INFO L124 PetriNetUnfolderBase]: 595/1151 cut-off events. [2024-06-04 15:31:37,599 INFO L125 PetriNetUnfolderBase]: For 127282/127285 co-relation queries the response was YES. [2024-06-04 15:31:37,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 1151 events. 595/1151 cut-off events. For 127282/127285 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6654 event pairs, 57 based on Foata normal form. 1/1147 useless extension candidates. Maximal degree in co-relation 7822. Up to 844 conditions per place. [2024-06-04 15:31:37,610 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 199 selfloop transitions, 94 changer transitions 0/296 dead transitions. [2024-06-04 15:31:37,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 296 transitions, 3576 flow [2024-06-04 15:31:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 15:31:37,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-04 15:31:37,611 INFO L175 Difference]: Start difference. First operand has 326 places, 283 transitions, 2900 flow. Second operand 11 states and 139 transitions. [2024-06-04 15:31:37,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 296 transitions, 3576 flow [2024-06-04 15:31:38,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 296 transitions, 3451 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:38,107 INFO L231 Difference]: Finished difference. Result has 328 places, 285 transitions, 3036 flow [2024-06-04 15:31:38,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2775, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3036, PETRI_PLACES=328, PETRI_TRANSITIONS=285} [2024-06-04 15:31:38,107 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-04 15:31:38,107 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 285 transitions, 3036 flow [2024-06-04 15:31:38,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:38,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:38,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:38,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 15:31:38,108 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:38,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:38,108 INFO L85 PathProgramCache]: Analyzing trace with hash -426893993, now seen corresponding path program 11 times [2024-06-04 15:31:38,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:38,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761318861] [2024-06-04 15:31:38,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:38,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:39,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:39,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761318861] [2024-06-04 15:31:39,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761318861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:39,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:39,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:39,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745449971] [2024-06-04 15:31:39,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:39,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:39,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:39,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:39,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:39,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:39,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 285 transitions, 3036 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:39,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:39,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:39,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:40,095 INFO L124 PetriNetUnfolderBase]: 603/1164 cut-off events. [2024-06-04 15:31:40,096 INFO L125 PetriNetUnfolderBase]: For 136042/136045 co-relation queries the response was YES. [2024-06-04 15:31:40,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8302 conditions, 1164 events. 603/1164 cut-off events. For 136042/136045 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6759 event pairs, 59 based on Foata normal form. 1/1158 useless extension candidates. Maximal degree in co-relation 8153. Up to 947 conditions per place. [2024-06-04 15:31:40,108 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 59 changer transitions 0/301 dead transitions. [2024-06-04 15:31:40,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 301 transitions, 3976 flow [2024-06-04 15:31:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:40,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:40,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 15:31:40,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 15:31:40,109 INFO L175 Difference]: Start difference. First operand has 328 places, 285 transitions, 3036 flow. Second operand 11 states and 140 transitions. [2024-06-04 15:31:40,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 301 transitions, 3976 flow [2024-06-04 15:31:40,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 301 transitions, 3731 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:40,676 INFO L231 Difference]: Finished difference. Result has 331 places, 289 transitions, 3026 flow [2024-06-04 15:31:40,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3026, PETRI_PLACES=331, PETRI_TRANSITIONS=289} [2024-06-04 15:31:40,677 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-04 15:31:40,677 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 289 transitions, 3026 flow [2024-06-04 15:31:40,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:40,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:40,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:40,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 15:31:40,677 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:40,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:40,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2145572596, now seen corresponding path program 11 times [2024-06-04 15:31:40,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:40,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040456907] [2024-06-04 15:31:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:40,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:41,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:41,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:41,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040456907] [2024-06-04 15:31:41,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040456907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:41,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:41,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:41,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851091491] [2024-06-04 15:31:41,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:41,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:41,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:41,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:41,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:42,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:42,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 289 transitions, 3026 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:42,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:42,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:42,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:42,503 INFO L124 PetriNetUnfolderBase]: 610/1179 cut-off events. [2024-06-04 15:31:42,503 INFO L125 PetriNetUnfolderBase]: For 144414/144417 co-relation queries the response was YES. [2024-06-04 15:31:42,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8321 conditions, 1179 events. 610/1179 cut-off events. For 144414/144417 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6853 event pairs, 57 based on Foata normal form. 2/1176 useless extension candidates. Maximal degree in co-relation 8170. Up to 921 conditions per place. [2024-06-04 15:31:42,515 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 76 changer transitions 0/304 dead transitions. [2024-06-04 15:31:42,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 304 transitions, 3702 flow [2024-06-04 15:31:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:42,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:31:42,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:31:42,516 INFO L175 Difference]: Start difference. First operand has 331 places, 289 transitions, 3026 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:31:42,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 304 transitions, 3702 flow [2024-06-04 15:31:42,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 304 transitions, 3555 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 15:31:42,986 INFO L231 Difference]: Finished difference. Result has 334 places, 292 transitions, 3083 flow [2024-06-04 15:31:42,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3083, PETRI_PLACES=334, PETRI_TRANSITIONS=292} [2024-06-04 15:31:42,986 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-04 15:31:42,986 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 292 transitions, 3083 flow [2024-06-04 15:31:42,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:42,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:42,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:42,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 15:31:42,987 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:42,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:42,987 INFO L85 PathProgramCache]: Analyzing trace with hash -426901433, now seen corresponding path program 12 times [2024-06-04 15:31:42,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:42,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043736637] [2024-06-04 15:31:42,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:42,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:44,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043736637] [2024-06-04 15:31:44,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043736637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:44,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:44,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:44,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970105693] [2024-06-04 15:31:44,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:44,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:44,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:44,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:44,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:44,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:44,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 292 transitions, 3083 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:44,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:44,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:44,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:45,259 INFO L124 PetriNetUnfolderBase]: 608/1176 cut-off events. [2024-06-04 15:31:45,259 INFO L125 PetriNetUnfolderBase]: For 134446/134449 co-relation queries the response was YES. [2024-06-04 15:31:45,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8220 conditions, 1176 events. 608/1176 cut-off events. For 134446/134449 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6814 event pairs, 57 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 8068. Up to 939 conditions per place. [2024-06-04 15:31:45,271 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 68 changer transitions 0/304 dead transitions. [2024-06-04 15:31:45,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 304 transitions, 3935 flow [2024-06-04 15:31:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 15:31:45,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 15:31:45,272 INFO L175 Difference]: Start difference. First operand has 334 places, 292 transitions, 3083 flow. Second operand 11 states and 140 transitions. [2024-06-04 15:31:45,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 304 transitions, 3935 flow [2024-06-04 15:31:45,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 304 transitions, 3720 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-04 15:31:45,772 INFO L231 Difference]: Finished difference. Result has 337 places, 292 transitions, 3009 flow [2024-06-04 15:31:45,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3009, PETRI_PLACES=337, PETRI_TRANSITIONS=292} [2024-06-04 15:31:45,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-04 15:31:45,773 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 292 transitions, 3009 flow [2024-06-04 15:31:45,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:45,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:45,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:45,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 15:31:45,773 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:45,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1249601155, now seen corresponding path program 13 times [2024-06-04 15:31:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:45,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832043231] [2024-06-04 15:31:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:45,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:48,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:48,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832043231] [2024-06-04 15:31:48,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832043231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:48,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:48,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:48,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952292578] [2024-06-04 15:31:48,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:48,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:48,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:48,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:48,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:48,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:48,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 292 transitions, 3009 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:48,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:48,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:48,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:48,667 INFO L124 PetriNetUnfolderBase]: 611/1179 cut-off events. [2024-06-04 15:31:48,667 INFO L125 PetriNetUnfolderBase]: For 136366/136369 co-relation queries the response was YES. [2024-06-04 15:31:48,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8180 conditions, 1179 events. 611/1179 cut-off events. For 136366/136369 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6888 event pairs, 61 based on Foata normal form. 1/1173 useless extension candidates. Maximal degree in co-relation 8028. Up to 848 conditions per place. [2024-06-04 15:31:48,680 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 201 selfloop transitions, 101 changer transitions 0/305 dead transitions. [2024-06-04 15:31:48,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 305 transitions, 3687 flow [2024-06-04 15:31:48,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:31:48,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:31:48,681 INFO L175 Difference]: Start difference. First operand has 337 places, 292 transitions, 3009 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:31:48,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 305 transitions, 3687 flow [2024-06-04 15:31:49,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 305 transitions, 3561 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:31:49,212 INFO L231 Difference]: Finished difference. Result has 338 places, 294 transitions, 3142 flow [2024-06-04 15:31:49,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3142, PETRI_PLACES=338, PETRI_TRANSITIONS=294} [2024-06-04 15:31:49,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-04 15:31:49,213 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 294 transitions, 3142 flow [2024-06-04 15:31:49,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:49,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:49,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:49,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 15:31:49,213 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:49,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:49,214 INFO L85 PathProgramCache]: Analyzing trace with hash -426624944, now seen corresponding path program 12 times [2024-06-04 15:31:49,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:49,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628466628] [2024-06-04 15:31:49,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:49,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:50,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:50,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628466628] [2024-06-04 15:31:50,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628466628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:50,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:50,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:50,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709652337] [2024-06-04 15:31:50,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:50,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:50,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:50,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:50,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:50,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:50,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 294 transitions, 3142 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:50,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:50,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:50,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:50,992 INFO L124 PetriNetUnfolderBase]: 644/1248 cut-off events. [2024-06-04 15:31:50,992 INFO L125 PetriNetUnfolderBase]: For 208832/208835 co-relation queries the response was YES. [2024-06-04 15:31:51,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9894 conditions, 1248 events. 644/1248 cut-off events. For 208832/208835 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7306 event pairs, 68 based on Foata normal form. 2/1245 useless extension candidates. Maximal degree in co-relation 9742. Up to 973 conditions per place. [2024-06-04 15:31:51,006 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 253 selfloop transitions, 57 changer transitions 0/313 dead transitions. [2024-06-04 15:31:51,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 313 transitions, 4162 flow [2024-06-04 15:31:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:51,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 15:31:51,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:31:51,007 INFO L175 Difference]: Start difference. First operand has 338 places, 294 transitions, 3142 flow. Second operand 11 states and 143 transitions. [2024-06-04 15:31:51,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 313 transitions, 4162 flow [2024-06-04 15:31:51,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 313 transitions, 3923 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:51,803 INFO L231 Difference]: Finished difference. Result has 340 places, 296 transitions, 3095 flow [2024-06-04 15:31:51,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2903, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3095, PETRI_PLACES=340, PETRI_TRANSITIONS=296} [2024-06-04 15:31:51,803 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-04 15:31:51,804 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 296 transitions, 3095 flow [2024-06-04 15:31:51,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:51,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:51,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:51,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 15:31:51,804 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:51,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:51,805 INFO L85 PathProgramCache]: Analyzing trace with hash -434253083, now seen corresponding path program 14 times [2024-06-04 15:31:51,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:51,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703908205] [2024-06-04 15:31:51,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:51,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:54,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:54,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703908205] [2024-06-04 15:31:54,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703908205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:54,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:54,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:54,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239620379] [2024-06-04 15:31:54,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:54,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:54,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:54,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:54,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:54,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:54,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 296 transitions, 3095 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:54,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:54,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:54,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:54,890 INFO L124 PetriNetUnfolderBase]: 647/1251 cut-off events. [2024-06-04 15:31:54,890 INFO L125 PetriNetUnfolderBase]: For 205754/205757 co-relation queries the response was YES. [2024-06-04 15:31:54,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9873 conditions, 1251 events. 647/1251 cut-off events. For 205754/205757 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7356 event pairs, 74 based on Foata normal form. 1/1245 useless extension candidates. Maximal degree in co-relation 9720. Up to 997 conditions per place. [2024-06-04 15:31:54,904 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 237 selfloop transitions, 72 changer transitions 0/312 dead transitions. [2024-06-04 15:31:54,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 312 transitions, 4481 flow [2024-06-04 15:31:54,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:54,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-04 15:31:54,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-04 15:31:54,905 INFO L175 Difference]: Start difference. First operand has 340 places, 296 transitions, 3095 flow. Second operand 11 states and 145 transitions. [2024-06-04 15:31:54,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 312 transitions, 4481 flow [2024-06-04 15:31:55,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 312 transitions, 4372 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:55,701 INFO L231 Difference]: Finished difference. Result has 344 places, 298 transitions, 3187 flow [2024-06-04 15:31:55,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3187, PETRI_PLACES=344, PETRI_TRANSITIONS=298} [2024-06-04 15:31:55,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-04 15:31:55,701 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 298 transitions, 3187 flow [2024-06-04 15:31:55,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:55,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:55,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:55,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 15:31:55,702 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:55,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:55,702 INFO L85 PathProgramCache]: Analyzing trace with hash -434043554, now seen corresponding path program 13 times [2024-06-04 15:31:55,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:55,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467744701] [2024-06-04 15:31:55,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:55,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:56,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:56,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467744701] [2024-06-04 15:31:56,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467744701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:56,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:56,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:56,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228796186] [2024-06-04 15:31:56,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:56,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:56,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:56,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:56,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:56,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:56,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 298 transitions, 3187 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:56,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:56,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:56,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:57,381 INFO L124 PetriNetUnfolderBase]: 651/1261 cut-off events. [2024-06-04 15:31:57,382 INFO L125 PetriNetUnfolderBase]: For 216019/216022 co-relation queries the response was YES. [2024-06-04 15:31:57,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10024 conditions, 1261 events. 651/1261 cut-off events. For 216019/216022 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7406 event pairs, 70 based on Foata normal form. 2/1258 useless extension candidates. Maximal degree in co-relation 9869. Up to 1067 conditions per place. [2024-06-04 15:31:57,396 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 49 changer transitions 0/310 dead transitions. [2024-06-04 15:31:57,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 310 transitions, 3861 flow [2024-06-04 15:31:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:57,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-04 15:31:57,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-04 15:31:57,397 INFO L175 Difference]: Start difference. First operand has 344 places, 298 transitions, 3187 flow. Second operand 10 states and 129 transitions. [2024-06-04 15:31:57,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 310 transitions, 3861 flow [2024-06-04 15:31:58,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 310 transitions, 3677 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:58,261 INFO L231 Difference]: Finished difference. Result has 345 places, 299 transitions, 3141 flow [2024-06-04 15:31:58,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3003, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3141, PETRI_PLACES=345, PETRI_TRANSITIONS=299} [2024-06-04 15:31:58,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-04 15:31:58,262 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 299 transitions, 3141 flow [2024-06-04 15:31:58,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:58,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:58,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:58,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 15:31:58,262 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:31:58,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:58,262 INFO L85 PathProgramCache]: Analyzing trace with hash -434051273, now seen corresponding path program 15 times [2024-06-04 15:31:58,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:58,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193297438] [2024-06-04 15:31:58,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:58,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:59,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:59,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:59,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193297438] [2024-06-04 15:31:59,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193297438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:59,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:59,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:59,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496406781] [2024-06-04 15:31:59,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:59,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:59,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:59,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:59,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:59,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:31:59,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 299 transitions, 3141 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:59,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:59,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:31:59,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:00,509 INFO L124 PetriNetUnfolderBase]: 647/1255 cut-off events. [2024-06-04 15:32:00,510 INFO L125 PetriNetUnfolderBase]: For 205839/205842 co-relation queries the response was YES. [2024-06-04 15:32:00,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9688 conditions, 1255 events. 647/1255 cut-off events. For 205839/205842 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7390 event pairs, 70 based on Foata normal form. 2/1252 useless extension candidates. Maximal degree in co-relation 9532. Up to 1019 conditions per place. [2024-06-04 15:32:00,524 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 242 selfloop transitions, 66 changer transitions 0/311 dead transitions. [2024-06-04 15:32:00,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 311 transitions, 4017 flow [2024-06-04 15:32:00,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:00,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 15:32:00,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 15:32:00,525 INFO L175 Difference]: Start difference. First operand has 345 places, 299 transitions, 3141 flow. Second operand 11 states and 144 transitions. [2024-06-04 15:32:00,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 311 transitions, 4017 flow [2024-06-04 15:32:01,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 311 transitions, 3815 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-04 15:32:01,326 INFO L231 Difference]: Finished difference. Result has 349 places, 299 transitions, 3084 flow [2024-06-04 15:32:01,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3084, PETRI_PLACES=349, PETRI_TRANSITIONS=299} [2024-06-04 15:32:01,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-04 15:32:01,327 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 299 transitions, 3084 flow [2024-06-04 15:32:01,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:01,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:01,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:01,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 15:32:01,328 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:01,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:01,328 INFO L85 PathProgramCache]: Analyzing trace with hash -628192493, now seen corresponding path program 16 times [2024-06-04 15:32:01,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:01,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806909569] [2024-06-04 15:32:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:01,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:03,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:03,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806909569] [2024-06-04 15:32:03,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806909569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:03,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:03,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:03,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988034835] [2024-06-04 15:32:03,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:03,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:03,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:03,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:03,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:03,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:03,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 299 transitions, 3084 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:03,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:03,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:03,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:03,858 INFO L124 PetriNetUnfolderBase]: 650/1258 cut-off events. [2024-06-04 15:32:03,858 INFO L125 PetriNetUnfolderBase]: For 205230/205233 co-relation queries the response was YES. [2024-06-04 15:32:03,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9716 conditions, 1258 events. 650/1258 cut-off events. For 205230/205233 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7405 event pairs, 74 based on Foata normal form. 1/1252 useless extension candidates. Maximal degree in co-relation 9558. Up to 1062 conditions per place. [2024-06-04 15:32:03,870 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 262 selfloop transitions, 48 changer transitions 0/313 dead transitions. [2024-06-04 15:32:03,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 313 transitions, 4028 flow [2024-06-04 15:32:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:32:03,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:32:03,871 INFO L175 Difference]: Start difference. First operand has 349 places, 299 transitions, 3084 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:32:03,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 313 transitions, 4028 flow [2024-06-04 15:32:04,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 313 transitions, 3823 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 15:32:04,694 INFO L231 Difference]: Finished difference. Result has 348 places, 301 transitions, 3042 flow [2024-06-04 15:32:04,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2887, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3042, PETRI_PLACES=348, PETRI_TRANSITIONS=301} [2024-06-04 15:32:04,695 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-04 15:32:04,695 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 301 transitions, 3042 flow [2024-06-04 15:32:04,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:04,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:04,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:04,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 15:32:04,695 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:04,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:04,695 INFO L85 PathProgramCache]: Analyzing trace with hash -627982964, now seen corresponding path program 14 times [2024-06-04 15:32:04,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:04,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750505534] [2024-06-04 15:32:04,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:04,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:05,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:05,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750505534] [2024-06-04 15:32:05,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750505534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:05,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:05,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:05,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516813749] [2024-06-04 15:32:05,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:05,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:05,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:05,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:06,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:06,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 301 transitions, 3042 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:06,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:06,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:06,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:06,435 INFO L124 PetriNetUnfolderBase]: 649/1265 cut-off events. [2024-06-04 15:32:06,435 INFO L125 PetriNetUnfolderBase]: For 252189/252192 co-relation queries the response was YES. [2024-06-04 15:32:06,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8454 conditions, 1265 events. 649/1265 cut-off events. For 252189/252192 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7501 event pairs, 67 based on Foata normal form. 18/1278 useless extension candidates. Maximal degree in co-relation 8296. Up to 1036 conditions per place. [2024-06-04 15:32:06,448 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 271 selfloop transitions, 35 changer transitions 7/316 dead transitions. [2024-06-04 15:32:06,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 316 transitions, 3782 flow [2024-06-04 15:32:06,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:06,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-04 15:32:06,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:32:06,449 INFO L175 Difference]: Start difference. First operand has 348 places, 301 transitions, 3042 flow. Second operand 10 states and 128 transitions. [2024-06-04 15:32:06,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 316 transitions, 3782 flow [2024-06-04 15:32:07,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 316 transitions, 3628 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:07,047 INFO L231 Difference]: Finished difference. Result has 349 places, 298 transitions, 2924 flow [2024-06-04 15:32:07,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2888, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2924, PETRI_PLACES=349, PETRI_TRANSITIONS=298} [2024-06-04 15:32:07,048 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-04 15:32:07,048 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 298 transitions, 2924 flow [2024-06-04 15:32:07,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:07,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:07,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:07,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 15:32:07,048 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:07,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:07,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2141977671, now seen corresponding path program 17 times [2024-06-04 15:32:07,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:07,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959299866] [2024-06-04 15:32:07,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:07,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:08,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:08,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:08,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959299866] [2024-06-04 15:32:08,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959299866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:08,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:08,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:08,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733899484] [2024-06-04 15:32:08,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:08,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:08,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:08,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:08,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:08,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:08,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 298 transitions, 2924 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:08,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:08,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:08,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:09,203 INFO L124 PetriNetUnfolderBase]: 615/1194 cut-off events. [2024-06-04 15:32:09,203 INFO L125 PetriNetUnfolderBase]: For 131352/131355 co-relation queries the response was YES. [2024-06-04 15:32:09,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7824 conditions, 1194 events. 615/1194 cut-off events. For 131352/131355 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7020 event pairs, 57 based on Foata normal form. 1/1190 useless extension candidates. Maximal degree in co-relation 7665. Up to 888 conditions per place. [2024-06-04 15:32:09,215 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 212 selfloop transitions, 94 changer transitions 0/309 dead transitions. [2024-06-04 15:32:09,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 309 transitions, 3562 flow [2024-06-04 15:32:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:09,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:32:09,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:32:09,216 INFO L175 Difference]: Start difference. First operand has 349 places, 298 transitions, 2924 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:32:09,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 309 transitions, 3562 flow [2024-06-04 15:32:09,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 309 transitions, 3430 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:09,717 INFO L231 Difference]: Finished difference. Result has 351 places, 298 transitions, 2985 flow [2024-06-04 15:32:09,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2792, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2985, PETRI_PLACES=351, PETRI_TRANSITIONS=298} [2024-06-04 15:32:09,717 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-04 15:32:09,717 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 298 transitions, 2985 flow [2024-06-04 15:32:09,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:09,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:09,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:09,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 15:32:09,718 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:09,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:09,718 INFO L85 PathProgramCache]: Analyzing trace with hash -74502794, now seen corresponding path program 15 times [2024-06-04 15:32:09,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:09,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303478204] [2024-06-04 15:32:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:09,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:11,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:11,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303478204] [2024-06-04 15:32:11,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303478204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:11,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:11,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:11,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255605245] [2024-06-04 15:32:11,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:11,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:11,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:11,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:11,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:11,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:11,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 298 transitions, 2985 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:11,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:11,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:11,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:11,846 INFO L124 PetriNetUnfolderBase]: 619/1202 cut-off events. [2024-06-04 15:32:11,846 INFO L125 PetriNetUnfolderBase]: For 141069/141072 co-relation queries the response was YES. [2024-06-04 15:32:11,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7976 conditions, 1202 events. 619/1202 cut-off events. For 141069/141072 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7085 event pairs, 59 based on Foata normal form. 2/1199 useless extension candidates. Maximal degree in co-relation 7816. Up to 956 conditions per place. [2024-06-04 15:32:11,859 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 70 changer transitions 0/311 dead transitions. [2024-06-04 15:32:11,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 311 transitions, 3667 flow [2024-06-04 15:32:11,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:11,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 15:32:11,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 15:32:11,860 INFO L175 Difference]: Start difference. First operand has 351 places, 298 transitions, 2985 flow. Second operand 11 states and 137 transitions. [2024-06-04 15:32:11,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 311 transitions, 3667 flow [2024-06-04 15:32:12,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 311 transitions, 3467 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:32:12,375 INFO L231 Difference]: Finished difference. Result has 352 places, 299 transitions, 2969 flow [2024-06-04 15:32:12,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2785, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2969, PETRI_PLACES=352, PETRI_TRANSITIONS=299} [2024-06-04 15:32:12,376 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-04 15:32:12,376 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 299 transitions, 2969 flow [2024-06-04 15:32:12,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:12,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:12,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:12,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 15:32:12,376 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:12,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:12,376 INFO L85 PathProgramCache]: Analyzing trace with hash 124009357, now seen corresponding path program 18 times [2024-06-04 15:32:12,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:12,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661448421] [2024-06-04 15:32:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:12,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:13,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:13,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661448421] [2024-06-04 15:32:13,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661448421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:13,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:13,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:13,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286917570] [2024-06-04 15:32:13,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:13,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:13,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:13,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:13,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:13,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:13,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 299 transitions, 2969 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:13,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:13,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:13,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:14,599 INFO L124 PetriNetUnfolderBase]: 617/1199 cut-off events. [2024-06-04 15:32:14,599 INFO L125 PetriNetUnfolderBase]: For 128599/128602 co-relation queries the response was YES. [2024-06-04 15:32:14,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7789 conditions, 1199 events. 617/1199 cut-off events. For 128599/128602 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7061 event pairs, 59 based on Foata normal form. 1/1195 useless extension candidates. Maximal degree in co-relation 7628. Up to 739 conditions per place. [2024-06-04 15:32:14,612 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 139 changer transitions 0/313 dead transitions. [2024-06-04 15:32:14,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 313 transitions, 4169 flow [2024-06-04 15:32:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:14,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:14,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-04 15:32:14,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-04 15:32:14,613 INFO L175 Difference]: Start difference. First operand has 352 places, 299 transitions, 2969 flow. Second operand 10 states and 137 transitions. [2024-06-04 15:32:14,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 313 transitions, 4169 flow [2024-06-04 15:32:15,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 313 transitions, 3982 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-04 15:32:15,099 INFO L231 Difference]: Finished difference. Result has 352 places, 301 transitions, 3141 flow [2024-06-04 15:32:15,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2782, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3141, PETRI_PLACES=352, PETRI_TRANSITIONS=301} [2024-06-04 15:32:15,099 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-04 15:32:15,099 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 301 transitions, 3141 flow [2024-06-04 15:32:15,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:15,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:15,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:15,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 15:32:15,100 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:15,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:15,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1257229294, now seen corresponding path program 16 times [2024-06-04 15:32:15,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:15,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733163629] [2024-06-04 15:32:15,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:15,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:16,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:16,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733163629] [2024-06-04 15:32:16,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733163629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:16,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:16,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:16,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909435311] [2024-06-04 15:32:16,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:16,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:16,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:16,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:16,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:16,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:16,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 301 transitions, 3141 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:16,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:16,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:16,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:17,315 INFO L124 PetriNetUnfolderBase]: 621/1207 cut-off events. [2024-06-04 15:32:17,316 INFO L125 PetriNetUnfolderBase]: For 138474/138477 co-relation queries the response was YES. [2024-06-04 15:32:17,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7988 conditions, 1207 events. 621/1207 cut-off events. For 138474/138477 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7153 event pairs, 59 based on Foata normal form. 2/1204 useless extension candidates. Maximal degree in co-relation 7826. Up to 926 conditions per place. [2024-06-04 15:32:17,325 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 78 changer transitions 0/315 dead transitions. [2024-06-04 15:32:17,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 315 transitions, 3835 flow [2024-06-04 15:32:17,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:17,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:17,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 15:32:17,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-04 15:32:17,326 INFO L175 Difference]: Start difference. First operand has 352 places, 301 transitions, 3141 flow. Second operand 11 states and 139 transitions. [2024-06-04 15:32:17,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 315 transitions, 3835 flow [2024-06-04 15:32:17,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 315 transitions, 3501 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:17,751 INFO L231 Difference]: Finished difference. Result has 354 places, 302 transitions, 3009 flow [2024-06-04 15:32:17,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3009, PETRI_PLACES=354, PETRI_TRANSITIONS=302} [2024-06-04 15:32:17,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-04 15:32:17,751 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 302 transitions, 3009 flow [2024-06-04 15:32:17,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:17,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:17,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:17,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 15:32:17,752 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:17,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:17,752 INFO L85 PathProgramCache]: Analyzing trace with hash 175107346, now seen corresponding path program 17 times [2024-06-04 15:32:17,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:17,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552122181] [2024-06-04 15:32:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:17,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:19,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:19,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552122181] [2024-06-04 15:32:19,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552122181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:19,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:19,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:19,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090798259] [2024-06-04 15:32:19,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:19,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:19,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:19,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:19,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:19,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:19,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 302 transitions, 3009 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:19,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:19,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:19,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:19,897 INFO L124 PetriNetUnfolderBase]: 628/1219 cut-off events. [2024-06-04 15:32:19,898 INFO L125 PetriNetUnfolderBase]: For 138017/138017 co-relation queries the response was YES. [2024-06-04 15:32:19,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7915 conditions, 1219 events. 628/1219 cut-off events. For 138017/138017 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7220 event pairs, 57 based on Foata normal form. 2/1219 useless extension candidates. Maximal degree in co-relation 7753. Up to 1111 conditions per place. [2024-06-04 15:32:19,910 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 294 selfloop transitions, 20 changer transitions 0/317 dead transitions. [2024-06-04 15:32:19,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 317 transitions, 3710 flow [2024-06-04 15:32:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:19,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:19,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:32:19,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:32:19,911 INFO L175 Difference]: Start difference. First operand has 354 places, 302 transitions, 3009 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:32:19,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 317 transitions, 3710 flow [2024-06-04 15:32:20,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 317 transitions, 3518 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:20,400 INFO L231 Difference]: Finished difference. Result has 356 places, 305 transitions, 2908 flow [2024-06-04 15:32:20,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2817, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2908, PETRI_PLACES=356, PETRI_TRANSITIONS=305} [2024-06-04 15:32:20,401 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-04 15:32:20,401 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 305 transitions, 2908 flow [2024-06-04 15:32:20,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:20,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:20,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:20,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 15:32:20,401 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:20,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:20,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1830131792, now seen corresponding path program 18 times [2024-06-04 15:32:20,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:20,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224934043] [2024-06-04 15:32:20,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:20,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:22,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:22,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:22,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224934043] [2024-06-04 15:32:22,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224934043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:22,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:22,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:22,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688597504] [2024-06-04 15:32:22,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:22,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:22,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:22,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:22,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:22,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:22,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 305 transitions, 2908 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:22,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:22,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:22,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:22,724 INFO L124 PetriNetUnfolderBase]: 632/1227 cut-off events. [2024-06-04 15:32:22,724 INFO L125 PetriNetUnfolderBase]: For 139984/139984 co-relation queries the response was YES. [2024-06-04 15:32:22,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7836 conditions, 1227 events. 632/1227 cut-off events. For 139984/139984 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7285 event pairs, 55 based on Foata normal form. 2/1227 useless extension candidates. Maximal degree in co-relation 7673. Up to 1046 conditions per place. [2024-06-04 15:32:22,741 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 290 selfloop transitions, 29 changer transitions 0/322 dead transitions. [2024-06-04 15:32:22,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 322 transitions, 3870 flow [2024-06-04 15:32:22,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:32:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:32:22,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 15:32:22,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 15:32:22,742 INFO L175 Difference]: Start difference. First operand has 356 places, 305 transitions, 2908 flow. Second operand 12 states and 140 transitions. [2024-06-04 15:32:22,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 322 transitions, 3870 flow [2024-06-04 15:32:23,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 322 transitions, 3814 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:32:23,312 INFO L231 Difference]: Finished difference. Result has 360 places, 306 transitions, 2956 flow [2024-06-04 15:32:23,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2852, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2956, PETRI_PLACES=360, PETRI_TRANSITIONS=306} [2024-06-04 15:32:23,312 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-04 15:32:23,312 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 306 transitions, 2956 flow [2024-06-04 15:32:23,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:23,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:23,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:23,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 15:32:23,313 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:23,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:23,313 INFO L85 PathProgramCache]: Analyzing trace with hash 174847876, now seen corresponding path program 19 times [2024-06-04 15:32:23,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:23,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158000579] [2024-06-04 15:32:23,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:23,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:25,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:25,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158000579] [2024-06-04 15:32:25,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158000579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:25,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:25,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:25,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104275044] [2024-06-04 15:32:25,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:25,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:25,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:25,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:25,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:25,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:25,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 306 transitions, 2956 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:25,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:25,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:25,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:26,105 INFO L124 PetriNetUnfolderBase]: 629/1222 cut-off events. [2024-06-04 15:32:26,105 INFO L125 PetriNetUnfolderBase]: For 126816/126816 co-relation queries the response was YES. [2024-06-04 15:32:26,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7571 conditions, 1222 events. 629/1222 cut-off events. For 126816/126816 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7258 event pairs, 58 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 7407. Up to 1120 conditions per place. [2024-06-04 15:32:26,119 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 298 selfloop transitions, 17 changer transitions 0/318 dead transitions. [2024-06-04 15:32:26,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 318 transitions, 3614 flow [2024-06-04 15:32:26,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 15:32:26,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 15:32:26,120 INFO L175 Difference]: Start difference. First operand has 360 places, 306 transitions, 2956 flow. Second operand 11 states and 125 transitions. [2024-06-04 15:32:26,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 318 transitions, 3614 flow [2024-06-04 15:32:26,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 318 transitions, 3442 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:26,605 INFO L231 Difference]: Finished difference. Result has 360 places, 306 transitions, 2822 flow [2024-06-04 15:32:26,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2822, PETRI_PLACES=360, PETRI_TRANSITIONS=306} [2024-06-04 15:32:26,606 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-04 15:32:26,606 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 306 transitions, 2822 flow [2024-06-04 15:32:26,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:26,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:26,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:26,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 15:32:26,606 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:26,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:26,607 INFO L85 PathProgramCache]: Analyzing trace with hash 184053946, now seen corresponding path program 20 times [2024-06-04 15:32:26,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:26,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082674801] [2024-06-04 15:32:26,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:26,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:27,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:27,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082674801] [2024-06-04 15:32:27,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082674801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:27,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:27,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:27,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604770574] [2024-06-04 15:32:27,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:27,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:27,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:27,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:27,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:28,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:28,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 306 transitions, 2822 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:28,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:28,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:28,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:28,618 INFO L124 PetriNetUnfolderBase]: 633/1230 cut-off events. [2024-06-04 15:32:28,618 INFO L125 PetriNetUnfolderBase]: For 128104/128104 co-relation queries the response was YES. [2024-06-04 15:32:28,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7351 conditions, 1230 events. 633/1230 cut-off events. For 128104/128104 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7322 event pairs, 54 based on Foata normal form. 2/1230 useless extension candidates. Maximal degree in co-relation 7189. Up to 1070 conditions per place. [2024-06-04 15:32:28,629 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 290 selfloop transitions, 27 changer transitions 0/320 dead transitions. [2024-06-04 15:32:28,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 320 transitions, 3773 flow [2024-06-04 15:32:28,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:28,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 15:32:28,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:32:28,630 INFO L175 Difference]: Start difference. First operand has 360 places, 306 transitions, 2822 flow. Second operand 10 states and 120 transitions. [2024-06-04 15:32:28,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 320 transitions, 3773 flow [2024-06-04 15:32:29,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 320 transitions, 3720 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:29,034 INFO L231 Difference]: Finished difference. Result has 359 places, 307 transitions, 2866 flow [2024-06-04 15:32:29,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2769, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2866, PETRI_PLACES=359, PETRI_TRANSITIONS=307} [2024-06-04 15:32:29,035 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-04 15:32:29,035 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 307 transitions, 2866 flow [2024-06-04 15:32:29,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:29,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:29,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:29,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 15:32:29,036 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:29,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:29,036 INFO L85 PathProgramCache]: Analyzing trace with hash -627990683, now seen corresponding path program 19 times [2024-06-04 15:32:29,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:29,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651359652] [2024-06-04 15:32:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:29,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:30,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:30,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651359652] [2024-06-04 15:32:30,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651359652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:30,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:30,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:30,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452785012] [2024-06-04 15:32:30,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:30,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:30,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:30,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:30,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:31,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:31,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 307 transitions, 2866 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:31,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:31,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:31,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:31,460 INFO L124 PetriNetUnfolderBase]: 631/1226 cut-off events. [2024-06-04 15:32:31,460 INFO L125 PetriNetUnfolderBase]: For 114427/114430 co-relation queries the response was YES. [2024-06-04 15:32:31,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7236 conditions, 1226 events. 631/1226 cut-off events. For 114427/114430 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7289 event pairs, 66 based on Foata normal form. 1/1220 useless extension candidates. Maximal degree in co-relation 7073. Up to 1046 conditions per place. [2024-06-04 15:32:31,474 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 274 selfloop transitions, 41 changer transitions 0/318 dead transitions. [2024-06-04 15:32:31,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 318 transitions, 3522 flow [2024-06-04 15:32:31,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:32:31,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 15:32:31,475 INFO L175 Difference]: Start difference. First operand has 359 places, 307 transitions, 2866 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:32:31,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 318 transitions, 3522 flow [2024-06-04 15:32:31,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 318 transitions, 3396 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:31,875 INFO L231 Difference]: Finished difference. Result has 361 places, 307 transitions, 2827 flow [2024-06-04 15:32:31,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2740, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2827, PETRI_PLACES=361, PETRI_TRANSITIONS=307} [2024-06-04 15:32:31,876 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-04 15:32:31,876 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 307 transitions, 2827 flow [2024-06-04 15:32:31,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:31,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:31,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:31,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 15:32:31,877 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:31,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:31,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1819080602, now seen corresponding path program 21 times [2024-06-04 15:32:31,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:31,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303045188] [2024-06-04 15:32:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:31,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:33,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:33,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303045188] [2024-06-04 15:32:33,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303045188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:33,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:33,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:33,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903885295] [2024-06-04 15:32:33,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:33,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:33,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:33,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:33,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:33,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:33,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 307 transitions, 2827 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:33,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:33,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:33,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:33,937 INFO L124 PetriNetUnfolderBase]: 628/1222 cut-off events. [2024-06-04 15:32:33,938 INFO L125 PetriNetUnfolderBase]: For 105673/105673 co-relation queries the response was YES. [2024-06-04 15:32:33,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6857 conditions, 1222 events. 628/1222 cut-off events. For 105673/105673 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7268 event pairs, 57 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 6694. Up to 1105 conditions per place. [2024-06-04 15:32:33,951 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 292 selfloop transitions, 25 changer transitions 0/320 dead transitions. [2024-06-04 15:32:33,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 320 transitions, 3491 flow [2024-06-04 15:32:33,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:32:33,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:32:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 15:32:33,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:32:33,952 INFO L175 Difference]: Start difference. First operand has 361 places, 307 transitions, 2827 flow. Second operand 12 states and 138 transitions. [2024-06-04 15:32:33,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 320 transitions, 3491 flow [2024-06-04 15:32:34,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 320 transitions, 3316 flow, removed 19 selfloop flow, removed 12 redundant places. [2024-06-04 15:32:34,312 INFO L231 Difference]: Finished difference. Result has 361 places, 307 transitions, 2706 flow [2024-06-04 15:32:34,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2652, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2706, PETRI_PLACES=361, PETRI_TRANSITIONS=307} [2024-06-04 15:32:34,312 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-04 15:32:34,312 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 307 transitions, 2706 flow [2024-06-04 15:32:34,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:34,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:34,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:34,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 15:32:34,313 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:34,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:34,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1896489115, now seen corresponding path program 20 times [2024-06-04 15:32:34,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:34,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763347809] [2024-06-04 15:32:34,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:34,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:36,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:36,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763347809] [2024-06-04 15:32:36,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763347809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:36,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:36,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:36,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43958746] [2024-06-04 15:32:36,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:36,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:36,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:36,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:36,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:36,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 307 transitions, 2706 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:36,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:36,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:36,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:37,012 INFO L124 PetriNetUnfolderBase]: 626/1219 cut-off events. [2024-06-04 15:32:37,012 INFO L125 PetriNetUnfolderBase]: For 90366/90366 co-relation queries the response was YES. [2024-06-04 15:32:37,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6548 conditions, 1219 events. 626/1219 cut-off events. For 90366/90366 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7276 event pairs, 57 based on Foata normal form. 1/1218 useless extension candidates. Maximal degree in co-relation 6386. Up to 1120 conditions per place. [2024-06-04 15:32:37,026 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 297 selfloop transitions, 18 changer transitions 0/318 dead transitions. [2024-06-04 15:32:37,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 318 transitions, 3362 flow [2024-06-04 15:32:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 15:32:37,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 15:32:37,027 INFO L175 Difference]: Start difference. First operand has 361 places, 307 transitions, 2706 flow. Second operand 11 states and 125 transitions. [2024-06-04 15:32:37,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 318 transitions, 3362 flow [2024-06-04 15:32:37,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 318 transitions, 3234 flow, removed 22 selfloop flow, removed 13 redundant places. [2024-06-04 15:32:37,424 INFO L231 Difference]: Finished difference. Result has 359 places, 307 transitions, 2619 flow [2024-06-04 15:32:37,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2578, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2619, PETRI_PLACES=359, PETRI_TRANSITIONS=307} [2024-06-04 15:32:37,425 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-04 15:32:37,425 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 307 transitions, 2619 flow [2024-06-04 15:32:37,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:37,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:37,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:37,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 15:32:37,425 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:37,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:37,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1496930069, now seen corresponding path program 1 times [2024-06-04 15:32:37,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:37,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264087776] [2024-06-04 15:32:37,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:37,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:38,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:38,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264087776] [2024-06-04 15:32:38,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264087776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:38,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:38,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:38,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919810976] [2024-06-04 15:32:38,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:38,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:38,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:38,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:38,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:38,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:38,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 307 transitions, 2619 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:38,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:38,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:38,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:39,143 INFO L124 PetriNetUnfolderBase]: 638/1247 cut-off events. [2024-06-04 15:32:39,143 INFO L125 PetriNetUnfolderBase]: For 146522/146522 co-relation queries the response was YES. [2024-06-04 15:32:39,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6612 conditions, 1247 events. 638/1247 cut-off events. For 146522/146522 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7450 event pairs, 49 based on Foata normal form. 8/1253 useless extension candidates. Maximal degree in co-relation 6450. Up to 1061 conditions per place. [2024-06-04 15:32:39,157 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 297 selfloop transitions, 15 changer transitions 18/333 dead transitions. [2024-06-04 15:32:39,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 333 transitions, 3389 flow [2024-06-04 15:32:39,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:39,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:32:39,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 15:32:39,158 INFO L175 Difference]: Start difference. First operand has 359 places, 307 transitions, 2619 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:32:39,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 333 transitions, 3389 flow [2024-06-04 15:32:39,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 333 transitions, 3310 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-04 15:32:39,482 INFO L231 Difference]: Finished difference. Result has 358 places, 303 transitions, 2553 flow [2024-06-04 15:32:39,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2540, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2553, PETRI_PLACES=358, PETRI_TRANSITIONS=303} [2024-06-04 15:32:39,483 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-04 15:32:39,483 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 303 transitions, 2553 flow [2024-06-04 15:32:39,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:39,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:39,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:39,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 15:32:39,483 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:39,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:39,483 INFO L85 PathProgramCache]: Analyzing trace with hash 368183155, now seen corresponding path program 2 times [2024-06-04 15:32:39,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:39,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136672093] [2024-06-04 15:32:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:39,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:40,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:40,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:40,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136672093] [2024-06-04 15:32:40,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136672093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:40,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:40,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:40,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670309550] [2024-06-04 15:32:40,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:40,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:40,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:40,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:40,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:40,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:40,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 303 transitions, 2553 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:40,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:40,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:40,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:41,296 INFO L124 PetriNetUnfolderBase]: 618/1209 cut-off events. [2024-06-04 15:32:41,296 INFO L125 PetriNetUnfolderBase]: For 148847/148847 co-relation queries the response was YES. [2024-06-04 15:32:41,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6493 conditions, 1209 events. 618/1209 cut-off events. For 148847/148847 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7210 event pairs, 45 based on Foata normal form. 8/1215 useless extension candidates. Maximal degree in co-relation 6330. Up to 1040 conditions per place. [2024-06-04 15:32:41,314 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 294 selfloop transitions, 16 changer transitions 12/325 dead transitions. [2024-06-04 15:32:41,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 325 transitions, 3295 flow [2024-06-04 15:32:41,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:41,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 15:32:41,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 15:32:41,316 INFO L175 Difference]: Start difference. First operand has 358 places, 303 transitions, 2553 flow. Second operand 11 states and 131 transitions. [2024-06-04 15:32:41,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 325 transitions, 3295 flow [2024-06-04 15:32:41,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 325 transitions, 3257 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:32:41,957 INFO L231 Difference]: Finished difference. Result has 352 places, 300 transitions, 2535 flow [2024-06-04 15:32:41,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2535, PETRI_PLACES=352, PETRI_TRANSITIONS=300} [2024-06-04 15:32:41,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-04 15:32:41,957 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 300 transitions, 2535 flow [2024-06-04 15:32:41,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:41,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:41,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:41,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 15:32:41,958 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:41,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:41,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1239218061, now seen corresponding path program 3 times [2024-06-04 15:32:41,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:41,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963566414] [2024-06-04 15:32:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:41,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:43,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:43,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963566414] [2024-06-04 15:32:43,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963566414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:43,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:43,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:43,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245441371] [2024-06-04 15:32:43,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:43,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:43,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:43,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:43,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:43,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:43,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 300 transitions, 2535 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:43,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:43,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:43,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:44,053 INFO L124 PetriNetUnfolderBase]: 612/1203 cut-off events. [2024-06-04 15:32:44,053 INFO L125 PetriNetUnfolderBase]: For 158297/158297 co-relation queries the response was YES. [2024-06-04 15:32:44,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6516 conditions, 1203 events. 612/1203 cut-off events. For 158297/158297 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7185 event pairs, 55 based on Foata normal form. 10/1211 useless extension candidates. Maximal degree in co-relation 6356. Up to 1025 conditions per place. [2024-06-04 15:32:44,066 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 289 selfloop transitions, 17 changer transitions 12/321 dead transitions. [2024-06-04 15:32:44,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 321 transitions, 3309 flow [2024-06-04 15:32:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:44,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 15:32:44,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:32:44,066 INFO L175 Difference]: Start difference. First operand has 352 places, 300 transitions, 2535 flow. Second operand 11 states and 132 transitions. [2024-06-04 15:32:44,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 321 transitions, 3309 flow [2024-06-04 15:32:44,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 321 transitions, 3271 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:32:44,429 INFO L231 Difference]: Finished difference. Result has 348 places, 295 transitions, 2498 flow [2024-06-04 15:32:44,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2497, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2498, PETRI_PLACES=348, PETRI_TRANSITIONS=295} [2024-06-04 15:32:44,429 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-04 15:32:44,429 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 295 transitions, 2498 flow [2024-06-04 15:32:44,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:44,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:44,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:44,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 15:32:44,430 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:44,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:44,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1610549099, now seen corresponding path program 4 times [2024-06-04 15:32:44,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:44,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532889670] [2024-06-04 15:32:44,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:44,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:45,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:45,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532889670] [2024-06-04 15:32:45,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532889670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:45,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:45,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:45,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640585408] [2024-06-04 15:32:45,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:45,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:45,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:45,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:45,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:45,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:45,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 295 transitions, 2498 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:45,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:45,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:45,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:46,350 INFO L124 PetriNetUnfolderBase]: 592/1163 cut-off events. [2024-06-04 15:32:46,350 INFO L125 PetriNetUnfolderBase]: For 93067/93067 co-relation queries the response was YES. [2024-06-04 15:32:46,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6252 conditions, 1163 events. 592/1163 cut-off events. For 93067/93067 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 6867 event pairs, 45 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 6094. Up to 1019 conditions per place. [2024-06-04 15:32:46,359 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 292 selfloop transitions, 19 changer transitions 0/314 dead transitions. [2024-06-04 15:32:46,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 314 transitions, 3186 flow [2024-06-04 15:32:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:46,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:32:46,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:32:46,360 INFO L175 Difference]: Start difference. First operand has 348 places, 295 transitions, 2498 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:32:46,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 314 transitions, 3186 flow [2024-06-04 15:32:46,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 314 transitions, 3116 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:46,721 INFO L231 Difference]: Finished difference. Result has 345 places, 296 transitions, 2490 flow [2024-06-04 15:32:46,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2490, PETRI_PLACES=345, PETRI_TRANSITIONS=296} [2024-06-04 15:32:46,721 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-04 15:32:46,721 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 296 transitions, 2490 flow [2024-06-04 15:32:46,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:46,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:46,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:46,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 15:32:46,722 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:46,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2109089387, now seen corresponding path program 5 times [2024-06-04 15:32:46,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:46,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698150256] [2024-06-04 15:32:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:46,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698150256] [2024-06-04 15:32:48,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698150256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:48,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:48,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:48,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143739654] [2024-06-04 15:32:48,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:48,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:48,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:48,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:48,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:48,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:48,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 296 transitions, 2490 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:48,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:48,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:48,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:48,767 INFO L124 PetriNetUnfolderBase]: 626/1233 cut-off events. [2024-06-04 15:32:48,767 INFO L125 PetriNetUnfolderBase]: For 193539/193539 co-relation queries the response was YES. [2024-06-04 15:32:48,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7561 conditions, 1233 events. 626/1233 cut-off events. For 193539/193539 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7338 event pairs, 63 based on Foata normal form. 8/1239 useless extension candidates. Maximal degree in co-relation 7404. Up to 995 conditions per place. [2024-06-04 15:32:48,818 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 289 selfloop transitions, 22 changer transitions 10/324 dead transitions. [2024-06-04 15:32:48,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 324 transitions, 3587 flow [2024-06-04 15:32:48,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:48,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 15:32:48,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 15:32:48,820 INFO L175 Difference]: Start difference. First operand has 345 places, 296 transitions, 2490 flow. Second operand 11 states and 140 transitions. [2024-06-04 15:32:48,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 324 transitions, 3587 flow [2024-06-04 15:32:49,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 324 transitions, 3535 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:49,333 INFO L231 Difference]: Finished difference. Result has 348 places, 294 transitions, 2471 flow [2024-06-04 15:32:49,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2438, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2471, PETRI_PLACES=348, PETRI_TRANSITIONS=294} [2024-06-04 15:32:49,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-04 15:32:49,334 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 294 transitions, 2471 flow [2024-06-04 15:32:49,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:49,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:49,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:49,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 15:32:49,335 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:49,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:49,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2108911757, now seen corresponding path program 6 times [2024-06-04 15:32:49,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:49,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082357804] [2024-06-04 15:32:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:49,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:50,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:50,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082357804] [2024-06-04 15:32:50,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082357804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:50,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:50,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:50,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463519911] [2024-06-04 15:32:50,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:50,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:50,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:50,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:50,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:50,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:50,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 294 transitions, 2471 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:50,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:50,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:50,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:51,444 INFO L124 PetriNetUnfolderBase]: 588/1155 cut-off events. [2024-06-04 15:32:51,444 INFO L125 PetriNetUnfolderBase]: For 138269/138269 co-relation queries the response was YES. [2024-06-04 15:32:51,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6177 conditions, 1155 events. 588/1155 cut-off events. For 138269/138269 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 6812 event pairs, 47 based on Foata normal form. 8/1161 useless extension candidates. Maximal degree in co-relation 6018. Up to 995 conditions per place. [2024-06-04 15:32:51,463 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 281 selfloop transitions, 19 changer transitions 12/315 dead transitions. [2024-06-04 15:32:51,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 315 transitions, 3201 flow [2024-06-04 15:32:51,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:51,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:51,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 15:32:51,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:32:51,464 INFO L175 Difference]: Start difference. First operand has 348 places, 294 transitions, 2471 flow. Second operand 11 states and 132 transitions. [2024-06-04 15:32:51,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 315 transitions, 3201 flow [2024-06-04 15:32:51,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 315 transitions, 3149 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:51,925 INFO L231 Difference]: Finished difference. Result has 348 places, 290 transitions, 2404 flow [2024-06-04 15:32:51,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2404, PETRI_PLACES=348, PETRI_TRANSITIONS=290} [2024-06-04 15:32:51,926 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-04 15:32:51,926 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 290 transitions, 2404 flow [2024-06-04 15:32:51,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:51,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:51,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:51,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 15:32:51,926 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:51,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:51,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1936421867, now seen corresponding path program 7 times [2024-06-04 15:32:51,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371930386] [2024-06-04 15:32:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:51,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:53,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371930386] [2024-06-04 15:32:53,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371930386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:53,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:53,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:53,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632354480] [2024-06-04 15:32:53,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:53,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:53,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:53,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:53,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:53,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:53,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 290 transitions, 2404 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:53,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:53,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:53,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:54,008 INFO L124 PetriNetUnfolderBase]: 585/1150 cut-off events. [2024-06-04 15:32:54,008 INFO L125 PetriNetUnfolderBase]: For 152304/152304 co-relation queries the response was YES. [2024-06-04 15:32:54,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6152 conditions, 1150 events. 585/1150 cut-off events. For 152304/152304 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 6784 event pairs, 47 based on Foata normal form. 10/1158 useless extension candidates. Maximal degree in co-relation 5994. Up to 964 conditions per place. [2024-06-04 15:32:54,020 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 271 selfloop transitions, 31 changer transitions 6/311 dead transitions. [2024-06-04 15:32:54,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 311 transitions, 3156 flow [2024-06-04 15:32:54,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 15:32:54,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-04 15:32:54,021 INFO L175 Difference]: Start difference. First operand has 348 places, 290 transitions, 2404 flow. Second operand 11 states and 139 transitions. [2024-06-04 15:32:54,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 311 transitions, 3156 flow [2024-06-04 15:32:54,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 311 transitions, 3112 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:32:54,321 INFO L231 Difference]: Finished difference. Result has 343 places, 288 transitions, 2428 flow [2024-06-04 15:32:54,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2428, PETRI_PLACES=343, PETRI_TRANSITIONS=288} [2024-06-04 15:32:54,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-04 15:32:54,322 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 288 transitions, 2428 flow [2024-06-04 15:32:54,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:54,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:54,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:54,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 15:32:54,323 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:54,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:54,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1709992359, now seen corresponding path program 8 times [2024-06-04 15:32:54,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:54,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806877898] [2024-06-04 15:32:54,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:54,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:55,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:55,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806877898] [2024-06-04 15:32:55,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806877898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:55,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:55,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:55,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012049707] [2024-06-04 15:32:55,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:55,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:55,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:55,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:55,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:56,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:56,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 288 transitions, 2428 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:56,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:56,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:56,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:56,654 INFO L124 PetriNetUnfolderBase]: 580/1141 cut-off events. [2024-06-04 15:32:56,654 INFO L125 PetriNetUnfolderBase]: For 135221/135221 co-relation queries the response was YES. [2024-06-04 15:32:56,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6108 conditions, 1141 events. 580/1141 cut-off events. For 135221/135221 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6705 event pairs, 39 based on Foata normal form. 8/1147 useless extension candidates. Maximal degree in co-relation 5952. Up to 976 conditions per place. [2024-06-04 15:32:56,667 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 276 selfloop transitions, 16 changer transitions 15/310 dead transitions. [2024-06-04 15:32:56,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 310 transitions, 3142 flow [2024-06-04 15:32:56,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:56,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 15:32:56,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:32:56,668 INFO L175 Difference]: Start difference. First operand has 343 places, 288 transitions, 2428 flow. Second operand 11 states and 132 transitions. [2024-06-04 15:32:56,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 310 transitions, 3142 flow [2024-06-04 15:32:56,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 310 transitions, 3032 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:56,987 INFO L231 Difference]: Finished difference. Result has 343 places, 283 transitions, 2313 flow [2024-06-04 15:32:56,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2318, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2313, PETRI_PLACES=343, PETRI_TRANSITIONS=283} [2024-06-04 15:32:56,988 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-04 15:32:56,988 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 283 transitions, 2313 flow [2024-06-04 15:32:56,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:56,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:56,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:56,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 15:32:56,988 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:32:56,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1942677977, now seen corresponding path program 9 times [2024-06-04 15:32:56,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:56,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246904171] [2024-06-04 15:32:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:56,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:58,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:58,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246904171] [2024-06-04 15:32:58,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246904171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:58,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:58,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:58,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797417833] [2024-06-04 15:32:58,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:58,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:58,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:58,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:58,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:58,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:32:58,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 283 transitions, 2313 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:58,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:58,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:32:58,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:59,654 INFO L124 PetriNetUnfolderBase]: 558/1091 cut-off events. [2024-06-04 15:32:59,655 INFO L125 PetriNetUnfolderBase]: For 93535/93535 co-relation queries the response was YES. [2024-06-04 15:32:59,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5841 conditions, 1091 events. 558/1091 cut-off events. For 93535/93535 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6356 event pairs, 41 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 5684. Up to 952 conditions per place. [2024-06-04 15:32:59,672 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 268 selfloop transitions, 30 changer transitions 0/301 dead transitions. [2024-06-04 15:32:59,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 301 transitions, 2977 flow [2024-06-04 15:32:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:32:59,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 15:32:59,674 INFO L175 Difference]: Start difference. First operand has 343 places, 283 transitions, 2313 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:32:59,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 301 transitions, 2977 flow [2024-06-04 15:33:00,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 301 transitions, 2939 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:00,097 INFO L231 Difference]: Finished difference. Result has 338 places, 284 transitions, 2363 flow [2024-06-04 15:33:00,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2275, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2363, PETRI_PLACES=338, PETRI_TRANSITIONS=284} [2024-06-04 15:33:00,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-04 15:33:00,098 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 284 transitions, 2363 flow [2024-06-04 15:33:00,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:00,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:00,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:00,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 15:33:00,099 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:00,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:00,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1780656883, now seen corresponding path program 10 times [2024-06-04 15:33:00,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:00,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095599879] [2024-06-04 15:33:00,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:00,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:01,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:01,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:01,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095599879] [2024-06-04 15:33:01,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095599879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:01,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:01,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:01,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173446714] [2024-06-04 15:33:01,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:01,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:01,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:01,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:01,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:02,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:02,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 284 transitions, 2363 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:02,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:02,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:02,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:02,575 INFO L124 PetriNetUnfolderBase]: 562/1099 cut-off events. [2024-06-04 15:33:02,575 INFO L125 PetriNetUnfolderBase]: For 90917/90917 co-relation queries the response was YES. [2024-06-04 15:33:02,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5919 conditions, 1099 events. 562/1099 cut-off events. For 90917/90917 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6419 event pairs, 39 based on Foata normal form. 2/1099 useless extension candidates. Maximal degree in co-relation 5764. Up to 940 conditions per place. [2024-06-04 15:33:02,586 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 268 selfloop transitions, 32 changer transitions 0/303 dead transitions. [2024-06-04 15:33:02,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 303 transitions, 3035 flow [2024-06-04 15:33:02,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:02,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:33:02,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 15:33:02,587 INFO L175 Difference]: Start difference. First operand has 338 places, 284 transitions, 2363 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:33:02,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 303 transitions, 3035 flow [2024-06-04 15:33:02,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 303 transitions, 2957 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:02,853 INFO L231 Difference]: Finished difference. Result has 340 places, 285 transitions, 2379 flow [2024-06-04 15:33:02,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2379, PETRI_PLACES=340, PETRI_TRANSITIONS=285} [2024-06-04 15:33:02,853 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-04 15:33:02,853 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 285 transitions, 2379 flow [2024-06-04 15:33:02,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:02,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:02,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:02,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 15:33:02,854 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:02,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:02,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1936414923, now seen corresponding path program 1 times [2024-06-04 15:33:02,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:02,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214177409] [2024-06-04 15:33:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:02,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:04,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:04,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214177409] [2024-06-04 15:33:04,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214177409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:04,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:04,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:04,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926557371] [2024-06-04 15:33:04,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:04,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:04,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:04,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:04,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:04,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:04,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 285 transitions, 2379 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:04,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:04,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:04,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:05,642 INFO L124 PetriNetUnfolderBase]: 574/1127 cut-off events. [2024-06-04 15:33:05,642 INFO L125 PetriNetUnfolderBase]: For 137415/137415 co-relation queries the response was YES. [2024-06-04 15:33:05,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6096 conditions, 1127 events. 574/1127 cut-off events. For 137415/137415 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6614 event pairs, 45 based on Foata normal form. 8/1133 useless extension candidates. Maximal degree in co-relation 5940. Up to 956 conditions per place. [2024-06-04 15:33:05,660 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 270 selfloop transitions, 26 changer transitions 7/306 dead transitions. [2024-06-04 15:33:05,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 306 transitions, 3103 flow [2024-06-04 15:33:05,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:05,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 15:33:05,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-04 15:33:05,661 INFO L175 Difference]: Start difference. First operand has 340 places, 285 transitions, 2379 flow. Second operand 12 states and 146 transitions. [2024-06-04 15:33:05,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 306 transitions, 3103 flow [2024-06-04 15:33:06,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 306 transitions, 3019 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:06,004 INFO L231 Difference]: Finished difference. Result has 343 places, 282 transitions, 2331 flow [2024-06-04 15:33:06,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2331, PETRI_PLACES=343, PETRI_TRANSITIONS=282} [2024-06-04 15:33:06,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-04 15:33:06,005 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 282 transitions, 2331 flow [2024-06-04 15:33:06,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:06,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:06,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:06,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 15:33:06,005 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:06,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:06,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1942671033, now seen corresponding path program 2 times [2024-06-04 15:33:06,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:06,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992351726] [2024-06-04 15:33:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:06,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:07,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:07,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992351726] [2024-06-04 15:33:07,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992351726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:07,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:07,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:07,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755799512] [2024-06-04 15:33:07,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:07,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:07,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:07,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:07,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:07,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:07,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 282 transitions, 2331 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:07,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:07,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:07,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:08,549 INFO L124 PetriNetUnfolderBase]: 569/1124 cut-off events. [2024-06-04 15:33:08,549 INFO L125 PetriNetUnfolderBase]: For 139299/139299 co-relation queries the response was YES. [2024-06-04 15:33:08,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6023 conditions, 1124 events. 569/1124 cut-off events. For 139299/139299 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6605 event pairs, 47 based on Foata normal form. 8/1130 useless extension candidates. Maximal degree in co-relation 5866. Up to 952 conditions per place. [2024-06-04 15:33:08,561 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 269 selfloop transitions, 24 changer transitions 7/303 dead transitions. [2024-06-04 15:33:08,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 303 transitions, 3049 flow [2024-06-04 15:33:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:08,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 15:33:08,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-04 15:33:08,562 INFO L175 Difference]: Start difference. First operand has 343 places, 282 transitions, 2331 flow. Second operand 12 states and 145 transitions. [2024-06-04 15:33:08,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 303 transitions, 3049 flow [2024-06-04 15:33:08,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 303 transitions, 2991 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 15:33:08,856 INFO L231 Difference]: Finished difference. Result has 341 places, 279 transitions, 2305 flow [2024-06-04 15:33:08,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2273, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2305, PETRI_PLACES=341, PETRI_TRANSITIONS=279} [2024-06-04 15:33:08,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-04 15:33:08,856 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 279 transitions, 2305 flow [2024-06-04 15:33:08,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:08,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:08,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:08,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 15:33:08,857 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:08,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:08,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1936175913, now seen corresponding path program 3 times [2024-06-04 15:33:08,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:08,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736475556] [2024-06-04 15:33:08,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:08,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:10,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:10,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736475556] [2024-06-04 15:33:10,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736475556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:10,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:10,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:10,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910476597] [2024-06-04 15:33:10,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:10,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:10,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:10,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:10,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:10,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:10,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 279 transitions, 2305 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:10,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:10,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:10,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:11,072 INFO L124 PetriNetUnfolderBase]: 560/1109 cut-off events. [2024-06-04 15:33:11,072 INFO L125 PetriNetUnfolderBase]: For 120101/120101 co-relation queries the response was YES. [2024-06-04 15:33:11,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5910 conditions, 1109 events. 560/1109 cut-off events. For 120101/120101 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6506 event pairs, 41 based on Foata normal form. 6/1113 useless extension candidates. Maximal degree in co-relation 5754. Up to 927 conditions per place. [2024-06-04 15:33:11,086 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 264 selfloop transitions, 21 changer transitions 10/298 dead transitions. [2024-06-04 15:33:11,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 298 transitions, 2983 flow [2024-06-04 15:33:11,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:11,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:11,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 15:33:11,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:33:11,087 INFO L175 Difference]: Start difference. First operand has 341 places, 279 transitions, 2305 flow. Second operand 12 states and 138 transitions. [2024-06-04 15:33:11,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 298 transitions, 2983 flow [2024-06-04 15:33:11,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 298 transitions, 2929 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 15:33:11,453 INFO L231 Difference]: Finished difference. Result has 339 places, 276 transitions, 2271 flow [2024-06-04 15:33:11,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2271, PETRI_PLACES=339, PETRI_TRANSITIONS=276} [2024-06-04 15:33:11,454 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-04 15:33:11,454 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 276 transitions, 2271 flow [2024-06-04 15:33:11,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:11,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:11,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:11,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 15:33:11,455 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:11,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:11,455 INFO L85 PathProgramCache]: Analyzing trace with hash 46150369, now seen corresponding path program 11 times [2024-06-04 15:33:11,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:11,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512886534] [2024-06-04 15:33:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:11,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:12,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:12,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:12,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512886534] [2024-06-04 15:33:12,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512886534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:12,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:12,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:12,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541656721] [2024-06-04 15:33:12,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:12,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:12,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:12,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:12,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:13,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:13,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 276 transitions, 2271 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:13,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:13,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:13,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:13,525 INFO L124 PetriNetUnfolderBase]: 549/1080 cut-off events. [2024-06-04 15:33:13,525 INFO L125 PetriNetUnfolderBase]: For 90946/90946 co-relation queries the response was YES. [2024-06-04 15:33:13,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5772 conditions, 1080 events. 549/1080 cut-off events. For 90946/90946 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6302 event pairs, 43 based on Foata normal form. 2/1080 useless extension candidates. Maximal degree in co-relation 5617. Up to 891 conditions per place. [2024-06-04 15:33:13,536 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 243 selfloop transitions, 45 changer transitions 0/291 dead transitions. [2024-06-04 15:33:13,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 291 transitions, 2907 flow [2024-06-04 15:33:13,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:13,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 15:33:13,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 15:33:13,537 INFO L175 Difference]: Start difference. First operand has 339 places, 276 transitions, 2271 flow. Second operand 11 states and 137 transitions. [2024-06-04 15:33:13,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 291 transitions, 2907 flow [2024-06-04 15:33:13,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 291 transitions, 2861 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:33:13,886 INFO L231 Difference]: Finished difference. Result has 335 places, 277 transitions, 2347 flow [2024-06-04 15:33:13,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2225, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2347, PETRI_PLACES=335, PETRI_TRANSITIONS=277} [2024-06-04 15:33:13,886 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-04 15:33:13,886 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 277 transitions, 2347 flow [2024-06-04 15:33:13,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:13,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:13,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:13,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 15:33:13,886 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:13,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:13,887 INFO L85 PathProgramCache]: Analyzing trace with hash 39894259, now seen corresponding path program 12 times [2024-06-04 15:33:13,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:13,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012525511] [2024-06-04 15:33:13,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:13,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:15,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:15,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012525511] [2024-06-04 15:33:15,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012525511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:15,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:15,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:15,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002385037] [2024-06-04 15:33:15,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:15,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:15,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:15,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:15,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:15,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:15,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 277 transitions, 2347 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:15,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:15,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:15,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:15,961 INFO L124 PetriNetUnfolderBase]: 553/1088 cut-off events. [2024-06-04 15:33:15,961 INFO L125 PetriNetUnfolderBase]: For 89994/89994 co-relation queries the response was YES. [2024-06-04 15:33:15,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5892 conditions, 1088 events. 553/1088 cut-off events. For 89994/89994 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6343 event pairs, 43 based on Foata normal form. 2/1088 useless extension candidates. Maximal degree in co-relation 5738. Up to 855 conditions per place. [2024-06-04 15:33:15,973 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 65 changer transitions 0/292 dead transitions. [2024-06-04 15:33:15,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 292 transitions, 2987 flow [2024-06-04 15:33:15,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:15,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 15:33:15,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 15:33:15,975 INFO L175 Difference]: Start difference. First operand has 335 places, 277 transitions, 2347 flow. Second operand 11 states and 140 transitions. [2024-06-04 15:33:15,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 292 transitions, 2987 flow [2024-06-04 15:33:16,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 292 transitions, 2875 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:16,309 INFO L231 Difference]: Finished difference. Result has 337 places, 278 transitions, 2399 flow [2024-06-04 15:33:16,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2399, PETRI_PLACES=337, PETRI_TRANSITIONS=278} [2024-06-04 15:33:16,309 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-04 15:33:16,309 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 278 transitions, 2399 flow [2024-06-04 15:33:16,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:16,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:16,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:16,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 15:33:16,310 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:16,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:16,310 INFO L85 PathProgramCache]: Analyzing trace with hash 267795409, now seen corresponding path program 13 times [2024-06-04 15:33:16,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:16,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889257287] [2024-06-04 15:33:16,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:16,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:17,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:17,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889257287] [2024-06-04 15:33:17,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889257287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:17,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:17,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:17,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655055100] [2024-06-04 15:33:17,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:17,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:17,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:17,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:17,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:17,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:17,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 278 transitions, 2399 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:17,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:17,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:17,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:18,475 INFO L124 PetriNetUnfolderBase]: 557/1096 cut-off events. [2024-06-04 15:33:18,476 INFO L125 PetriNetUnfolderBase]: For 91511/91511 co-relation queries the response was YES. [2024-06-04 15:33:18,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5979 conditions, 1096 events. 557/1096 cut-off events. For 91511/91511 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6391 event pairs, 45 based on Foata normal form. 2/1096 useless extension candidates. Maximal degree in co-relation 5824. Up to 907 conditions per place. [2024-06-04 15:33:18,485 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 240 selfloop transitions, 50 changer transitions 0/293 dead transitions. [2024-06-04 15:33:18,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 293 transitions, 3043 flow [2024-06-04 15:33:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:18,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:18,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:33:18,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 15:33:18,487 INFO L175 Difference]: Start difference. First operand has 337 places, 278 transitions, 2399 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:33:18,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 293 transitions, 3043 flow [2024-06-04 15:33:18,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 293 transitions, 2889 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:18,895 INFO L231 Difference]: Finished difference. Result has 339 places, 279 transitions, 2381 flow [2024-06-04 15:33:18,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2245, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2381, PETRI_PLACES=339, PETRI_TRANSITIONS=279} [2024-06-04 15:33:18,895 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-04 15:33:18,895 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 279 transitions, 2381 flow [2024-06-04 15:33:18,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:18,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:18,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:18,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 15:33:18,895 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:18,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:18,896 INFO L85 PathProgramCache]: Analyzing trace with hash 39716629, now seen corresponding path program 14 times [2024-06-04 15:33:18,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:18,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41548348] [2024-06-04 15:33:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:18,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:20,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:20,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41548348] [2024-06-04 15:33:20,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41548348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:20,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:20,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:20,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045364184] [2024-06-04 15:33:20,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:20,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:20,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:20,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:20,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:20,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 279 transitions, 2381 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:20,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:20,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:20,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:20,769 INFO L124 PetriNetUnfolderBase]: 583/1150 cut-off events. [2024-06-04 15:33:20,769 INFO L125 PetriNetUnfolderBase]: For 153251/153251 co-relation queries the response was YES. [2024-06-04 15:33:20,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7264 conditions, 1150 events. 583/1150 cut-off events. For 153251/153251 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6769 event pairs, 57 based on Foata normal form. 2/1150 useless extension candidates. Maximal degree in co-relation 7108. Up to 837 conditions per place. [2024-06-04 15:33:20,781 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 228 selfloop transitions, 68 changer transitions 0/299 dead transitions. [2024-06-04 15:33:20,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 299 transitions, 3359 flow [2024-06-04 15:33:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:20,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-04 15:33:20,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-04 15:33:20,783 INFO L175 Difference]: Start difference. First operand has 339 places, 279 transitions, 2381 flow. Second operand 11 states and 145 transitions. [2024-06-04 15:33:20,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 299 transitions, 3359 flow [2024-06-04 15:33:21,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 299 transitions, 3233 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:21,408 INFO L231 Difference]: Finished difference. Result has 341 places, 280 transitions, 2429 flow [2024-06-04 15:33:21,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2255, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2429, PETRI_PLACES=341, PETRI_TRANSITIONS=280} [2024-06-04 15:33:21,409 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-04 15:33:21,409 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 280 transitions, 2429 flow [2024-06-04 15:33:21,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:21,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:21,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:21,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 15:33:21,410 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:21,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:21,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1843671565, now seen corresponding path program 15 times [2024-06-04 15:33:21,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:21,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005951569] [2024-06-04 15:33:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:21,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:22,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:22,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005951569] [2024-06-04 15:33:22,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005951569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:22,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:22,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:22,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026754537] [2024-06-04 15:33:22,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:22,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:22,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:22,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:22,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:22,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:22,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 280 transitions, 2429 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:22,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:22,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:22,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:23,083 INFO L124 PetriNetUnfolderBase]: 617/1224 cut-off events. [2024-06-04 15:33:23,083 INFO L125 PetriNetUnfolderBase]: For 254609/254609 co-relation queries the response was YES. [2024-06-04 15:33:23,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8703 conditions, 1224 events. 617/1224 cut-off events. For 254609/254609 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7250 event pairs, 75 based on Foata normal form. 8/1230 useless extension candidates. Maximal degree in co-relation 8546. Up to 989 conditions per place. [2024-06-04 15:33:23,096 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 271 selfloop transitions, 21 changer transitions 10/305 dead transitions. [2024-06-04 15:33:23,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 305 transitions, 3508 flow [2024-06-04 15:33:23,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:23,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:33:23,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:33:23,097 INFO L175 Difference]: Start difference. First operand has 341 places, 280 transitions, 2429 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:33:23,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 305 transitions, 3508 flow [2024-06-04 15:33:23,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 305 transitions, 3342 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:23,841 INFO L231 Difference]: Finished difference. Result has 344 places, 278 transitions, 2294 flow [2024-06-04 15:33:23,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2294, PETRI_PLACES=344, PETRI_TRANSITIONS=278} [2024-06-04 15:33:23,842 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-04 15:33:23,842 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 278 transitions, 2294 flow [2024-06-04 15:33:23,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:23,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:23,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:23,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 15:33:23,842 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:23,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:23,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1843493935, now seen corresponding path program 16 times [2024-06-04 15:33:23,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:23,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107091596] [2024-06-04 15:33:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:23,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:25,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:25,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:25,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107091596] [2024-06-04 15:33:25,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107091596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:25,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:25,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:25,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704615265] [2024-06-04 15:33:25,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:25,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:25,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:25,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:25,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:25,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:25,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 278 transitions, 2294 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:25,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:25,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:25,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:25,554 INFO L124 PetriNetUnfolderBase]: 557/1100 cut-off events. [2024-06-04 15:33:25,554 INFO L125 PetriNetUnfolderBase]: For 137906/137906 co-relation queries the response was YES. [2024-06-04 15:33:25,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5853 conditions, 1100 events. 557/1100 cut-off events. For 137906/137906 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6440 event pairs, 47 based on Foata normal form. 8/1106 useless extension candidates. Maximal degree in co-relation 5694. Up to 943 conditions per place. [2024-06-04 15:33:25,566 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 263 selfloop transitions, 19 changer transitions 11/296 dead transitions. [2024-06-04 15:33:25,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 296 transitions, 2988 flow [2024-06-04 15:33:25,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 15:33:25,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 15:33:25,567 INFO L175 Difference]: Start difference. First operand has 344 places, 278 transitions, 2294 flow. Second operand 11 states and 130 transitions. [2024-06-04 15:33:25,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 296 transitions, 2988 flow [2024-06-04 15:33:25,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 296 transitions, 2937 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:25,984 INFO L231 Difference]: Finished difference. Result has 344 places, 275 transitions, 2247 flow [2024-06-04 15:33:25,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2243, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2247, PETRI_PLACES=344, PETRI_TRANSITIONS=275} [2024-06-04 15:33:25,984 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-04 15:33:25,984 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 275 transitions, 2247 flow [2024-06-04 15:33:25,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:25,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:25,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:25,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 15:33:25,985 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:25,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:25,985 INFO L85 PathProgramCache]: Analyzing trace with hash -199843367, now seen corresponding path program 17 times [2024-06-04 15:33:25,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:25,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121515106] [2024-06-04 15:33:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:25,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:27,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:27,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121515106] [2024-06-04 15:33:27,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121515106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:27,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:27,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:27,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590111643] [2024-06-04 15:33:27,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:27,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:27,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:27,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:27,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:27,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:27,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 275 transitions, 2247 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:27,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:27,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:27,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:28,060 INFO L124 PetriNetUnfolderBase]: 556/1097 cut-off events. [2024-06-04 15:33:28,060 INFO L125 PetriNetUnfolderBase]: For 154510/154510 co-relation queries the response was YES. [2024-06-04 15:33:28,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5848 conditions, 1097 events. 556/1097 cut-off events. For 154510/154510 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6426 event pairs, 47 based on Foata normal form. 10/1105 useless extension candidates. Maximal degree in co-relation 5690. Up to 914 conditions per place. [2024-06-04 15:33:28,069 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 253 selfloop transitions, 31 changer transitions 6/293 dead transitions. [2024-06-04 15:33:28,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 293 transitions, 2965 flow [2024-06-04 15:33:28,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:28,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:28,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 15:33:28,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 15:33:28,070 INFO L175 Difference]: Start difference. First operand has 344 places, 275 transitions, 2247 flow. Second operand 11 states and 137 transitions. [2024-06-04 15:33:28,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 293 transitions, 2965 flow [2024-06-04 15:33:28,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 293 transitions, 2921 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:33:28,409 INFO L231 Difference]: Finished difference. Result has 339 places, 273 transitions, 2285 flow [2024-06-04 15:33:28,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2285, PETRI_PLACES=339, PETRI_TRANSITIONS=273} [2024-06-04 15:33:28,410 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-04 15:33:28,410 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 273 transitions, 2285 flow [2024-06-04 15:33:28,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:28,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:28,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:28,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 15:33:28,410 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:28,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:28,410 INFO L85 PathProgramCache]: Analyzing trace with hash -377094857, now seen corresponding path program 18 times [2024-06-04 15:33:28,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:28,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219744582] [2024-06-04 15:33:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:28,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:30,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:30,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219744582] [2024-06-04 15:33:30,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219744582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:30,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:30,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069081276] [2024-06-04 15:33:30,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:30,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:30,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:30,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:30,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:30,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:30,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 273 transitions, 2285 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:30,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:30,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:30,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:30,571 INFO L124 PetriNetUnfolderBase]: 551/1088 cut-off events. [2024-06-04 15:33:30,572 INFO L125 PetriNetUnfolderBase]: For 135945/135945 co-relation queries the response was YES. [2024-06-04 15:33:30,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5834 conditions, 1088 events. 551/1088 cut-off events. For 135945/135945 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6356 event pairs, 39 based on Foata normal form. 8/1094 useless extension candidates. Maximal degree in co-relation 5678. Up to 926 conditions per place. [2024-06-04 15:33:30,585 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 17 changer transitions 14/292 dead transitions. [2024-06-04 15:33:30,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 292 transitions, 2965 flow [2024-06-04 15:33:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:30,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:30,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 15:33:30,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 15:33:30,586 INFO L175 Difference]: Start difference. First operand has 339 places, 273 transitions, 2285 flow. Second operand 11 states and 130 transitions. [2024-06-04 15:33:30,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 292 transitions, 2965 flow [2024-06-04 15:33:30,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 292 transitions, 2849 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-04 15:33:30,943 INFO L231 Difference]: Finished difference. Result has 339 places, 269 transitions, 2185 flow [2024-06-04 15:33:30,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2185, PETRI_PLACES=339, PETRI_TRANSITIONS=269} [2024-06-04 15:33:30,943 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-04 15:33:30,943 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 269 transitions, 2185 flow [2024-06-04 15:33:30,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:30,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:30,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:30,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 15:33:30,944 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:30,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:30,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1677260155, now seen corresponding path program 19 times [2024-06-04 15:33:30,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:30,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491174408] [2024-06-04 15:33:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:30,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:32,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:32,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491174408] [2024-06-04 15:33:32,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491174408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:32,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:32,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:32,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937570959] [2024-06-04 15:33:32,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:32,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:32,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:32,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:32,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:32,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:32,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 269 transitions, 2185 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:32,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:32,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:32,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:33,404 INFO L124 PetriNetUnfolderBase]: 532/1045 cut-off events. [2024-06-04 15:33:33,404 INFO L125 PetriNetUnfolderBase]: For 94701/94701 co-relation queries the response was YES. [2024-06-04 15:33:33,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5545 conditions, 1045 events. 532/1045 cut-off events. For 94701/94701 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6056 event pairs, 41 based on Foata normal form. 2/1045 useless extension candidates. Maximal degree in co-relation 5389. Up to 904 conditions per place. [2024-06-04 15:33:33,415 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 31 changer transitions 0/284 dead transitions. [2024-06-04 15:33:33,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 284 transitions, 2815 flow [2024-06-04 15:33:33,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:33,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 15:33:33,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:33:33,416 INFO L175 Difference]: Start difference. First operand has 339 places, 269 transitions, 2185 flow. Second operand 11 states and 132 transitions. [2024-06-04 15:33:33,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 284 transitions, 2815 flow [2024-06-04 15:33:33,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 284 transitions, 2775 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:33,717 INFO L231 Difference]: Finished difference. Result has 334 places, 270 transitions, 2247 flow [2024-06-04 15:33:33,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2247, PETRI_PLACES=334, PETRI_TRANSITIONS=270} [2024-06-04 15:33:33,717 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-04 15:33:33,717 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 270 transitions, 2247 flow [2024-06-04 15:33:33,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:33,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:33,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:33,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 15:33:33,717 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:33,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:33,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1677437785, now seen corresponding path program 20 times [2024-06-04 15:33:33,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:33,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727875535] [2024-06-04 15:33:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:33,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:35,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:35,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727875535] [2024-06-04 15:33:35,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727875535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:35,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:35,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:35,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666211633] [2024-06-04 15:33:35,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:35,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:35,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:35,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:35,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:35,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:35,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 270 transitions, 2247 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:35,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:35,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:35,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:36,434 INFO L124 PetriNetUnfolderBase]: 536/1053 cut-off events. [2024-06-04 15:33:36,434 INFO L125 PetriNetUnfolderBase]: For 92451/92451 co-relation queries the response was YES. [2024-06-04 15:33:36,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5647 conditions, 1053 events. 536/1053 cut-off events. For 92451/92451 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6107 event pairs, 39 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 5493. Up to 901 conditions per place. [2024-06-04 15:33:36,446 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 29 changer transitions 0/286 dead transitions. [2024-06-04 15:33:36,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 286 transitions, 2885 flow [2024-06-04 15:33:36,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:36,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:36,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 15:33:36,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 15:33:36,447 INFO L175 Difference]: Start difference. First operand has 334 places, 270 transitions, 2247 flow. Second operand 11 states and 131 transitions. [2024-06-04 15:33:36,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 286 transitions, 2885 flow [2024-06-04 15:33:36,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 286 transitions, 2793 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:36,820 INFO L231 Difference]: Finished difference. Result has 336 places, 271 transitions, 2255 flow [2024-06-04 15:33:36,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2255, PETRI_PLACES=336, PETRI_TRANSITIONS=271} [2024-06-04 15:33:36,820 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-04 15:33:36,820 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 271 transitions, 2255 flow [2024-06-04 15:33:36,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:36,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:36,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:36,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 15:33:36,821 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:36,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:36,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1677253211, now seen corresponding path program 4 times [2024-06-04 15:33:36,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:36,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759569429] [2024-06-04 15:33:36,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:36,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:39,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:39,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759569429] [2024-06-04 15:33:39,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759569429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:39,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:39,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:39,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242408315] [2024-06-04 15:33:39,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:39,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:39,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:39,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:39,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:39,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:39,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 271 transitions, 2255 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:39,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:39,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:39,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:40,525 INFO L124 PetriNetUnfolderBase]: 548/1081 cut-off events. [2024-06-04 15:33:40,525 INFO L125 PetriNetUnfolderBase]: For 139311/139311 co-relation queries the response was YES. [2024-06-04 15:33:40,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5788 conditions, 1081 events. 548/1081 cut-off events. For 139311/139311 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6304 event pairs, 45 based on Foata normal form. 8/1087 useless extension candidates. Maximal degree in co-relation 5633. Up to 902 conditions per place. [2024-06-04 15:33:40,542 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 251 selfloop transitions, 24 changer transitions 9/287 dead transitions. [2024-06-04 15:33:40,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 287 transitions, 2921 flow [2024-06-04 15:33:40,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 15:33:40,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:33:40,544 INFO L175 Difference]: Start difference. First operand has 336 places, 271 transitions, 2255 flow. Second operand 12 states and 138 transitions. [2024-06-04 15:33:40,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 287 transitions, 2921 flow [2024-06-04 15:33:40,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 287 transitions, 2831 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:40,881 INFO L231 Difference]: Finished difference. Result has 339 places, 268 transitions, 2195 flow [2024-06-04 15:33:40,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2195, PETRI_PLACES=339, PETRI_TRANSITIONS=268} [2024-06-04 15:33:40,881 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-04 15:33:40,882 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 268 transitions, 2195 flow [2024-06-04 15:33:40,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:40,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:40,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:40,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 15:33:40,882 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:40,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:40,883 INFO L85 PathProgramCache]: Analyzing trace with hash 46387953, now seen corresponding path program 5 times [2024-06-04 15:33:40,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:40,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818326977] [2024-06-04 15:33:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:40,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:42,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:42,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818326977] [2024-06-04 15:33:42,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818326977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:42,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:42,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:42,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399077769] [2024-06-04 15:33:42,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:42,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:42,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:42,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:42,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:42,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:42,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 268 transitions, 2195 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:42,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:42,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:42,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:42,789 INFO L124 PetriNetUnfolderBase]: 543/1078 cut-off events. [2024-06-04 15:33:42,789 INFO L125 PetriNetUnfolderBase]: For 140915/140915 co-relation queries the response was YES. [2024-06-04 15:33:42,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5682 conditions, 1078 events. 543/1078 cut-off events. For 140915/140915 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6310 event pairs, 47 based on Foata normal form. 8/1084 useless extension candidates. Maximal degree in co-relation 5526. Up to 831 conditions per place. [2024-06-04 15:33:42,805 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 49 changer transitions 6/285 dead transitions. [2024-06-04 15:33:42,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 285 transitions, 2861 flow [2024-06-04 15:33:42,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:33:42,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-04 15:33:42,807 INFO L175 Difference]: Start difference. First operand has 339 places, 268 transitions, 2195 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:33:42,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 285 transitions, 2861 flow [2024-06-04 15:33:43,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 285 transitions, 2809 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:33:43,149 INFO L231 Difference]: Finished difference. Result has 336 places, 265 transitions, 2222 flow [2024-06-04 15:33:43,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2222, PETRI_PLACES=336, PETRI_TRANSITIONS=265} [2024-06-04 15:33:43,150 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-04 15:33:43,150 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 265 transitions, 2222 flow [2024-06-04 15:33:43,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:43,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:43,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:43,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 15:33:43,150 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:43,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:43,151 INFO L85 PathProgramCache]: Analyzing trace with hash 46396323, now seen corresponding path program 6 times [2024-06-04 15:33:43,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:43,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486823041] [2024-06-04 15:33:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:43,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:44,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:44,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486823041] [2024-06-04 15:33:44,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486823041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:44,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:44,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:44,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393373636] [2024-06-04 15:33:44,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:44,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:44,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:44,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:44,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:44,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:44,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 265 transitions, 2222 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:44,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:44,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:44,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:45,338 INFO L124 PetriNetUnfolderBase]: 556/1107 cut-off events. [2024-06-04 15:33:45,338 INFO L125 PetriNetUnfolderBase]: For 181076/181076 co-relation queries the response was YES. [2024-06-04 15:33:45,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6902 conditions, 1107 events. 556/1107 cut-off events. For 181076/181076 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6459 event pairs, 53 based on Foata normal form. 6/1111 useless extension candidates. Maximal degree in co-relation 6747. Up to 821 conditions per place. [2024-06-04 15:33:45,351 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 41 changer transitions 7/285 dead transitions. [2024-06-04 15:33:45,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 285 transitions, 3178 flow [2024-06-04 15:33:45,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:45,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 15:33:45,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-04 15:33:45,352 INFO L175 Difference]: Start difference. First operand has 336 places, 265 transitions, 2222 flow. Second operand 12 states and 146 transitions. [2024-06-04 15:33:45,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 285 transitions, 3178 flow [2024-06-04 15:33:45,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 285 transitions, 3071 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 15:33:45,784 INFO L231 Difference]: Finished difference. Result has 336 places, 262 transitions, 2179 flow [2024-06-04 15:33:45,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2179, PETRI_PLACES=336, PETRI_TRANSITIONS=262} [2024-06-04 15:33:45,785 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-04 15:33:45,785 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 262 transitions, 2179 flow [2024-06-04 15:33:45,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:45,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:45,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:45,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 15:33:45,786 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:45,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:45,786 INFO L85 PathProgramCache]: Analyzing trace with hash 46157313, now seen corresponding path program 7 times [2024-06-04 15:33:45,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:45,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551100083] [2024-06-04 15:33:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:45,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:47,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:47,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551100083] [2024-06-04 15:33:47,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551100083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:47,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:47,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:47,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392403458] [2024-06-04 15:33:47,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:47,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:47,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:47,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:47,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:47,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:47,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 262 transitions, 2179 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:47,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:47,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:47,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:48,123 INFO L124 PetriNetUnfolderBase]: 553/1102 cut-off events. [2024-06-04 15:33:48,123 INFO L125 PetriNetUnfolderBase]: For 196631/196631 co-relation queries the response was YES. [2024-06-04 15:33:48,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6889 conditions, 1102 events. 553/1102 cut-off events. For 196631/196631 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6452 event pairs, 59 based on Foata normal form. 8/1108 useless extension candidates. Maximal degree in co-relation 6734. Up to 874 conditions per place. [2024-06-04 15:33:48,134 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 37 changer transitions 9/278 dead transitions. [2024-06-04 15:33:48,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 278 transitions, 2827 flow [2024-06-04 15:33:48,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:48,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-04 15:33:48,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-04 15:33:48,135 INFO L175 Difference]: Start difference. First operand has 336 places, 262 transitions, 2179 flow. Second operand 12 states and 143 transitions. [2024-06-04 15:33:48,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 278 transitions, 2827 flow [2024-06-04 15:33:48,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 278 transitions, 2745 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:33:48,650 INFO L231 Difference]: Finished difference. Result has 334 places, 259 transitions, 2151 flow [2024-06-04 15:33:48,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2097, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2151, PETRI_PLACES=334, PETRI_TRANSITIONS=259} [2024-06-04 15:33:48,651 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-04 15:33:48,651 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 259 transitions, 2151 flow [2024-06-04 15:33:48,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:48,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:48,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:48,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 15:33:48,651 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:48,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:48,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1670758091, now seen corresponding path program 8 times [2024-06-04 15:33:48,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:48,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118363893] [2024-06-04 15:33:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:48,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:50,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:50,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118363893] [2024-06-04 15:33:50,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118363893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:50,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:50,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:50,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750665866] [2024-06-04 15:33:50,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:50,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:50,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:50,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:50,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:50,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:50,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 259 transitions, 2151 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:50,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:50,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:50,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:50,762 INFO L124 PetriNetUnfolderBase]: 566/1137 cut-off events. [2024-06-04 15:33:50,762 INFO L125 PetriNetUnfolderBase]: For 238193/238193 co-relation queries the response was YES. [2024-06-04 15:33:50,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8034 conditions, 1137 events. 566/1137 cut-off events. For 238193/238193 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6729 event pairs, 67 based on Foata normal form. 6/1141 useless extension candidates. Maximal degree in co-relation 7880. Up to 901 conditions per place. [2024-06-04 15:33:50,775 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 24 changer transitions 7/279 dead transitions. [2024-06-04 15:33:50,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 279 transitions, 3093 flow [2024-06-04 15:33:50,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:50,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:50,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 15:33:50,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 15:33:50,776 INFO L175 Difference]: Start difference. First operand has 334 places, 259 transitions, 2151 flow. Second operand 12 states and 141 transitions. [2024-06-04 15:33:50,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 279 transitions, 3093 flow [2024-06-04 15:33:51,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 279 transitions, 3011 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:33:51,560 INFO L231 Difference]: Finished difference. Result has 332 places, 256 transitions, 2099 flow [2024-06-04 15:33:51,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2073, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2099, PETRI_PLACES=332, PETRI_TRANSITIONS=256} [2024-06-04 15:33:51,561 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-04 15:33:51,561 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 256 transitions, 2099 flow [2024-06-04 15:33:51,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:51,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:51,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:51,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 15:33:51,561 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:51,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:51,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1670997101, now seen corresponding path program 9 times [2024-06-04 15:33:51,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:51,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967887176] [2024-06-04 15:33:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:51,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:53,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:53,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967887176] [2024-06-04 15:33:53,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967887176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:53,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:53,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:53,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106475773] [2024-06-04 15:33:53,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:53,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:53,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:53,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:53,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:53,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:53,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 256 transitions, 2099 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:53,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:53,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:53,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:53,844 INFO L124 PetriNetUnfolderBase]: 541/1078 cut-off events. [2024-06-04 15:33:53,845 INFO L125 PetriNetUnfolderBase]: For 191949/191949 co-relation queries the response was YES. [2024-06-04 15:33:53,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6733 conditions, 1078 events. 541/1078 cut-off events. For 191949/191949 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6287 event pairs, 57 based on Foata normal form. 8/1084 useless extension candidates. Maximal degree in co-relation 6580. Up to 913 conditions per place. [2024-06-04 15:33:53,858 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 24 changer transitions 7/274 dead transitions. [2024-06-04 15:33:53,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 274 transitions, 2745 flow [2024-06-04 15:33:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 15:33:53,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 15:33:53,859 INFO L175 Difference]: Start difference. First operand has 332 places, 256 transitions, 2099 flow. Second operand 12 states and 142 transitions. [2024-06-04 15:33:53,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 274 transitions, 2745 flow [2024-06-04 15:33:54,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 274 transitions, 2695 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:33:54,373 INFO L231 Difference]: Finished difference. Result has 330 places, 253 transitions, 2079 flow [2024-06-04 15:33:54,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2049, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2079, PETRI_PLACES=330, PETRI_TRANSITIONS=253} [2024-06-04 15:33:54,374 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-04 15:33:54,374 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 253 transitions, 2079 flow [2024-06-04 15:33:54,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:54,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:54,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:54,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 15:33:54,374 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:54,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:54,374 INFO L85 PathProgramCache]: Analyzing trace with hash 39901203, now seen corresponding path program 10 times [2024-06-04 15:33:54,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:54,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159803803] [2024-06-04 15:33:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:54,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:56,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:56,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:56,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159803803] [2024-06-04 15:33:56,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159803803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:56,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:56,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:56,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250172450] [2024-06-04 15:33:56,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:56,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:56,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:56,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:56,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:56,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:56,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 253 transitions, 2079 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:56,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:56,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:56,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:57,148 INFO L124 PetriNetUnfolderBase]: 514/1025 cut-off events. [2024-06-04 15:33:57,148 INFO L125 PetriNetUnfolderBase]: For 130635/130635 co-relation queries the response was YES. [2024-06-04 15:33:57,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5445 conditions, 1025 events. 514/1025 cut-off events. For 130635/130635 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 5943 event pairs, 45 based on Foata normal form. 8/1031 useless extension candidates. Maximal degree in co-relation 5293. Up to 822 conditions per place. [2024-06-04 15:33:57,156 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 35 changer transitions 9/271 dead transitions. [2024-06-04 15:33:57,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 271 transitions, 2719 flow [2024-06-04 15:33:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:57,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:57,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 15:33:57,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-04 15:33:57,157 INFO L175 Difference]: Start difference. First operand has 330 places, 253 transitions, 2079 flow. Second operand 12 states and 146 transitions. [2024-06-04 15:33:57,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 271 transitions, 2719 flow [2024-06-04 15:33:57,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 271 transitions, 2665 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 15:33:57,475 INFO L231 Difference]: Finished difference. Result has 327 places, 250 transitions, 2076 flow [2024-06-04 15:33:57,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2076, PETRI_PLACES=327, PETRI_TRANSITIONS=250} [2024-06-04 15:33:57,475 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-04 15:33:57,475 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 250 transitions, 2076 flow [2024-06-04 15:33:57,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:57,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:57,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:57,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 15:33:57,475 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:57,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:57,476 INFO L85 PathProgramCache]: Analyzing trace with hash 267802353, now seen corresponding path program 11 times [2024-06-04 15:33:57,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:57,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80455995] [2024-06-04 15:33:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:57,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:58,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:58,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:58,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80455995] [2024-06-04 15:33:58,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80455995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:58,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:58,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:58,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670347998] [2024-06-04 15:33:58,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:58,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:58,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:58,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:58,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:58,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:33:58,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 250 transitions, 2076 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:58,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:58,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:33:58,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:59,525 INFO L124 PetriNetUnfolderBase]: 509/1022 cut-off events. [2024-06-04 15:33:59,526 INFO L125 PetriNetUnfolderBase]: For 128471/128471 co-relation queries the response was YES. [2024-06-04 15:33:59,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5418 conditions, 1022 events. 509/1022 cut-off events. For 128471/128471 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 5947 event pairs, 47 based on Foata normal form. 8/1028 useless extension candidates. Maximal degree in co-relation 5267. Up to 787 conditions per place. [2024-06-04 15:33:59,537 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 37 changer transitions 17/268 dead transitions. [2024-06-04 15:33:59,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 268 transitions, 2710 flow [2024-06-04 15:33:59,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:59,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-04 15:33:59,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-04 15:33:59,538 INFO L175 Difference]: Start difference. First operand has 327 places, 250 transitions, 2076 flow. Second operand 12 states and 149 transitions. [2024-06-04 15:33:59,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 268 transitions, 2710 flow [2024-06-04 15:33:59,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 268 transitions, 2636 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:33:59,862 INFO L231 Difference]: Finished difference. Result has 324 places, 240 transitions, 2001 flow [2024-06-04 15:33:59,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2001, PETRI_PLACES=324, PETRI_TRANSITIONS=240} [2024-06-04 15:33:59,863 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-04 15:33:59,863 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 240 transitions, 2001 flow [2024-06-04 15:33:59,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:59,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:59,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:59,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 15:33:59,863 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:59,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:59,863 INFO L85 PathProgramCache]: Analyzing trace with hash 276373233, now seen corresponding path program 12 times [2024-06-04 15:33:59,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:59,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294803868] [2024-06-04 15:33:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:59,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:01,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:01,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294803868] [2024-06-04 15:34:01,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294803868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:01,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:01,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:01,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022160457] [2024-06-04 15:34:01,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:01,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:01,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:01,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:01,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:01,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:01,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 240 transitions, 2001 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:01,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:01,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:01,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:02,027 INFO L124 PetriNetUnfolderBase]: 508/1035 cut-off events. [2024-06-04 15:34:02,027 INFO L125 PetriNetUnfolderBase]: For 168031/168031 co-relation queries the response was YES. [2024-06-04 15:34:02,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6451 conditions, 1035 events. 508/1035 cut-off events. For 168031/168031 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6029 event pairs, 57 based on Foata normal form. 6/1039 useless extension candidates. Maximal degree in co-relation 6301. Up to 689 conditions per place. [2024-06-04 15:34:02,038 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 34 changer transitions 9/262 dead transitions. [2024-06-04 15:34:02,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 262 transitions, 2907 flow [2024-06-04 15:34:02,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 15:34:02,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 15:34:02,039 INFO L175 Difference]: Start difference. First operand has 324 places, 240 transitions, 2001 flow. Second operand 11 states and 141 transitions. [2024-06-04 15:34:02,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 262 transitions, 2907 flow [2024-06-04 15:34:02,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 262 transitions, 2769 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-06-04 15:34:02,547 INFO L231 Difference]: Finished difference. Result has 314 places, 237 transitions, 1923 flow [2024-06-04 15:34:02,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1923, PETRI_PLACES=314, PETRI_TRANSITIONS=237} [2024-06-04 15:34:02,547 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-04 15:34:02,548 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 237 transitions, 1923 flow [2024-06-04 15:34:02,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:02,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:02,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:02,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 15:34:02,548 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:02,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:02,548 INFO L85 PathProgramCache]: Analyzing trace with hash 276084933, now seen corresponding path program 13 times [2024-06-04 15:34:02,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:02,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83773748] [2024-06-04 15:34:02,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:02,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:04,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:04,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83773748] [2024-06-04 15:34:04,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83773748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:04,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:04,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:04,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061619621] [2024-06-04 15:34:04,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:04,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:04,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:04,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:04,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:04,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:04,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 237 transitions, 1923 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:04,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:04,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:04,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:04,844 INFO L124 PetriNetUnfolderBase]: 498/1013 cut-off events. [2024-06-04 15:34:04,844 INFO L125 PetriNetUnfolderBase]: For 159485/159485 co-relation queries the response was YES. [2024-06-04 15:34:04,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6246 conditions, 1013 events. 498/1013 cut-off events. For 159485/159485 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5869 event pairs, 55 based on Foata normal form. 6/1017 useless extension candidates. Maximal degree in co-relation 6101. Up to 784 conditions per place. [2024-06-04 15:34:04,854 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 34 changer transitions 11/253 dead transitions. [2024-06-04 15:34:04,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 253 transitions, 2497 flow [2024-06-04 15:34:04,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:34:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:34:04,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 15:34:04,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-04 15:34:04,855 INFO L175 Difference]: Start difference. First operand has 314 places, 237 transitions, 1923 flow. Second operand 12 states and 139 transitions. [2024-06-04 15:34:04,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 253 transitions, 2497 flow [2024-06-04 15:34:05,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 253 transitions, 2431 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:34:05,382 INFO L231 Difference]: Finished difference. Result has 312 places, 233 transitions, 1899 flow [2024-06-04 15:34:05,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1899, PETRI_PLACES=312, PETRI_TRANSITIONS=233} [2024-06-04 15:34:05,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-04 15:34:05,382 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 233 transitions, 1899 flow [2024-06-04 15:34:05,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:05,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:05,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:05,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 15:34:05,383 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:05,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:05,383 INFO L85 PathProgramCache]: Analyzing trace with hash 368194589, now seen corresponding path program 14 times [2024-06-04 15:34:05,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:05,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92816352] [2024-06-04 15:34:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:05,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:06,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92816352] [2024-06-04 15:34:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92816352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:06,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:06,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:06,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947551506] [2024-06-04 15:34:06,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:06,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:06,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:06,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:06,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:06,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:06,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 233 transitions, 1899 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:06,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:06,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:06,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:07,175 INFO L124 PetriNetUnfolderBase]: 483/980 cut-off events. [2024-06-04 15:34:07,175 INFO L125 PetriNetUnfolderBase]: For 140377/140377 co-relation queries the response was YES. [2024-06-04 15:34:07,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5789 conditions, 980 events. 483/980 cut-off events. For 140377/140377 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5604 event pairs, 52 based on Foata normal form. 6/984 useless extension candidates. Maximal degree in co-relation 5646. Up to 782 conditions per place. [2024-06-04 15:34:07,185 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 204 selfloop transitions, 31 changer transitions 12/250 dead transitions. [2024-06-04 15:34:07,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 250 transitions, 2471 flow [2024-06-04 15:34:07,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:07,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:07,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 15:34:07,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 15:34:07,187 INFO L175 Difference]: Start difference. First operand has 312 places, 233 transitions, 1899 flow. Second operand 11 states and 133 transitions. [2024-06-04 15:34:07,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 250 transitions, 2471 flow [2024-06-04 15:34:07,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 250 transitions, 2379 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-04 15:34:07,606 INFO L231 Difference]: Finished difference. Result has 305 places, 228 transitions, 1840 flow [2024-06-04 15:34:07,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1840, PETRI_PLACES=305, PETRI_TRANSITIONS=228} [2024-06-04 15:34:07,606 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-04 15:34:07,606 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 228 transitions, 1840 flow [2024-06-04 15:34:07,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:07,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:07,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:07,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 15:34:07,607 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:07,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:07,607 INFO L85 PathProgramCache]: Analyzing trace with hash -268150141, now seen corresponding path program 21 times [2024-06-04 15:34:07,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:07,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079965276] [2024-06-04 15:34:07,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:07,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:09,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:09,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079965276] [2024-06-04 15:34:09,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079965276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:09,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:09,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:09,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559261457] [2024-06-04 15:34:09,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:09,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:09,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:09,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:09,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:09,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 228 transitions, 1840 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:09,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:09,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:09,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:09,984 INFO L124 PetriNetUnfolderBase]: 470/943 cut-off events. [2024-06-04 15:34:09,984 INFO L125 PetriNetUnfolderBase]: For 114867/114867 co-relation queries the response was YES. [2024-06-04 15:34:09,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5643 conditions, 943 events. 470/943 cut-off events. For 114867/114867 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5326 event pairs, 61 based on Foata normal form. 2/940 useless extension candidates. Maximal degree in co-relation 5501. Up to 565 conditions per place. [2024-06-04 15:34:09,994 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 122 selfloop transitions, 116 changer transitions 0/241 dead transitions. [2024-06-04 15:34:09,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 241 transitions, 2398 flow [2024-06-04 15:34:09,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:34:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:34:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 15:34:09,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 15:34:09,995 INFO L175 Difference]: Start difference. First operand has 305 places, 228 transitions, 1840 flow. Second operand 12 states and 148 transitions. [2024-06-04 15:34:09,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 241 transitions, 2398 flow [2024-06-04 15:34:10,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 241 transitions, 2303 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-04 15:34:10,332 INFO L231 Difference]: Finished difference. Result has 298 places, 229 transitions, 2022 flow [2024-06-04 15:34:10,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2022, PETRI_PLACES=298, PETRI_TRANSITIONS=229} [2024-06-04 15:34:10,332 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-04 15:34:10,332 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 229 transitions, 2022 flow [2024-06-04 15:34:10,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:10,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:10,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:10,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 15:34:10,333 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:10,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:10,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1970359301, now seen corresponding path program 22 times [2024-06-04 15:34:10,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:10,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360128322] [2024-06-04 15:34:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:10,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:11,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:11,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360128322] [2024-06-04 15:34:11,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360128322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:11,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:11,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:11,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088649105] [2024-06-04 15:34:11,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:11,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:11,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:11,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:11,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:12,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:12,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 229 transitions, 2022 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:12,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:12,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:12,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:12,463 INFO L124 PetriNetUnfolderBase]: 481/967 cut-off events. [2024-06-04 15:34:12,463 INFO L125 PetriNetUnfolderBase]: For 122639/122642 co-relation queries the response was YES. [2024-06-04 15:34:12,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6139 conditions, 967 events. 481/967 cut-off events. For 122639/122642 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5503 event pairs, 59 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 6001. Up to 679 conditions per place. [2024-06-04 15:34:12,473 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 168 selfloop transitions, 74 changer transitions 0/245 dead transitions. [2024-06-04 15:34:12,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 245 transitions, 2832 flow [2024-06-04 15:34:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 15:34:12,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-04 15:34:12,474 INFO L175 Difference]: Start difference. First operand has 298 places, 229 transitions, 2022 flow. Second operand 11 states and 139 transitions. [2024-06-04 15:34:12,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 245 transitions, 2832 flow [2024-06-04 15:34:12,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 245 transitions, 2568 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-04 15:34:12,885 INFO L231 Difference]: Finished difference. Result has 299 places, 231 transitions, 1986 flow [2024-06-04 15:34:12,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1986, PETRI_PLACES=299, PETRI_TRANSITIONS=231} [2024-06-04 15:34:12,885 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-04 15:34:12,885 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 231 transitions, 1986 flow [2024-06-04 15:34:12,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:12,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:12,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:12,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-04 15:34:12,886 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:12,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:12,886 INFO L85 PathProgramCache]: Analyzing trace with hash 89180931, now seen corresponding path program 23 times [2024-06-04 15:34:12,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:12,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653363423] [2024-06-04 15:34:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:12,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:14,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:14,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653363423] [2024-06-04 15:34:14,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653363423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:14,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:14,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:14,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061686004] [2024-06-04 15:34:14,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:14,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:14,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:14,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:14,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:14,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:14,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 231 transitions, 1986 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:14,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:14,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:14,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:14,725 INFO L124 PetriNetUnfolderBase]: 497/1003 cut-off events. [2024-06-04 15:34:14,725 INFO L125 PetriNetUnfolderBase]: For 172454/172457 co-relation queries the response was YES. [2024-06-04 15:34:14,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6291 conditions, 1003 events. 497/1003 cut-off events. For 172454/172457 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5756 event pairs, 65 based on Foata normal form. 10/1008 useless extension candidates. Maximal degree in co-relation 6152. Up to 611 conditions per place. [2024-06-04 15:34:14,733 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 101 changer transitions 6/247 dead transitions. [2024-06-04 15:34:14,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 247 transitions, 2602 flow [2024-06-04 15:34:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:14,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-04 15:34:14,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-04 15:34:14,733 INFO L175 Difference]: Start difference. First operand has 299 places, 231 transitions, 1986 flow. Second operand 11 states and 146 transitions. [2024-06-04 15:34:14,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 247 transitions, 2602 flow [2024-06-04 15:34:15,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 247 transitions, 2466 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 15:34:15,148 INFO L231 Difference]: Finished difference. Result has 303 places, 229 transitions, 2079 flow [2024-06-04 15:34:15,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2079, PETRI_PLACES=303, PETRI_TRANSITIONS=229} [2024-06-04 15:34:15,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-04 15:34:15,148 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 229 transitions, 2079 flow [2024-06-04 15:34:15,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:15,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:15,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:15,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-04 15:34:15,149 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:15,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:15,149 INFO L85 PathProgramCache]: Analyzing trace with hash 310825971, now seen corresponding path program 24 times [2024-06-04 15:34:15,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:15,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598441921] [2024-06-04 15:34:15,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:15,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:16,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:16,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598441921] [2024-06-04 15:34:16,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598441921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:16,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:16,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:16,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751100074] [2024-06-04 15:34:16,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:16,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:16,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:16,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:16,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:16,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:16,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 229 transitions, 2079 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:16,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:16,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:16,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:17,032 INFO L124 PetriNetUnfolderBase]: 496/1006 cut-off events. [2024-06-04 15:34:17,032 INFO L125 PetriNetUnfolderBase]: For 175364/175367 co-relation queries the response was YES. [2024-06-04 15:34:17,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6450 conditions, 1006 events. 496/1006 cut-off events. For 175364/175367 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5769 event pairs, 67 based on Foata normal form. 10/1011 useless extension candidates. Maximal degree in co-relation 6309. Up to 615 conditions per place. [2024-06-04 15:34:17,042 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 139 selfloop transitions, 96 changer transitions 7/245 dead transitions. [2024-06-04 15:34:17,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 245 transitions, 2689 flow [2024-06-04 15:34:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-04 15:34:17,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-04 15:34:17,043 INFO L175 Difference]: Start difference. First operand has 303 places, 229 transitions, 2079 flow. Second operand 11 states and 148 transitions. [2024-06-04 15:34:17,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 245 transitions, 2689 flow [2024-06-04 15:34:17,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 245 transitions, 2457 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-04 15:34:17,421 INFO L231 Difference]: Finished difference. Result has 303 places, 226 transitions, 2053 flow [2024-06-04 15:34:17,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2053, PETRI_PLACES=303, PETRI_TRANSITIONS=226} [2024-06-04 15:34:17,421 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-04 15:34:17,421 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 226 transitions, 2053 flow [2024-06-04 15:34:17,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:17,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:17,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:17,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-04 15:34:17,422 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:17,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:17,422 INFO L85 PathProgramCache]: Analyzing trace with hash -349047855, now seen corresponding path program 25 times [2024-06-04 15:34:17,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:17,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351679730] [2024-06-04 15:34:17,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:17,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:19,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:19,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:19,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351679730] [2024-06-04 15:34:19,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351679730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:19,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:19,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:19,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026745336] [2024-06-04 15:34:19,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:19,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:19,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:19,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:19,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:19,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:19,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 226 transitions, 2053 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:19,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:19,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:19,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:20,092 INFO L124 PetriNetUnfolderBase]: 481/975 cut-off events. [2024-06-04 15:34:20,092 INFO L125 PetriNetUnfolderBase]: For 127286/127289 co-relation queries the response was YES. [2024-06-04 15:34:20,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6270 conditions, 975 events. 481/975 cut-off events. For 127286/127289 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5567 event pairs, 63 based on Foata normal form. 2/972 useless extension candidates. Maximal degree in co-relation 6129. Up to 806 conditions per place. [2024-06-04 15:34:20,102 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 46 changer transitions 0/239 dead transitions. [2024-06-04 15:34:20,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 239 transitions, 2591 flow [2024-06-04 15:34:20,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:34:20,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 15:34:20,103 INFO L175 Difference]: Start difference. First operand has 303 places, 226 transitions, 2053 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:34:20,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 239 transitions, 2591 flow [2024-06-04 15:34:20,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 239 transitions, 2366 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-04 15:34:20,501 INFO L231 Difference]: Finished difference. Result has 304 places, 227 transitions, 1964 flow [2024-06-04 15:34:20,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1964, PETRI_PLACES=304, PETRI_TRANSITIONS=227} [2024-06-04 15:34:20,501 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-04 15:34:20,501 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 227 transitions, 1964 flow [2024-06-04 15:34:20,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:20,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:20,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:20,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-04 15:34:20,501 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:20,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:20,502 INFO L85 PathProgramCache]: Analyzing trace with hash -576949005, now seen corresponding path program 26 times [2024-06-04 15:34:20,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:20,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199545187] [2024-06-04 15:34:20,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:20,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:21,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:21,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199545187] [2024-06-04 15:34:21,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199545187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:21,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:21,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:21,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575532934] [2024-06-04 15:34:21,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:21,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:21,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:21,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:21,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:22,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:22,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 227 transitions, 1964 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:22,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:22,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:22,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:22,476 INFO L124 PetriNetUnfolderBase]: 485/979 cut-off events. [2024-06-04 15:34:22,476 INFO L125 PetriNetUnfolderBase]: For 129592/129595 co-relation queries the response was YES. [2024-06-04 15:34:22,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6223 conditions, 979 events. 485/979 cut-off events. For 129592/129595 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5595 event pairs, 61 based on Foata normal form. 2/976 useless extension candidates. Maximal degree in co-relation 6081. Up to 772 conditions per place. [2024-06-04 15:34:22,487 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 66 changer transitions 0/240 dead transitions. [2024-06-04 15:34:22,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 240 transitions, 2506 flow [2024-06-04 15:34:22,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:22,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 15:34:22,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-04 15:34:22,488 INFO L175 Difference]: Start difference. First operand has 304 places, 227 transitions, 1964 flow. Second operand 11 states and 139 transitions. [2024-06-04 15:34:22,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 240 transitions, 2506 flow [2024-06-04 15:34:22,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 240 transitions, 2380 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 15:34:22,912 INFO L231 Difference]: Finished difference. Result has 306 places, 228 transitions, 2016 flow [2024-06-04 15:34:22,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2016, PETRI_PLACES=306, PETRI_TRANSITIONS=228} [2024-06-04 15:34:22,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-04 15:34:22,913 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 228 transitions, 2016 flow [2024-06-04 15:34:22,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:22,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:22,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:22,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-04 15:34:22,914 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:22,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:22,914 INFO L85 PathProgramCache]: Analyzing trace with hash -586105903, now seen corresponding path program 27 times [2024-06-04 15:34:22,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:22,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798804918] [2024-06-04 15:34:22,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:22,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:24,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:24,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798804918] [2024-06-04 15:34:24,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798804918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:24,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:24,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:24,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236437196] [2024-06-04 15:34:24,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:24,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:24,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:24,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:24,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:24,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:24,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 228 transitions, 2016 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:24,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:24,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:24,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:24,929 INFO L124 PetriNetUnfolderBase]: 494/1001 cut-off events. [2024-06-04 15:34:24,929 INFO L125 PetriNetUnfolderBase]: For 168282/168282 co-relation queries the response was YES. [2024-06-04 15:34:24,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6115 conditions, 1001 events. 494/1001 cut-off events. For 168282/168282 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5778 event pairs, 61 based on Foata normal form. 10/1009 useless extension candidates. Maximal degree in co-relation 5972. Up to 859 conditions per place. [2024-06-04 15:34:24,936 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 207 selfloop transitions, 25 changer transitions 8/243 dead transitions. [2024-06-04 15:34:24,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 243 transitions, 2586 flow [2024-06-04 15:34:24,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:24,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:24,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 15:34:24,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 15:34:24,937 INFO L175 Difference]: Start difference. First operand has 306 places, 228 transitions, 2016 flow. Second operand 11 states and 133 transitions. [2024-06-04 15:34:24,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 243 transitions, 2586 flow [2024-06-04 15:34:25,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 243 transitions, 2390 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-04 15:34:25,363 INFO L231 Difference]: Finished difference. Result has 308 places, 223 transitions, 1839 flow [2024-06-04 15:34:25,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1839, PETRI_PLACES=308, PETRI_TRANSITIONS=223} [2024-06-04 15:34:25,363 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-04 15:34:25,363 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 223 transitions, 1839 flow [2024-06-04 15:34:25,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:25,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:25,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:25,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-04 15:34:25,363 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:25,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:25,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1621150459, now seen corresponding path program 28 times [2024-06-04 15:34:25,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:25,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214957394] [2024-06-04 15:34:25,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:25,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:26,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214957394] [2024-06-04 15:34:26,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214957394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:26,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:26,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:26,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174277628] [2024-06-04 15:34:26,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:26,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:26,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:26,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:26,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:26,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:26,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 223 transitions, 1839 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:26,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:26,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:26,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:27,367 INFO L124 PetriNetUnfolderBase]: 485/993 cut-off events. [2024-06-04 15:34:27,367 INFO L125 PetriNetUnfolderBase]: For 154636/154639 co-relation queries the response was YES. [2024-06-04 15:34:27,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5879 conditions, 993 events. 485/993 cut-off events. For 154636/154639 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5738 event pairs, 64 based on Foata normal form. 8/996 useless extension candidates. Maximal degree in co-relation 5735. Up to 836 conditions per place. [2024-06-04 15:34:27,378 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 203 selfloop transitions, 22 changer transitions 11/239 dead transitions. [2024-06-04 15:34:27,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 239 transitions, 2407 flow [2024-06-04 15:34:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:27,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:34:27,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:34:27,381 INFO L175 Difference]: Start difference. First operand has 308 places, 223 transitions, 1839 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:34:27,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 239 transitions, 2407 flow [2024-06-04 15:34:27,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 239 transitions, 2330 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 15:34:27,846 INFO L231 Difference]: Finished difference. Result has 307 places, 220 transitions, 1784 flow [2024-06-04 15:34:27,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1784, PETRI_PLACES=307, PETRI_TRANSITIONS=220} [2024-06-04 15:34:27,846 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-04 15:34:27,846 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 220 transitions, 1784 flow [2024-06-04 15:34:27,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:27,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:27,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:27,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-04 15:34:27,846 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:27,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:27,847 INFO L85 PathProgramCache]: Analyzing trace with hash -790428643, now seen corresponding path program 29 times [2024-06-04 15:34:27,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:27,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924871434] [2024-06-04 15:34:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:27,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:29,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:29,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:29,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924871434] [2024-06-04 15:34:29,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924871434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:29,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:29,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:29,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201202418] [2024-06-04 15:34:29,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:29,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:29,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:29,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:29,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:29,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:29,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 220 transitions, 1784 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:29,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:29,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:29,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:29,958 INFO L124 PetriNetUnfolderBase]: 499/1015 cut-off events. [2024-06-04 15:34:29,958 INFO L125 PetriNetUnfolderBase]: For 187610/187613 co-relation queries the response was YES. [2024-06-04 15:34:29,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7281 conditions, 1015 events. 499/1015 cut-off events. For 187610/187613 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5831 event pairs, 75 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 7137. Up to 726 conditions per place. [2024-06-04 15:34:29,969 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 67 changer transitions 0/239 dead transitions. [2024-06-04 15:34:29,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 239 transitions, 2666 flow [2024-06-04 15:34:29,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:29,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:29,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 15:34:29,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 15:34:29,970 INFO L175 Difference]: Start difference. First operand has 307 places, 220 transitions, 1784 flow. Second operand 11 states and 144 transitions. [2024-06-04 15:34:29,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 239 transitions, 2666 flow [2024-06-04 15:34:30,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 239 transitions, 2555 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:34:30,729 INFO L231 Difference]: Finished difference. Result has 302 places, 222 transitions, 1901 flow [2024-06-04 15:34:30,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1901, PETRI_PLACES=302, PETRI_TRANSITIONS=222} [2024-06-04 15:34:30,730 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-04 15:34:30,730 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 222 transitions, 1901 flow [2024-06-04 15:34:30,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:30,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:30,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:30,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-04 15:34:30,731 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:30,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:30,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1616566489, now seen corresponding path program 30 times [2024-06-04 15:34:30,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:30,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58342195] [2024-06-04 15:34:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:30,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:32,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:32,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58342195] [2024-06-04 15:34:32,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58342195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:32,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:32,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:32,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57669669] [2024-06-04 15:34:32,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:32,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:32,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:32,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:32,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:32,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:32,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 222 transitions, 1901 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:32,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:32,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:32,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:32,872 INFO L124 PetriNetUnfolderBase]: 503/1023 cut-off events. [2024-06-04 15:34:32,872 INFO L125 PetriNetUnfolderBase]: For 185546/185549 co-relation queries the response was YES. [2024-06-04 15:34:32,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7411 conditions, 1023 events. 503/1023 cut-off events. For 185546/185549 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5917 event pairs, 73 based on Foata normal form. 2/1020 useless extension candidates. Maximal degree in co-relation 7269. Up to 889 conditions per place. [2024-06-04 15:34:32,880 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 25 changer transitions 0/237 dead transitions. [2024-06-04 15:34:32,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 237 transitions, 2445 flow [2024-06-04 15:34:32,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:32,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:34:32,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:34:32,881 INFO L175 Difference]: Start difference. First operand has 302 places, 222 transitions, 1901 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:34:32,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 237 transitions, 2445 flow [2024-06-04 15:34:33,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 237 transitions, 2317 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 15:34:33,568 INFO L231 Difference]: Finished difference. Result has 306 places, 223 transitions, 1873 flow [2024-06-04 15:34:33,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1873, PETRI_PLACES=306, PETRI_TRANSITIONS=223} [2024-06-04 15:34:33,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-04 15:34:33,569 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 223 transitions, 1873 flow [2024-06-04 15:34:33,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:33,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:33,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:33,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-04 15:34:33,570 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:33,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:33,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1793817979, now seen corresponding path program 31 times [2024-06-04 15:34:33,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:33,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33415484] [2024-06-04 15:34:33,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:33,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:34,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:34,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33415484] [2024-06-04 15:34:34,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33415484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:34,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:34,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:34,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435698727] [2024-06-04 15:34:34,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:34,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:34,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:34,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:34,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:35,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:35,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 223 transitions, 1873 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:35,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:35,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:35,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:35,417 INFO L124 PetriNetUnfolderBase]: 519/1059 cut-off events. [2024-06-04 15:34:35,418 INFO L125 PetriNetUnfolderBase]: For 240661/240664 co-relation queries the response was YES. [2024-06-04 15:34:35,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7644 conditions, 1059 events. 519/1059 cut-off events. For 240661/240664 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6185 event pairs, 81 based on Foata normal form. 10/1064 useless extension candidates. Maximal degree in co-relation 7500. Up to 882 conditions per place. [2024-06-04 15:34:35,428 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 196 selfloop transitions, 34 changer transitions 6/239 dead transitions. [2024-06-04 15:34:35,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 239 transitions, 2481 flow [2024-06-04 15:34:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 15:34:35,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 15:34:35,429 INFO L175 Difference]: Start difference. First operand has 306 places, 223 transitions, 1873 flow. Second operand 11 states and 136 transitions. [2024-06-04 15:34:35,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 239 transitions, 2481 flow [2024-06-04 15:34:36,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 239 transitions, 2391 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 15:34:36,092 INFO L231 Difference]: Finished difference. Result has 308 places, 221 transitions, 1882 flow [2024-06-04 15:34:36,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1882, PETRI_PLACES=308, PETRI_TRANSITIONS=221} [2024-06-04 15:34:36,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-04 15:34:36,092 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 221 transitions, 1882 flow [2024-06-04 15:34:36,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:36,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:36,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:36,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-04 15:34:36,093 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:36,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:36,093 INFO L85 PathProgramCache]: Analyzing trace with hash -783994903, now seen corresponding path program 32 times [2024-06-04 15:34:36,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:36,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525912648] [2024-06-04 15:34:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:36,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:37,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:37,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525912648] [2024-06-04 15:34:37,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525912648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:37,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:37,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:37,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386136730] [2024-06-04 15:34:37,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:37,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:37,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:37,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:37,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:37,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:37,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 221 transitions, 1882 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:37,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:37,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:37,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:38,252 INFO L124 PetriNetUnfolderBase]: 499/1017 cut-off events. [2024-06-04 15:34:38,252 INFO L125 PetriNetUnfolderBase]: For 177650/177653 co-relation queries the response was YES. [2024-06-04 15:34:38,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7131 conditions, 1017 events. 499/1017 cut-off events. For 177650/177653 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5864 event pairs, 76 based on Foata normal form. 2/1014 useless extension candidates. Maximal degree in co-relation 6986. Up to 859 conditions per place. [2024-06-04 15:34:38,262 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 188 selfloop transitions, 42 changer transitions 0/233 dead transitions. [2024-06-04 15:34:38,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 233 transitions, 2370 flow [2024-06-04 15:34:38,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 15:34:38,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 15:34:38,263 INFO L175 Difference]: Start difference. First operand has 308 places, 221 transitions, 1882 flow. Second operand 11 states and 136 transitions. [2024-06-04 15:34:38,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 233 transitions, 2370 flow [2024-06-04 15:34:38,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 233 transitions, 2257 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-04 15:34:38,848 INFO L231 Difference]: Finished difference. Result has 309 places, 221 transitions, 1857 flow [2024-06-04 15:34:38,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1857, PETRI_PLACES=309, PETRI_TRANSITIONS=221} [2024-06-04 15:34:38,849 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-04 15:34:38,849 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 221 transitions, 1857 flow [2024-06-04 15:34:38,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:38,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:38,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:38,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-04 15:34:38,849 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:38,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:38,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1787561869, now seen corresponding path program 33 times [2024-06-04 15:34:38,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:38,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345492861] [2024-06-04 15:34:38,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:38,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:40,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:40,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345492861] [2024-06-04 15:34:40,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345492861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:40,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:40,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:40,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378680620] [2024-06-04 15:34:40,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:40,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:40,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:40,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:40,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:40,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:40,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 221 transitions, 1857 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:40,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:40,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:40,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:41,049 INFO L124 PetriNetUnfolderBase]: 503/1025 cut-off events. [2024-06-04 15:34:41,049 INFO L125 PetriNetUnfolderBase]: For 180703/180706 co-relation queries the response was YES. [2024-06-04 15:34:41,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7196 conditions, 1025 events. 503/1025 cut-off events. For 180703/180706 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5938 event pairs, 78 based on Foata normal form. 2/1022 useless extension candidates. Maximal degree in co-relation 7050. Up to 885 conditions per place. [2024-06-04 15:34:41,059 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 196 selfloop transitions, 35 changer transitions 0/234 dead transitions. [2024-06-04 15:34:41,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 234 transitions, 2395 flow [2024-06-04 15:34:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:41,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:41,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 15:34:41,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 15:34:41,060 INFO L175 Difference]: Start difference. First operand has 309 places, 221 transitions, 1857 flow. Second operand 11 states and 133 transitions. [2024-06-04 15:34:41,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 234 transitions, 2395 flow [2024-06-04 15:34:41,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 234 transitions, 2263 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-04 15:34:41,637 INFO L231 Difference]: Finished difference. Result has 310 places, 222 transitions, 1849 flow [2024-06-04 15:34:41,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1849, PETRI_PLACES=310, PETRI_TRANSITIONS=222} [2024-06-04 15:34:41,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-04 15:34:41,638 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 222 transitions, 1849 flow [2024-06-04 15:34:41,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:41,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:41,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:41,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-04 15:34:41,638 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:41,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1787384239, now seen corresponding path program 34 times [2024-06-04 15:34:41,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:41,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859684751] [2024-06-04 15:34:41,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:41,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:43,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:43,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859684751] [2024-06-04 15:34:43,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859684751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:43,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:43,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:43,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630039784] [2024-06-04 15:34:43,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:43,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:43,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:43,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:43,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:43,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:43,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 222 transitions, 1849 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:43,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:43,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:43,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:43,651 INFO L124 PetriNetUnfolderBase]: 500/1020 cut-off events. [2024-06-04 15:34:43,652 INFO L125 PetriNetUnfolderBase]: For 168914/168917 co-relation queries the response was YES. [2024-06-04 15:34:43,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6831 conditions, 1020 events. 500/1020 cut-off events. For 168914/168917 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5931 event pairs, 75 based on Foata normal form. 2/1017 useless extension candidates. Maximal degree in co-relation 6684. Up to 860 conditions per place. [2024-06-04 15:34:43,662 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 195 selfloop transitions, 37 changer transitions 0/235 dead transitions. [2024-06-04 15:34:43,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 235 transitions, 2343 flow [2024-06-04 15:34:43,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:43,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:34:43,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 15:34:43,663 INFO L175 Difference]: Start difference. First operand has 310 places, 222 transitions, 1849 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:34:43,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 235 transitions, 2343 flow [2024-06-04 15:34:44,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 235 transitions, 2229 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 15:34:44,284 INFO L231 Difference]: Finished difference. Result has 312 places, 222 transitions, 1813 flow [2024-06-04 15:34:44,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1735, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1813, PETRI_PLACES=312, PETRI_TRANSITIONS=222} [2024-06-04 15:34:44,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-04 15:34:44,285 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 222 transitions, 1813 flow [2024-06-04 15:34:44,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:44,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:44,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:44,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-04 15:34:44,285 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:44,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:44,286 INFO L85 PathProgramCache]: Analyzing trace with hash -562342919, now seen corresponding path program 15 times [2024-06-04 15:34:44,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:44,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334518675] [2024-06-04 15:34:44,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:44,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:46,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:46,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334518675] [2024-06-04 15:34:46,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334518675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:46,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:46,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:46,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277679687] [2024-06-04 15:34:46,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:46,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:46,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:46,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:46,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:46,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:46,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 222 transitions, 1813 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:46,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:46,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:46,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:46,830 INFO L124 PetriNetUnfolderBase]: 512/1052 cut-off events. [2024-06-04 15:34:46,830 INFO L125 PetriNetUnfolderBase]: For 214358/214361 co-relation queries the response was YES. [2024-06-04 15:34:46,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6950 conditions, 1052 events. 512/1052 cut-off events. For 214358/214361 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6185 event pairs, 83 based on Foata normal form. 8/1055 useless extension candidates. Maximal degree in co-relation 6802. Up to 825 conditions per place. [2024-06-04 15:34:46,841 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 170 selfloop transitions, 56 changer transitions 9/238 dead transitions. [2024-06-04 15:34:46,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 238 transitions, 2375 flow [2024-06-04 15:34:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:34:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:34:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-04 15:34:46,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-04 15:34:46,842 INFO L175 Difference]: Start difference. First operand has 312 places, 222 transitions, 1813 flow. Second operand 12 states and 149 transitions. [2024-06-04 15:34:46,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 238 transitions, 2375 flow [2024-06-04 15:34:47,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 238 transitions, 2100 flow, removed 24 selfloop flow, removed 13 redundant places. [2024-06-04 15:34:47,437 INFO L231 Difference]: Finished difference. Result has 311 places, 219 transitions, 1632 flow [2024-06-04 15:34:47,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1632, PETRI_PLACES=311, PETRI_TRANSITIONS=219} [2024-06-04 15:34:47,437 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-06-04 15:34:47,437 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 219 transitions, 1632 flow [2024-06-04 15:34:47,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:47,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:47,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:47,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-04 15:34:47,438 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:47,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:47,438 INFO L85 PathProgramCache]: Analyzing trace with hash -231321131, now seen corresponding path program 16 times [2024-06-04 15:34:47,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:47,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242794835] [2024-06-04 15:34:47,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:47,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:49,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242794835] [2024-06-04 15:34:49,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242794835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:49,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:49,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:49,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397281594] [2024-06-04 15:34:49,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:49,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:49,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:49,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:49,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:49,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:49,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 219 transitions, 1632 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:49,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:49,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:49,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:49,701 INFO L124 PetriNetUnfolderBase]: 503/1041 cut-off events. [2024-06-04 15:34:49,701 INFO L125 PetriNetUnfolderBase]: For 201167/201170 co-relation queries the response was YES. [2024-06-04 15:34:49,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 1041 events. 503/1041 cut-off events. For 201167/201170 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6148 event pairs, 79 based on Foata normal form. 6/1042 useless extension candidates. Maximal degree in co-relation 6422. Up to 795 conditions per place. [2024-06-04 15:34:49,711 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 198 selfloop transitions, 30 changer transitions 7/238 dead transitions. [2024-06-04 15:34:49,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 238 transitions, 2478 flow [2024-06-04 15:34:49,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:49,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:49,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:34:49,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:34:49,712 INFO L175 Difference]: Start difference. First operand has 311 places, 219 transitions, 1632 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:34:49,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 238 transitions, 2478 flow [2024-06-04 15:34:50,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 238 transitions, 2308 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-04 15:34:50,274 INFO L231 Difference]: Finished difference. Result has 307 places, 216 transitions, 1512 flow [2024-06-04 15:34:50,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1512, PETRI_PLACES=307, PETRI_TRANSITIONS=216} [2024-06-04 15:34:50,274 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-04 15:34:50,274 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 216 transitions, 1512 flow [2024-06-04 15:34:50,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:50,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:50,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:50,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-04 15:34:50,274 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:50,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:50,275 INFO L85 PathProgramCache]: Analyzing trace with hash -562103909, now seen corresponding path program 17 times [2024-06-04 15:34:50,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:50,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964460145] [2024-06-04 15:34:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:50,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:52,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:52,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:52,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964460145] [2024-06-04 15:34:52,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964460145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:52,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:52,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:52,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534877501] [2024-06-04 15:34:52,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:52,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:52,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:52,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:52,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:52,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:52,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 216 transitions, 1512 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:52,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:52,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:52,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:52,832 INFO L124 PetriNetUnfolderBase]: 518/1074 cut-off events. [2024-06-04 15:34:52,832 INFO L125 PetriNetUnfolderBase]: For 252883/252886 co-relation queries the response was YES. [2024-06-04 15:34:52,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7555 conditions, 1074 events. 518/1074 cut-off events. For 252883/252886 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6360 event pairs, 93 based on Foata normal form. 6/1075 useless extension candidates. Maximal degree in co-relation 7411. Up to 818 conditions per place. [2024-06-04 15:34:52,843 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 185 selfloop transitions, 42 changer transitions 6/236 dead transitions. [2024-06-04 15:34:52,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 236 transitions, 2350 flow [2024-06-04 15:34:52,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:34:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:34:52,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 15:34:52,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:34:52,844 INFO L175 Difference]: Start difference. First operand has 307 places, 216 transitions, 1512 flow. Second operand 12 states and 152 transitions. [2024-06-04 15:34:52,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 236 transitions, 2350 flow [2024-06-04 15:34:53,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 236 transitions, 2283 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:34:53,570 INFO L231 Difference]: Finished difference. Result has 306 places, 214 transitions, 1522 flow [2024-06-04 15:34:53,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1522, PETRI_PLACES=306, PETRI_TRANSITIONS=214} [2024-06-04 15:34:53,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-04 15:34:53,571 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 214 transitions, 1522 flow [2024-06-04 15:34:53,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:53,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:53,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:53,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-04 15:34:53,571 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:53,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:53,571 INFO L85 PathProgramCache]: Analyzing trace with hash -348810271, now seen corresponding path program 18 times [2024-06-04 15:34:53,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:53,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531374756] [2024-06-04 15:34:53,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:53,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:55,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:55,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531374756] [2024-06-04 15:34:55,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531374756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:55,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:55,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:55,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977556691] [2024-06-04 15:34:55,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:55,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:55,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:55,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:55,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:55,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:55,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 214 transitions, 1522 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:55,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:55,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:55,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:55,903 INFO L124 PetriNetUnfolderBase]: 521/1079 cut-off events. [2024-06-04 15:34:55,903 INFO L125 PetriNetUnfolderBase]: For 306285/306288 co-relation queries the response was YES. [2024-06-04 15:34:55,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7370 conditions, 1079 events. 521/1079 cut-off events. For 306285/306288 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6380 event pairs, 96 based on Foata normal form. 16/1090 useless extension candidates. Maximal degree in co-relation 7227. Up to 824 conditions per place. [2024-06-04 15:34:55,917 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 167 selfloop transitions, 49 changer transitions 10/229 dead transitions. [2024-06-04 15:34:55,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 229 transitions, 2062 flow [2024-06-04 15:34:55,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:55,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 15:34:55,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-04 15:34:55,918 INFO L175 Difference]: Start difference. First operand has 306 places, 214 transitions, 1522 flow. Second operand 11 states and 139 transitions. [2024-06-04 15:34:55,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 229 transitions, 2062 flow [2024-06-04 15:34:56,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 229 transitions, 1977 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:34:56,696 INFO L231 Difference]: Finished difference. Result has 304 places, 207 transitions, 1496 flow [2024-06-04 15:34:56,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1496, PETRI_PLACES=304, PETRI_TRANSITIONS=207} [2024-06-04 15:34:56,697 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-04 15:34:56,697 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 207 transitions, 1496 flow [2024-06-04 15:34:56,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:56,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:56,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:56,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-04 15:34:56,698 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:34:56,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:56,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1757241867, now seen corresponding path program 19 times [2024-06-04 15:34:56,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:56,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409366228] [2024-06-04 15:34:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:56,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:59,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:59,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409366228] [2024-06-04 15:34:59,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409366228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:59,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:59,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:59,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740479849] [2024-06-04 15:34:59,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:59,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:59,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:59,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:59,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:59,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:34:59,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 207 transitions, 1496 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:34:59,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:59,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:34:59,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:00,052 INFO L124 PetriNetUnfolderBase]: 498/1028 cut-off events. [2024-06-04 15:35:00,053 INFO L125 PetriNetUnfolderBase]: For 246518/246521 co-relation queries the response was YES. [2024-06-04 15:35:00,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7123 conditions, 1028 events. 498/1028 cut-off events. For 246518/246521 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6001 event pairs, 98 based on Foata normal form. 8/1030 useless extension candidates. Maximal degree in co-relation 6981. Up to 671 conditions per place. [2024-06-04 15:35:00,060 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 86 changer transitions 9/220 dead transitions. [2024-06-04 15:35:00,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 220 transitions, 2010 flow [2024-06-04 15:35:00,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:00,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:00,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-04 15:35:00,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-04 15:35:00,061 INFO L175 Difference]: Start difference. First operand has 304 places, 207 transitions, 1496 flow. Second operand 12 states and 149 transitions. [2024-06-04 15:35:00,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 220 transitions, 2010 flow [2024-06-04 15:35:00,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 220 transitions, 1904 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-04 15:35:00,811 INFO L231 Difference]: Finished difference. Result has 300 places, 204 transitions, 1549 flow [2024-06-04 15:35:00,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1390, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1549, PETRI_PLACES=300, PETRI_TRANSITIONS=204} [2024-06-04 15:35:00,811 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-04 15:35:00,812 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 204 transitions, 1549 flow [2024-06-04 15:35:00,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:00,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:00,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:00,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-04 15:35:00,812 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:00,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:00,813 INFO L85 PathProgramCache]: Analyzing trace with hash -576942061, now seen corresponding path program 20 times [2024-06-04 15:35:00,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:00,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639064957] [2024-06-04 15:35:00,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:00,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:02,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:02,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639064957] [2024-06-04 15:35:02,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639064957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:02,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:02,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:02,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114018736] [2024-06-04 15:35:02,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:02,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:02,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:02,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:02,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:03,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:03,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 204 transitions, 1549 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:03,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:03,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:03,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:03,826 INFO L124 PetriNetUnfolderBase]: 493/1027 cut-off events. [2024-06-04 15:35:03,826 INFO L125 PetriNetUnfolderBase]: For 239315/239318 co-relation queries the response was YES. [2024-06-04 15:35:03,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7108 conditions, 1027 events. 493/1027 cut-off events. For 239315/239318 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6018 event pairs, 96 based on Foata normal form. 8/1030 useless extension candidates. Maximal degree in co-relation 6968. Up to 813 conditions per place. [2024-06-04 15:35:03,834 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 48 changer transitions 7/220 dead transitions. [2024-06-04 15:35:03,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 220 transitions, 2073 flow [2024-06-04 15:35:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:03,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:03,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 15:35:03,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:35:03,835 INFO L175 Difference]: Start difference. First operand has 300 places, 204 transitions, 1549 flow. Second operand 12 states and 152 transitions. [2024-06-04 15:35:03,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 220 transitions, 2073 flow [2024-06-04 15:35:04,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 220 transitions, 1897 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:04,419 INFO L231 Difference]: Finished difference. Result has 298 places, 201 transitions, 1453 flow [2024-06-04 15:35:04,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1453, PETRI_PLACES=298, PETRI_TRANSITIONS=201} [2024-06-04 15:35:04,420 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-04 15:35:04,420 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 201 transitions, 1453 flow [2024-06-04 15:35:04,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:04,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:04,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:04,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-04 15:35:04,420 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:04,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:04,421 INFO L85 PathProgramCache]: Analyzing trace with hash 311071925, now seen corresponding path program 21 times [2024-06-04 15:35:04,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:04,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446698045] [2024-06-04 15:35:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:04,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:05,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:05,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:05,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446698045] [2024-06-04 15:35:05,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446698045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:05,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:05,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:05,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116195945] [2024-06-04 15:35:05,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:05,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:05,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:05,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:05,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:06,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:06,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 201 transitions, 1453 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:06,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:06,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:06,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:06,505 INFO L124 PetriNetUnfolderBase]: 506/1062 cut-off events. [2024-06-04 15:35:06,505 INFO L125 PetriNetUnfolderBase]: For 271040/271043 co-relation queries the response was YES. [2024-06-04 15:35:06,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8106 conditions, 1062 events. 506/1062 cut-off events. For 271040/271043 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6295 event pairs, 104 based on Foata normal form. 6/1063 useless extension candidates. Maximal degree in co-relation 7967. Up to 728 conditions per place. [2024-06-04 15:35:06,515 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 150 selfloop transitions, 61 changer transitions 7/221 dead transitions. [2024-06-04 15:35:06,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 221 transitions, 2251 flow [2024-06-04 15:35:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:06,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-04 15:35:06,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-04 15:35:06,516 INFO L175 Difference]: Start difference. First operand has 298 places, 201 transitions, 1453 flow. Second operand 12 states and 155 transitions. [2024-06-04 15:35:06,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 221 transitions, 2251 flow [2024-06-04 15:35:07,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 221 transitions, 2145 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:35:07,397 INFO L231 Difference]: Finished difference. Result has 296 places, 198 transitions, 1461 flow [2024-06-04 15:35:07,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1461, PETRI_PLACES=296, PETRI_TRANSITIONS=198} [2024-06-04 15:35:07,397 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-04 15:35:07,397 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 198 transitions, 1461 flow [2024-06-04 15:35:07,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:07,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:07,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:07,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-04 15:35:07,398 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:07,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:07,399 INFO L85 PathProgramCache]: Analyzing trace with hash 89426885, now seen corresponding path program 22 times [2024-06-04 15:35:07,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:07,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630272556] [2024-06-04 15:35:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:07,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:10,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:10,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630272556] [2024-06-04 15:35:10,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630272556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:10,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:10,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:10,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004477278] [2024-06-04 15:35:10,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:10,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:10,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:10,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:10,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:10,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:10,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 198 transitions, 1461 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:10,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:10,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:10,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:11,093 INFO L124 PetriNetUnfolderBase]: 521/1093 cut-off events. [2024-06-04 15:35:11,094 INFO L125 PetriNetUnfolderBase]: For 317907/317910 co-relation queries the response was YES. [2024-06-04 15:35:11,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9213 conditions, 1093 events. 521/1093 cut-off events. For 317907/317910 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6567 event pairs, 122 based on Foata normal form. 6/1093 useless extension candidates. Maximal degree in co-relation 9075. Up to 720 conditions per place. [2024-06-04 15:35:11,108 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 144 selfloop transitions, 61 changer transitions 7/215 dead transitions. [2024-06-04 15:35:11,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 215 transitions, 2235 flow [2024-06-04 15:35:11,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:11,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 15:35:11,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:35:11,109 INFO L175 Difference]: Start difference. First operand has 296 places, 198 transitions, 1461 flow. Second operand 12 states and 150 transitions. [2024-06-04 15:35:11,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 215 transitions, 2235 flow [2024-06-04 15:35:12,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 215 transitions, 2107 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:12,245 INFO L231 Difference]: Finished difference. Result has 294 places, 195 transitions, 1447 flow [2024-06-04 15:35:12,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1447, PETRI_PLACES=294, PETRI_TRANSITIONS=195} [2024-06-04 15:35:12,245 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-04 15:35:12,246 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 195 transitions, 1447 flow [2024-06-04 15:35:12,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:12,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:12,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:12,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-04 15:35:12,246 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:12,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash -340470031, now seen corresponding path program 23 times [2024-06-04 15:35:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:12,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515509036] [2024-06-04 15:35:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:12,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:13,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:13,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515509036] [2024-06-04 15:35:13,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515509036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:13,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:13,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:13,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207311132] [2024-06-04 15:35:13,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:13,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:13,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:13,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:13,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:14,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:14,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 195 transitions, 1447 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:14,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:14,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:14,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:14,552 INFO L124 PetriNetUnfolderBase]: 551/1163 cut-off events. [2024-06-04 15:35:14,552 INFO L125 PetriNetUnfolderBase]: For 399435/399438 co-relation queries the response was YES. [2024-06-04 15:35:14,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11093 conditions, 1163 events. 551/1163 cut-off events. For 399435/399438 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7100 event pairs, 147 based on Foata normal form. 6/1163 useless extension candidates. Maximal degree in co-relation 10956. Up to 800 conditions per place. [2024-06-04 15:35:14,564 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 46 changer transitions 9/213 dead transitions. [2024-06-04 15:35:14,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 213 transitions, 2217 flow [2024-06-04 15:35:14,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:14,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 15:35:14,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 15:35:14,565 INFO L175 Difference]: Start difference. First operand has 294 places, 195 transitions, 1447 flow. Second operand 12 states and 148 transitions. [2024-06-04 15:35:14,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 213 transitions, 2217 flow [2024-06-04 15:35:15,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 213 transitions, 2091 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:15,656 INFO L231 Difference]: Finished difference. Result has 292 places, 192 transitions, 1402 flow [2024-06-04 15:35:15,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1402, PETRI_PLACES=292, PETRI_TRANSITIONS=192} [2024-06-04 15:35:15,657 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-04 15:35:15,657 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 192 transitions, 1402 flow [2024-06-04 15:35:15,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:15,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:15,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:15,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-04 15:35:15,657 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:15,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:15,658 INFO L85 PathProgramCache]: Analyzing trace with hash -340758331, now seen corresponding path program 24 times [2024-06-04 15:35:15,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:15,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83071738] [2024-06-04 15:35:15,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:15,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:17,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:17,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83071738] [2024-06-04 15:35:17,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83071738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:17,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:17,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:17,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997919913] [2024-06-04 15:35:17,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:17,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:17,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:17,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:17,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:17,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:17,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 192 transitions, 1402 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:17,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:17,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:17,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:17,610 INFO L124 PetriNetUnfolderBase]: 541/1145 cut-off events. [2024-06-04 15:35:17,610 INFO L125 PetriNetUnfolderBase]: For 391532/391535 co-relation queries the response was YES. [2024-06-04 15:35:17,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10960 conditions, 1145 events. 541/1145 cut-off events. For 391532/391535 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6956 event pairs, 147 based on Foata normal form. 6/1145 useless extension candidates. Maximal degree in co-relation 10824. Up to 918 conditions per place. [2024-06-04 15:35:17,622 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 147 selfloop transitions, 44 changer transitions 11/205 dead transitions. [2024-06-04 15:35:17,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 205 transitions, 1866 flow [2024-06-04 15:35:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:17,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 15:35:17,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 15:35:17,623 INFO L175 Difference]: Start difference. First operand has 292 places, 192 transitions, 1402 flow. Second operand 12 states and 142 transitions. [2024-06-04 15:35:17,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 205 transitions, 1866 flow [2024-06-04 15:35:18,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 205 transitions, 1778 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:18,657 INFO L231 Difference]: Finished difference. Result has 289 places, 188 transitions, 1379 flow [2024-06-04 15:35:18,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1379, PETRI_PLACES=289, PETRI_TRANSITIONS=188} [2024-06-04 15:35:18,658 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-04 15:35:18,658 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 188 transitions, 1379 flow [2024-06-04 15:35:18,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:18,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:18,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:18,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-04 15:35:18,659 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:18,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:18,659 INFO L85 PathProgramCache]: Analyzing trace with hash -570446941, now seen corresponding path program 25 times [2024-06-04 15:35:18,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:18,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591134508] [2024-06-04 15:35:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:18,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:20,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:20,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591134508] [2024-06-04 15:35:20,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591134508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:20,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:20,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:20,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731099753] [2024-06-04 15:35:20,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:20,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:20,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:20,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:20,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:20,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:20,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 188 transitions, 1379 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:20,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:20,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:20,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:21,000 INFO L124 PetriNetUnfolderBase]: 533/1125 cut-off events. [2024-06-04 15:35:21,000 INFO L125 PetriNetUnfolderBase]: For 377727/377730 co-relation queries the response was YES. [2024-06-04 15:35:21,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10800 conditions, 1125 events. 533/1125 cut-off events. For 377727/377730 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6778 event pairs, 145 based on Foata normal form. 6/1125 useless extension candidates. Maximal degree in co-relation 10666. Up to 860 conditions per place. [2024-06-04 15:35:21,012 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 158 selfloop transitions, 38 changer transitions 6/205 dead transitions. [2024-06-04 15:35:21,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 205 transitions, 2125 flow [2024-06-04 15:35:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:21,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:21,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-04 15:35:21,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 15:35:21,013 INFO L175 Difference]: Start difference. First operand has 289 places, 188 transitions, 1379 flow. Second operand 12 states and 147 transitions. [2024-06-04 15:35:21,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 205 transitions, 2125 flow [2024-06-04 15:35:22,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 205 transitions, 2011 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:35:22,125 INFO L231 Difference]: Finished difference. Result has 284 places, 186 transitions, 1333 flow [2024-06-04 15:35:22,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1333, PETRI_PLACES=284, PETRI_TRANSITIONS=186} [2024-06-04 15:35:22,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-04 15:35:22,126 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 186 transitions, 1333 flow [2024-06-04 15:35:22,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:22,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:22,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:22,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-04 15:35:22,126 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:22,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:22,126 INFO L85 PathProgramCache]: Analyzing trace with hash 89187875, now seen corresponding path program 26 times [2024-06-04 15:35:22,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:22,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24645931] [2024-06-04 15:35:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:22,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:23,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:23,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24645931] [2024-06-04 15:35:23,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24645931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:23,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:23,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:23,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913099851] [2024-06-04 15:35:23,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:23,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:23,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:23,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:23,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:23,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:23,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 186 transitions, 1333 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:23,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:23,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:23,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:24,503 INFO L124 PetriNetUnfolderBase]: 524/1108 cut-off events. [2024-06-04 15:35:24,503 INFO L125 PetriNetUnfolderBase]: For 372695/372698 co-relation queries the response was YES. [2024-06-04 15:35:24,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10393 conditions, 1108 events. 524/1108 cut-off events. For 372695/372698 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6643 event pairs, 144 based on Foata normal form. 8/1111 useless extension candidates. Maximal degree in co-relation 10260. Up to 829 conditions per place. [2024-06-04 15:35:24,515 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 58 changer transitions 9/202 dead transitions. [2024-06-04 15:35:24,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 202 transitions, 1821 flow [2024-06-04 15:35:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:24,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-04 15:35:24,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-04 15:35:24,516 INFO L175 Difference]: Start difference. First operand has 284 places, 186 transitions, 1333 flow. Second operand 12 states and 149 transitions. [2024-06-04 15:35:24,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 202 transitions, 1821 flow [2024-06-04 15:35:25,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 202 transitions, 1739 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:25,728 INFO L231 Difference]: Finished difference. Result has 283 places, 183 transitions, 1352 flow [2024-06-04 15:35:25,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1352, PETRI_PLACES=283, PETRI_TRANSITIONS=183} [2024-06-04 15:35:25,729 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-04 15:35:25,729 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 183 transitions, 1352 flow [2024-06-04 15:35:25,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:25,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:25,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:25,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-04 15:35:25,731 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:25,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:25,731 INFO L85 PathProgramCache]: Analyzing trace with hash -570685951, now seen corresponding path program 27 times [2024-06-04 15:35:25,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:25,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213853404] [2024-06-04 15:35:25,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:25,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:27,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:27,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213853404] [2024-06-04 15:35:27,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213853404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:27,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:27,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:27,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381134859] [2024-06-04 15:35:27,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:27,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:27,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:27,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:27,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:27,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:27,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 183 transitions, 1352 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:27,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:27,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:27,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:28,485 INFO L124 PetriNetUnfolderBase]: 519/1101 cut-off events. [2024-06-04 15:35:28,485 INFO L125 PetriNetUnfolderBase]: For 363594/363597 co-relation queries the response was YES. [2024-06-04 15:35:28,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10355 conditions, 1101 events. 519/1101 cut-off events. For 363594/363597 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6594 event pairs, 144 based on Foata normal form. 8/1104 useless extension candidates. Maximal degree in co-relation 10223. Up to 914 conditions per place. [2024-06-04 15:35:28,496 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 152 selfloop transitions, 35 changer transitions 9/199 dead transitions. [2024-06-04 15:35:28,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 199 transitions, 1834 flow [2024-06-04 15:35:28,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:28,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-04 15:35:28,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 15:35:28,497 INFO L175 Difference]: Start difference. First operand has 283 places, 183 transitions, 1352 flow. Second operand 12 states and 147 transitions. [2024-06-04 15:35:28,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 199 transitions, 1834 flow [2024-06-04 15:35:29,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 199 transitions, 1710 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:29,730 INFO L231 Difference]: Finished difference. Result has 281 places, 180 transitions, 1278 flow [2024-06-04 15:35:29,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1278, PETRI_PLACES=281, PETRI_TRANSITIONS=180} [2024-06-04 15:35:29,731 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-04 15:35:29,731 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 180 transitions, 1278 flow [2024-06-04 15:35:29,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:29,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:29,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:29,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-04 15:35:29,732 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:29,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:29,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1956687951, now seen corresponding path program 28 times [2024-06-04 15:35:29,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:29,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772929800] [2024-06-04 15:35:29,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:29,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:31,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:31,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772929800] [2024-06-04 15:35:31,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772929800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:31,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:31,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:31,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120050115] [2024-06-04 15:35:31,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:31,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:31,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:31,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:31,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:31,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:31,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 180 transitions, 1278 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:31,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:31,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:31,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:32,125 INFO L124 PetriNetUnfolderBase]: 510/1088 cut-off events. [2024-06-04 15:35:32,125 INFO L125 PetriNetUnfolderBase]: For 343287/343290 co-relation queries the response was YES. [2024-06-04 15:35:32,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10112 conditions, 1088 events. 510/1088 cut-off events. For 343287/343290 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6506 event pairs, 144 based on Foata normal form. 6/1088 useless extension candidates. Maximal degree in co-relation 9981. Up to 782 conditions per place. [2024-06-04 15:35:32,135 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 123 selfloop transitions, 57 changer transitions 10/193 dead transitions. [2024-06-04 15:35:32,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 193 transitions, 1718 flow [2024-06-04 15:35:32,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:32,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:32,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 15:35:32,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-04 15:35:32,137 INFO L175 Difference]: Start difference. First operand has 281 places, 180 transitions, 1278 flow. Second operand 12 states and 146 transitions. [2024-06-04 15:35:32,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 193 transitions, 1718 flow [2024-06-04 15:35:33,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 193 transitions, 1644 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:33,529 INFO L231 Difference]: Finished difference. Result has 279 places, 177 transitions, 1306 flow [2024-06-04 15:35:33,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1306, PETRI_PLACES=279, PETRI_TRANSITIONS=177} [2024-06-04 15:35:33,529 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-04 15:35:33,529 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 177 transitions, 1306 flow [2024-06-04 15:35:33,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:33,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:33,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:33,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-04 15:35:33,530 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:33,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:33,530 INFO L85 PathProgramCache]: Analyzing trace with hash 310832915, now seen corresponding path program 29 times [2024-06-04 15:35:33,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:33,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30547021] [2024-06-04 15:35:33,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:33,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:35,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:35,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30547021] [2024-06-04 15:35:35,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30547021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:35,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:35,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:35,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3143363] [2024-06-04 15:35:35,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:35,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:35,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:35,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:35,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:35,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:35,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 177 transitions, 1306 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:35,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:35,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:35,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:36,447 INFO L124 PetriNetUnfolderBase]: 485/1035 cut-off events. [2024-06-04 15:35:36,447 INFO L125 PetriNetUnfolderBase]: For 307419/307422 co-relation queries the response was YES. [2024-06-04 15:35:36,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9010 conditions, 1035 events. 485/1035 cut-off events. For 307419/307422 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6126 event pairs, 132 based on Foata normal form. 8/1038 useless extension candidates. Maximal degree in co-relation 8880. Up to 756 conditions per place. [2024-06-04 15:35:36,458 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 55 changer transitions 9/193 dead transitions. [2024-06-04 15:35:36,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 193 transitions, 1774 flow [2024-06-04 15:35:36,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:36,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:36,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 15:35:36,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:35:36,459 INFO L175 Difference]: Start difference. First operand has 279 places, 177 transitions, 1306 flow. Second operand 12 states and 150 transitions. [2024-06-04 15:35:36,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 193 transitions, 1774 flow [2024-06-04 15:35:37,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 193 transitions, 1656 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:35:37,450 INFO L231 Difference]: Finished difference. Result has 276 places, 174 transitions, 1284 flow [2024-06-04 15:35:37,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1284, PETRI_PLACES=276, PETRI_TRANSITIONS=174} [2024-06-04 15:35:37,450 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-04 15:35:37,450 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 174 transitions, 1284 flow [2024-06-04 15:35:37,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:37,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:37,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:37,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-04 15:35:37,451 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:37,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:37,451 INFO L85 PathProgramCache]: Analyzing trace with hash -570455311, now seen corresponding path program 30 times [2024-06-04 15:35:37,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:37,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457625745] [2024-06-04 15:35:37,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:37,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:39,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:39,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457625745] [2024-06-04 15:35:39,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457625745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:39,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:39,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:39,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779015872] [2024-06-04 15:35:39,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:39,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:39,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:39,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:39,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:39,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:39,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 174 transitions, 1284 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:39,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:39,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:39,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:40,068 INFO L124 PetriNetUnfolderBase]: 458/982 cut-off events. [2024-06-04 15:35:40,068 INFO L125 PetriNetUnfolderBase]: For 258548/258551 co-relation queries the response was YES. [2024-06-04 15:35:40,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7846 conditions, 982 events. 458/982 cut-off events. For 258548/258551 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5728 event pairs, 120 based on Foata normal form. 8/985 useless extension candidates. Maximal degree in co-relation 7717. Up to 780 conditions per place. [2024-06-04 15:35:40,078 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 37 changer transitions 7/189 dead transitions. [2024-06-04 15:35:40,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 189 transitions, 1742 flow [2024-06-04 15:35:40,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:35:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:35:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 15:35:40,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-04 15:35:40,079 INFO L175 Difference]: Start difference. First operand has 276 places, 174 transitions, 1284 flow. Second operand 11 states and 139 transitions. [2024-06-04 15:35:40,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 189 transitions, 1742 flow [2024-06-04 15:35:40,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 189 transitions, 1620 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:40,877 INFO L231 Difference]: Finished difference. Result has 272 places, 170 transitions, 1215 flow [2024-06-04 15:35:40,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1215, PETRI_PLACES=272, PETRI_TRANSITIONS=170} [2024-06-04 15:35:40,878 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-04 15:35:40,878 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 170 transitions, 1215 flow [2024-06-04 15:35:40,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:40,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:40,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:40,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-04 15:35:40,878 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:40,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:40,879 INFO L85 PathProgramCache]: Analyzing trace with hash 319403795, now seen corresponding path program 31 times [2024-06-04 15:35:40,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:40,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943070634] [2024-06-04 15:35:40,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:40,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:42,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:42,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943070634] [2024-06-04 15:35:42,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943070634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:42,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:42,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:42,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820885724] [2024-06-04 15:35:42,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:42,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:42,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:42,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:42,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:42,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 170 transitions, 1215 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:42,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:42,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:42,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:43,137 INFO L124 PetriNetUnfolderBase]: 448/960 cut-off events. [2024-06-04 15:35:43,137 INFO L125 PetriNetUnfolderBase]: For 243693/243696 co-relation queries the response was YES. [2024-06-04 15:35:43,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7619 conditions, 960 events. 448/960 cut-off events. For 243693/243696 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5574 event pairs, 116 based on Foata normal form. 6/960 useless extension candidates. Maximal degree in co-relation 7491. Up to 658 conditions per place. [2024-06-04 15:35:43,145 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 117 selfloop transitions, 51 changer transitions 13/184 dead transitions. [2024-06-04 15:35:43,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 184 transitions, 1637 flow [2024-06-04 15:35:43,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:43,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 15:35:43,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-04 15:35:43,146 INFO L175 Difference]: Start difference. First operand has 272 places, 170 transitions, 1215 flow. Second operand 12 states and 145 transitions. [2024-06-04 15:35:43,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 184 transitions, 1637 flow [2024-06-04 15:35:43,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 184 transitions, 1547 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-04 15:35:43,917 INFO L231 Difference]: Finished difference. Result has 267 places, 166 transitions, 1209 flow [2024-06-04 15:35:43,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1209, PETRI_PLACES=267, PETRI_TRANSITIONS=166} [2024-06-04 15:35:43,917 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-04 15:35:43,917 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 166 transitions, 1209 flow [2024-06-04 15:35:43,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:43,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:43,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:43,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-04 15:35:43,917 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:43,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:43,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1125079195, now seen corresponding path program 32 times [2024-06-04 15:35:43,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:43,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810284220] [2024-06-04 15:35:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:43,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:45,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:45,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810284220] [2024-06-04 15:35:45,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810284220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:45,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:45,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:45,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32788487] [2024-06-04 15:35:45,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:45,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:45,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:45,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:45,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:45,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:45,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 166 transitions, 1209 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:45,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:45,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:45,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:46,349 INFO L124 PetriNetUnfolderBase]: 441/948 cut-off events. [2024-06-04 15:35:46,350 INFO L125 PetriNetUnfolderBase]: For 255179/255179 co-relation queries the response was YES. [2024-06-04 15:35:46,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7611 conditions, 948 events. 441/948 cut-off events. For 255179/255179 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5473 event pairs, 113 based on Foata normal form. 8/954 useless extension candidates. Maximal degree in co-relation 7483. Up to 843 conditions per place. [2024-06-04 15:35:46,359 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 15 changer transitions 9/182 dead transitions. [2024-06-04 15:35:46,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 182 transitions, 1651 flow [2024-06-04 15:35:46,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:46,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-04 15:35:46,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-04 15:35:46,360 INFO L175 Difference]: Start difference. First operand has 267 places, 166 transitions, 1209 flow. Second operand 12 states and 137 transitions. [2024-06-04 15:35:46,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 182 transitions, 1651 flow [2024-06-04 15:35:46,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 182 transitions, 1537 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:46,955 INFO L231 Difference]: Finished difference. Result has 261 places, 163 transitions, 1113 flow [2024-06-04 15:35:46,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1113, PETRI_PLACES=261, PETRI_TRANSITIONS=163} [2024-06-04 15:35:46,955 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-04 15:35:46,955 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 163 transitions, 1113 flow [2024-06-04 15:35:46,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:46,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:46,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:46,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-04 15:35:46,955 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:46,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:46,956 INFO L85 PathProgramCache]: Analyzing trace with hash -577528079, now seen corresponding path program 33 times [2024-06-04 15:35:46,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:46,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363315797] [2024-06-04 15:35:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:46,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:48,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:48,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363315797] [2024-06-04 15:35:48,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363315797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:48,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:48,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:48,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660902975] [2024-06-04 15:35:48,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:48,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:48,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:48,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:48,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:48,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 163 transitions, 1113 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:48,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:48,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:48,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:49,363 INFO L124 PetriNetUnfolderBase]: 447/974 cut-off events. [2024-06-04 15:35:49,363 INFO L125 PetriNetUnfolderBase]: For 257706/257706 co-relation queries the response was YES. [2024-06-04 15:35:49,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8083 conditions, 974 events. 447/974 cut-off events. For 257706/257706 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5707 event pairs, 120 based on Foata normal form. 6/978 useless extension candidates. Maximal degree in co-relation 7958. Up to 796 conditions per place. [2024-06-04 15:35:49,372 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 156 selfloop transitions, 15 changer transitions 9/183 dead transitions. [2024-06-04 15:35:49,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 183 transitions, 1783 flow [2024-06-04 15:35:49,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:49,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:49,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 15:35:49,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 15:35:49,373 INFO L175 Difference]: Start difference. First operand has 261 places, 163 transitions, 1113 flow. Second operand 12 states and 142 transitions. [2024-06-04 15:35:49,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 183 transitions, 1783 flow [2024-06-04 15:35:50,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 183 transitions, 1745 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:50,102 INFO L231 Difference]: Finished difference. Result has 259 places, 160 transitions, 1092 flow [2024-06-04 15:35:50,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1092, PETRI_PLACES=259, PETRI_TRANSITIONS=160} [2024-06-04 15:35:50,102 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-04 15:35:50,102 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 160 transitions, 1092 flow [2024-06-04 15:35:50,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:50,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:50,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:50,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-04 15:35:50,103 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:50,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:50,103 INFO L85 PathProgramCache]: Analyzing trace with hash 557213459, now seen corresponding path program 34 times [2024-06-04 15:35:50,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:50,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678647877] [2024-06-04 15:35:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:50,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:51,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:51,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678647877] [2024-06-04 15:35:51,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678647877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:51,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:51,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:51,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669232075] [2024-06-04 15:35:51,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:51,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:51,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:51,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:51,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:51,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:51,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 160 transitions, 1092 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:51,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:51,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:51,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:52,130 INFO L124 PetriNetUnfolderBase]: 452/993 cut-off events. [2024-06-04 15:35:52,130 INFO L125 PetriNetUnfolderBase]: For 280804/280804 co-relation queries the response was YES. [2024-06-04 15:35:52,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8742 conditions, 993 events. 452/993 cut-off events. For 280804/280804 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5883 event pairs, 131 based on Foata normal form. 6/997 useless extension candidates. Maximal degree in co-relation 8618. Up to 812 conditions per place. [2024-06-04 15:35:52,140 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 151 selfloop transitions, 18 changer transitions 9/181 dead transitions. [2024-06-04 15:35:52,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 181 transitions, 1758 flow [2024-06-04 15:35:52,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:35:52,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:35:52,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-04 15:35:52,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36778846153846156 [2024-06-04 15:35:52,141 INFO L175 Difference]: Start difference. First operand has 259 places, 160 transitions, 1092 flow. Second operand 13 states and 153 transitions. [2024-06-04 15:35:52,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 181 transitions, 1758 flow [2024-06-04 15:35:52,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 181 transitions, 1712 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:52,945 INFO L231 Difference]: Finished difference. Result has 257 places, 157 transitions, 1073 flow [2024-06-04 15:35:52,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1073, PETRI_PLACES=257, PETRI_TRANSITIONS=157} [2024-06-04 15:35:52,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-04 15:35:52,946 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 157 transitions, 1073 flow [2024-06-04 15:35:52,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:52,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:52,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:52,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-04 15:35:52,947 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:52,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:52,947 INFO L85 PathProgramCache]: Analyzing trace with hash -577816379, now seen corresponding path program 35 times [2024-06-04 15:35:52,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:52,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409386361] [2024-06-04 15:35:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:52,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:54,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:54,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409386361] [2024-06-04 15:35:54,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409386361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:54,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:54,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:54,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804053314] [2024-06-04 15:35:54,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:54,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:54,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:54,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:54,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 157 transitions, 1073 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:54,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:54,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:54,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:55,016 INFO L124 PetriNetUnfolderBase]: 442/975 cut-off events. [2024-06-04 15:35:55,016 INFO L125 PetriNetUnfolderBase]: For 275168/275168 co-relation queries the response was YES. [2024-06-04 15:35:55,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8621 conditions, 975 events. 442/975 cut-off events. For 275168/275168 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5758 event pairs, 131 based on Foata normal form. 6/979 useless extension candidates. Maximal degree in co-relation 8499. Up to 854 conditions per place. [2024-06-04 15:35:55,026 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 13 changer transitions 11/173 dead transitions. [2024-06-04 15:35:55,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 173 transitions, 1481 flow [2024-06-04 15:35:55,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-04 15:35:55,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-04 15:35:55,027 INFO L175 Difference]: Start difference. First operand has 257 places, 157 transitions, 1073 flow. Second operand 12 states and 137 transitions. [2024-06-04 15:35:55,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 173 transitions, 1481 flow [2024-06-04 15:35:55,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 173 transitions, 1440 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 15:35:55,844 INFO L231 Difference]: Finished difference. Result has 253 places, 153 transitions, 1036 flow [2024-06-04 15:35:55,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1036, PETRI_PLACES=253, PETRI_TRANSITIONS=153} [2024-06-04 15:35:55,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-04 15:35:55,845 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 153 transitions, 1036 flow [2024-06-04 15:35:55,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:55,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:55,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:55,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-04 15:35:55,846 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:55,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:55,846 INFO L85 PathProgramCache]: Analyzing trace with hash -585859949, now seen corresponding path program 36 times [2024-06-04 15:35:55,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:55,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217041681] [2024-06-04 15:35:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:55,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:57,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:57,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217041681] [2024-06-04 15:35:57,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217041681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:57,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:57,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:57,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687906301] [2024-06-04 15:35:57,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:57,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:57,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:57,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:57,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:57,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:35:57,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 153 transitions, 1036 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:57,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:57,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:35:57,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:58,126 INFO L124 PetriNetUnfolderBase]: 419/922 cut-off events. [2024-06-04 15:35:58,126 INFO L125 PetriNetUnfolderBase]: For 237546/237546 co-relation queries the response was YES. [2024-06-04 15:35:58,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 922 events. 419/922 cut-off events. For 237546/237546 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5349 event pairs, 118 based on Foata normal form. 6/926 useless extension candidates. Maximal degree in co-relation 7583. Up to 811 conditions per place. [2024-06-04 15:35:58,134 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 144 selfloop transitions, 12 changer transitions 10/169 dead transitions. [2024-06-04 15:35:58,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 169 transitions, 1436 flow [2024-06-04 15:35:58,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:58,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 15:35:58,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 15:35:58,135 INFO L175 Difference]: Start difference. First operand has 253 places, 153 transitions, 1036 flow. Second operand 12 states and 135 transitions. [2024-06-04 15:35:58,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 169 transitions, 1436 flow [2024-06-04 15:35:58,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 169 transitions, 1400 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 15:35:58,798 INFO L231 Difference]: Finished difference. Result has 247 places, 150 transitions, 1010 flow [2024-06-04 15:35:58,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1010, PETRI_PLACES=247, PETRI_TRANSITIONS=150} [2024-06-04 15:35:58,798 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-04 15:35:58,799 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 150 transitions, 1010 flow [2024-06-04 15:35:58,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:35:58,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:58,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:58,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-04 15:35:58,799 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:35:58,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:58,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2007126931, now seen corresponding path program 37 times [2024-06-04 15:35:58,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:58,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000709498] [2024-06-04 15:35:58,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:58,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:00,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:00,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000709498] [2024-06-04 15:36:00,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000709498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:00,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:00,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:00,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927961550] [2024-06-04 15:36:00,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:00,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:00,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:00,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:00,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:00,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:00,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 150 transitions, 1010 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:00,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:00,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:00,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:01,247 INFO L124 PetriNetUnfolderBase]: 416/914 cut-off events. [2024-06-04 15:36:01,247 INFO L125 PetriNetUnfolderBase]: For 238134/238137 co-relation queries the response was YES. [2024-06-04 15:36:01,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7602 conditions, 914 events. 416/914 cut-off events. For 238134/238137 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5292 event pairs, 127 based on Foata normal form. 8/917 useless extension candidates. Maximal degree in co-relation 7484. Up to 752 conditions per place. [2024-06-04 15:36:01,254 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 28 changer transitions 9/166 dead transitions. [2024-06-04 15:36:01,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 166 transitions, 1418 flow [2024-06-04 15:36:01,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:01,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-04 15:36:01,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-04 15:36:01,255 INFO L175 Difference]: Start difference. First operand has 247 places, 150 transitions, 1010 flow. Second operand 12 states and 143 transitions. [2024-06-04 15:36:01,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 166 transitions, 1418 flow [2024-06-04 15:36:01,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 166 transitions, 1390 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:36:01,865 INFO L231 Difference]: Finished difference. Result has 243 places, 147 transitions, 1020 flow [2024-06-04 15:36:01,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1020, PETRI_PLACES=243, PETRI_TRANSITIONS=147} [2024-06-04 15:36:01,866 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-04 15:36:01,866 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 147 transitions, 1020 flow [2024-06-04 15:36:01,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:01,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:01,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:01,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-04 15:36:01,866 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:01,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:01,867 INFO L85 PathProgramCache]: Analyzing trace with hash 899512049, now seen corresponding path program 38 times [2024-06-04 15:36:01,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:01,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002932811] [2024-06-04 15:36:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:01,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:03,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:03,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002932811] [2024-06-04 15:36:03,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002932811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:03,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:03,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:03,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274925036] [2024-06-04 15:36:03,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:03,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:03,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:03,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:03,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:03,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:03,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 147 transitions, 1020 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:03,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:03,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:03,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:03,842 INFO L124 PetriNetUnfolderBase]: 400/885 cut-off events. [2024-06-04 15:36:03,842 INFO L125 PetriNetUnfolderBase]: For 214859/214859 co-relation queries the response was YES. [2024-06-04 15:36:03,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7198 conditions, 885 events. 400/885 cut-off events. For 214859/214859 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5045 event pairs, 111 based on Foata normal form. 6/889 useless extension candidates. Maximal degree in co-relation 7081. Up to 713 conditions per place. [2024-06-04 15:36:03,849 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 12 changer transitions 12/169 dead transitions. [2024-06-04 15:36:03,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 169 transitions, 1652 flow [2024-06-04 15:36:03,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:36:03,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:36:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-04 15:36:03,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629807692307692 [2024-06-04 15:36:03,850 INFO L175 Difference]: Start difference. First operand has 243 places, 147 transitions, 1020 flow. Second operand 13 states and 151 transitions. [2024-06-04 15:36:03,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 169 transitions, 1652 flow [2024-06-04 15:36:04,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 169 transitions, 1588 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:36:04,390 INFO L231 Difference]: Finished difference. Result has 242 places, 143 transitions, 966 flow [2024-06-04 15:36:04,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=966, PETRI_PLACES=242, PETRI_TRANSITIONS=143} [2024-06-04 15:36:04,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-04 15:36:04,390 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 143 transitions, 966 flow [2024-06-04 15:36:04,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:04,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:04,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:04,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-04 15:36:04,390 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:04,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:04,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2000870821, now seen corresponding path program 39 times [2024-06-04 15:36:04,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:04,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484730576] [2024-06-04 15:36:04,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:04,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:06,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:06,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484730576] [2024-06-04 15:36:06,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484730576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:06,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:06,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:06,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044407539] [2024-06-04 15:36:06,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:06,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:06,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:06,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:06,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:06,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:06,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 143 transitions, 966 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:06,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:06,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:06,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:07,240 INFO L124 PetriNetUnfolderBase]: 376/834 cut-off events. [2024-06-04 15:36:07,241 INFO L125 PetriNetUnfolderBase]: For 212522/212525 co-relation queries the response was YES. [2024-06-04 15:36:07,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6178 conditions, 834 events. 376/834 cut-off events. For 212522/212525 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4695 event pairs, 118 based on Foata normal form. 14/842 useless extension candidates. Maximal degree in co-relation 6062. Up to 632 conditions per place. [2024-06-04 15:36:07,249 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 116 selfloop transitions, 24 changer transitions 13/156 dead transitions. [2024-06-04 15:36:07,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 156 transitions, 1344 flow [2024-06-04 15:36:07,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:07,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 15:36:07,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:36:07,250 INFO L175 Difference]: Start difference. First operand has 242 places, 143 transitions, 966 flow. Second operand 12 states and 138 transitions. [2024-06-04 15:36:07,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 156 transitions, 1344 flow [2024-06-04 15:36:07,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 156 transitions, 1313 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:36:07,797 INFO L231 Difference]: Finished difference. Result has 236 places, 137 transitions, 949 flow [2024-06-04 15:36:07,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=949, PETRI_PLACES=236, PETRI_TRANSITIONS=137} [2024-06-04 15:36:07,798 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-04 15:36:07,798 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 137 transitions, 949 flow [2024-06-04 15:36:07,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:07,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:07,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:07,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-04 15:36:07,798 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:07,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:07,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2100469681, now seen corresponding path program 40 times [2024-06-04 15:36:07,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:07,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301080896] [2024-06-04 15:36:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:07,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:09,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:09,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301080896] [2024-06-04 15:36:09,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301080896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:09,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:09,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:09,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085830034] [2024-06-04 15:36:09,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:09,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:09,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:09,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:09,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:10,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:10,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 137 transitions, 949 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:10,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:10,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:10,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:10,772 INFO L124 PetriNetUnfolderBase]: 337/756 cut-off events. [2024-06-04 15:36:10,772 INFO L125 PetriNetUnfolderBase]: For 141941/141941 co-relation queries the response was YES. [2024-06-04 15:36:10,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5201 conditions, 756 events. 337/756 cut-off events. For 141941/141941 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4131 event pairs, 86 based on Foata normal form. 6/760 useless extension candidates. Maximal degree in co-relation 5088. Up to 647 conditions per place. [2024-06-04 15:36:10,776 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 10 changer transitions 14/153 dead transitions. [2024-06-04 15:36:10,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 153 transitions, 1285 flow [2024-06-04 15:36:10,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:36:10,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:36:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-04 15:36:10,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:36:10,777 INFO L175 Difference]: Start difference. First operand has 236 places, 137 transitions, 949 flow. Second operand 13 states and 143 transitions. [2024-06-04 15:36:10,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 153 transitions, 1285 flow [2024-06-04 15:36:11,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 153 transitions, 1215 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-04 15:36:11,075 INFO L231 Difference]: Finished difference. Result has 230 places, 131 transitions, 853 flow [2024-06-04 15:36:11,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=853, PETRI_PLACES=230, PETRI_TRANSITIONS=131} [2024-06-04 15:36:11,075 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-04 15:36:11,075 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 131 transitions, 853 flow [2024-06-04 15:36:11,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:11,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:11,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:11,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-04 15:36:11,075 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:11,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:11,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1261327872, now seen corresponding path program 1 times [2024-06-04 15:36:11,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:11,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702184116] [2024-06-04 15:36:11,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:11,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:12,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:12,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702184116] [2024-06-04 15:36:12,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702184116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:12,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:12,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:36:12,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7688220] [2024-06-04 15:36:12,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:12,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:36:12,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:12,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:36:12,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:36:12,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:12,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 131 transitions, 853 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:12,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:12,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:12,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:13,203 INFO L124 PetriNetUnfolderBase]: 328/733 cut-off events. [2024-06-04 15:36:13,203 INFO L125 PetriNetUnfolderBase]: For 133304/133304 co-relation queries the response was YES. [2024-06-04 15:36:13,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4947 conditions, 733 events. 328/733 cut-off events. For 133304/133304 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3964 event pairs, 81 based on Foata normal form. 6/737 useless extension candidates. Maximal degree in co-relation 4837. Up to 599 conditions per place. [2024-06-04 15:36:13,209 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 11 changer transitions 20/151 dead transitions. [2024-06-04 15:36:13,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 151 transitions, 1213 flow [2024-06-04 15:36:13,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:36:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:36:13,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:36:13,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:36:13,210 INFO L175 Difference]: Start difference. First operand has 230 places, 131 transitions, 853 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:36:13,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 151 transitions, 1213 flow [2024-06-04 15:36:13,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 151 transitions, 1115 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-04 15:36:13,417 INFO L231 Difference]: Finished difference. Result has 216 places, 123 transitions, 747 flow [2024-06-04 15:36:13,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=747, PETRI_PLACES=216, PETRI_TRANSITIONS=123} [2024-06-04 15:36:13,418 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-04 15:36:13,418 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 123 transitions, 747 flow [2024-06-04 15:36:13,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:13,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:13,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:13,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-04 15:36:13,418 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:13,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:13,418 INFO L85 PathProgramCache]: Analyzing trace with hash -778684844, now seen corresponding path program 2 times [2024-06-04 15:36:13,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:13,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062244173] [2024-06-04 15:36:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:13,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:15,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:15,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062244173] [2024-06-04 15:36:15,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062244173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:15,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:15,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:15,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524790221] [2024-06-04 15:36:15,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:15,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:15,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:15,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:15,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:15,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:15,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 123 transitions, 747 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:15,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:15,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:15,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:15,579 INFO L124 PetriNetUnfolderBase]: 306/689 cut-off events. [2024-06-04 15:36:15,579 INFO L125 PetriNetUnfolderBase]: For 126960/126960 co-relation queries the response was YES. [2024-06-04 15:36:15,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4565 conditions, 689 events. 306/689 cut-off events. For 126960/126960 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3694 event pairs, 81 based on Foata normal form. 6/693 useless extension candidates. Maximal degree in co-relation 4461. Up to 564 conditions per place. [2024-06-04 15:36:15,584 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 17 changer transitions 10/141 dead transitions. [2024-06-04 15:36:15,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 141 transitions, 1075 flow [2024-06-04 15:36:15,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:15,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 15:36:15,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 15:36:15,585 INFO L175 Difference]: Start difference. First operand has 216 places, 123 transitions, 747 flow. Second operand 12 states and 135 transitions. [2024-06-04 15:36:15,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 141 transitions, 1075 flow [2024-06-04 15:36:15,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 141 transitions, 1043 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 15:36:15,794 INFO L231 Difference]: Finished difference. Result has 208 places, 120 transitions, 737 flow [2024-06-04 15:36:15,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=737, PETRI_PLACES=208, PETRI_TRANSITIONS=120} [2024-06-04 15:36:15,794 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-04 15:36:15,794 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 120 transitions, 737 flow [2024-06-04 15:36:15,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:15,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:15,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:15,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-04 15:36:15,795 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:15,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:15,795 INFO L85 PathProgramCache]: Analyzing trace with hash -98980080, now seen corresponding path program 3 times [2024-06-04 15:36:15,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:15,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480256118] [2024-06-04 15:36:15,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:15,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:19,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:19,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480256118] [2024-06-04 15:36:19,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480256118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:19,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:19,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:19,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126059633] [2024-06-04 15:36:19,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:19,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:19,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:19,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:19,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:19,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:19,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 120 transitions, 737 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:19,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:19,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:19,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:19,757 INFO L124 PetriNetUnfolderBase]: 299/676 cut-off events. [2024-06-04 15:36:19,757 INFO L125 PetriNetUnfolderBase]: For 115277/115277 co-relation queries the response was YES. [2024-06-04 15:36:19,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4415 conditions, 676 events. 299/676 cut-off events. For 115277/115277 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3606 event pairs, 77 based on Foata normal form. 6/680 useless extension candidates. Maximal degree in co-relation 4315. Up to 540 conditions per place. [2024-06-04 15:36:19,761 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 16 changer transitions 10/139 dead transitions. [2024-06-04 15:36:19,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 139 transitions, 1063 flow [2024-06-04 15:36:19,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:19,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:19,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 15:36:19,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:36:19,762 INFO L175 Difference]: Start difference. First operand has 208 places, 120 transitions, 737 flow. Second operand 12 states and 136 transitions. [2024-06-04 15:36:19,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 139 transitions, 1063 flow [2024-06-04 15:36:19,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 139 transitions, 1023 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:36:19,953 INFO L231 Difference]: Finished difference. Result has 204 places, 116 transitions, 713 flow [2024-06-04 15:36:19,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=713, PETRI_PLACES=204, PETRI_TRANSITIONS=116} [2024-06-04 15:36:19,953 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-04 15:36:19,953 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 116 transitions, 713 flow [2024-06-04 15:36:19,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:19,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:19,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:19,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-04 15:36:19,953 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:19,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:19,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1538193378, now seen corresponding path program 4 times [2024-06-04 15:36:19,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:19,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054501600] [2024-06-04 15:36:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:19,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:22,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:22,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054501600] [2024-06-04 15:36:22,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054501600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:22,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:22,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:22,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68829099] [2024-06-04 15:36:22,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:22,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:22,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:22,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:22,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:22,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:22,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 116 transitions, 713 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:22,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:22,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:22,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:22,975 INFO L124 PetriNetUnfolderBase]: 288/653 cut-off events. [2024-06-04 15:36:22,975 INFO L125 PetriNetUnfolderBase]: For 109500/109500 co-relation queries the response was YES. [2024-06-04 15:36:22,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4293 conditions, 653 events. 288/653 cut-off events. For 109500/109500 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3435 event pairs, 79 based on Foata normal form. 6/657 useless extension candidates. Maximal degree in co-relation 4195. Up to 536 conditions per place. [2024-06-04 15:36:22,979 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 6 changer transitions 25/134 dead transitions. [2024-06-04 15:36:22,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 134 transitions, 1027 flow [2024-06-04 15:36:22,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:22,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 15:36:22,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-04 15:36:22,980 INFO L175 Difference]: Start difference. First operand has 204 places, 116 transitions, 713 flow. Second operand 12 states and 133 transitions. [2024-06-04 15:36:22,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 134 transitions, 1027 flow [2024-06-04 15:36:23,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 134 transitions, 987 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 15:36:23,143 INFO L231 Difference]: Finished difference. Result has 198 places, 105 transitions, 621 flow [2024-06-04 15:36:23,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=621, PETRI_PLACES=198, PETRI_TRANSITIONS=105} [2024-06-04 15:36:23,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-04 15:36:23,143 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 105 transitions, 621 flow [2024-06-04 15:36:23,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:23,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:23,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:23,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-04 15:36:23,143 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:23,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:23,144 INFO L85 PathProgramCache]: Analyzing trace with hash -261516250, now seen corresponding path program 5 times [2024-06-04 15:36:23,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:23,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418986514] [2024-06-04 15:36:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:23,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:24,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:24,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418986514] [2024-06-04 15:36:24,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418986514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:24,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:24,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:24,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318301664] [2024-06-04 15:36:24,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:24,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:24,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:24,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:24,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:24,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:24,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 105 transitions, 621 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:24,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:24,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:24,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:25,280 INFO L124 PetriNetUnfolderBase]: 268/605 cut-off events. [2024-06-04 15:36:25,281 INFO L125 PetriNetUnfolderBase]: For 101185/101185 co-relation queries the response was YES. [2024-06-04 15:36:25,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4018 conditions, 605 events. 268/605 cut-off events. For 101185/101185 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3122 event pairs, 79 based on Foata normal form. 6/609 useless extension candidates. Maximal degree in co-relation 3936. Up to 503 conditions per place. [2024-06-04 15:36:25,284 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 12 changer transitions 11/120 dead transitions. [2024-06-04 15:36:25,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 120 transitions, 895 flow [2024-06-04 15:36:25,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:25,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:25,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 15:36:25,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-04 15:36:25,285 INFO L175 Difference]: Start difference. First operand has 198 places, 105 transitions, 621 flow. Second operand 12 states and 133 transitions. [2024-06-04 15:36:25,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 120 transitions, 895 flow [2024-06-04 15:36:25,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 120 transitions, 860 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-04 15:36:25,496 INFO L231 Difference]: Finished difference. Result has 182 places, 101 transitions, 595 flow [2024-06-04 15:36:25,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=595, PETRI_PLACES=182, PETRI_TRANSITIONS=101} [2024-06-04 15:36:25,496 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-04 15:36:25,496 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 101 transitions, 595 flow [2024-06-04 15:36:25,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:25,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:25,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:25,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-04 15:36:25,497 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:25,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:25,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2094114898, now seen corresponding path program 6 times [2024-06-04 15:36:25,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:25,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127908568] [2024-06-04 15:36:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:25,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:27,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:27,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127908568] [2024-06-04 15:36:27,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127908568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:27,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:27,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:27,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143271628] [2024-06-04 15:36:27,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:27,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:27,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:27,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:27,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:28,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:28,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 101 transitions, 595 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:28,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:28,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:28,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:28,565 INFO L124 PetriNetUnfolderBase]: 260/587 cut-off events. [2024-06-04 15:36:28,565 INFO L125 PetriNetUnfolderBase]: For 86394/86394 co-relation queries the response was YES. [2024-06-04 15:36:28,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3752 conditions, 587 events. 260/587 cut-off events. For 86394/86394 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2997 event pairs, 79 based on Foata normal form. 6/591 useless extension candidates. Maximal degree in co-relation 3677. Up to 493 conditions per place. [2024-06-04 15:36:28,569 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 11 changer transitions 10/116 dead transitions. [2024-06-04 15:36:28,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 116 transitions, 859 flow [2024-06-04 15:36:28,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-04 15:36:28,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-04 15:36:28,570 INFO L175 Difference]: Start difference. First operand has 182 places, 101 transitions, 595 flow. Second operand 12 states and 131 transitions. [2024-06-04 15:36:28,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 116 transitions, 859 flow [2024-06-04 15:36:28,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 116 transitions, 827 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:36:28,704 INFO L231 Difference]: Finished difference. Result has 176 places, 98 transitions, 573 flow [2024-06-04 15:36:28,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=573, PETRI_PLACES=176, PETRI_TRANSITIONS=98} [2024-06-04 15:36:28,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-04 15:36:28,705 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 98 transitions, 573 flow [2024-06-04 15:36:28,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:28,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:28,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:28,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-04 15:36:28,706 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:28,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:28,706 INFO L85 PathProgramCache]: Analyzing trace with hash -460962190, now seen corresponding path program 7 times [2024-06-04 15:36:28,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:28,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551305354] [2024-06-04 15:36:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:28,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:30,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:30,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551305354] [2024-06-04 15:36:30,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551305354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:30,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:30,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:30,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488000736] [2024-06-04 15:36:30,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:30,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:30,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:30,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:30,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:31,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:31,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 98 transitions, 573 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:31,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:31,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:31,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:31,480 INFO L124 PetriNetUnfolderBase]: 253/574 cut-off events. [2024-06-04 15:36:31,480 INFO L125 PetriNetUnfolderBase]: For 79082/79082 co-relation queries the response was YES. [2024-06-04 15:36:31,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3619 conditions, 574 events. 253/574 cut-off events. For 79082/79082 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2911 event pairs, 77 based on Foata normal form. 6/578 useless extension candidates. Maximal degree in co-relation 3547. Up to 475 conditions per place. [2024-06-04 15:36:31,483 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 7 changer transitions 17/114 dead transitions. [2024-06-04 15:36:31,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 114 transitions, 835 flow [2024-06-04 15:36:31,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:31,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-04 15:36:31,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-04 15:36:31,484 INFO L175 Difference]: Start difference. First operand has 176 places, 98 transitions, 573 flow. Second operand 12 states and 131 transitions. [2024-06-04 15:36:31,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 114 transitions, 835 flow [2024-06-04 15:36:31,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 114 transitions, 807 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:36:31,582 INFO L231 Difference]: Finished difference. Result has 172 places, 92 transitions, 535 flow [2024-06-04 15:36:31,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=535, PETRI_PLACES=172, PETRI_TRANSITIONS=92} [2024-06-04 15:36:31,582 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-04 15:36:31,582 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 92 transitions, 535 flow [2024-06-04 15:36:31,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:31,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:31,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:31,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-04 15:36:31,582 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:31,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:31,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1236723622, now seen corresponding path program 8 times [2024-06-04 15:36:31,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:31,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783206018] [2024-06-04 15:36:31,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:31,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:34,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:34,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783206018] [2024-06-04 15:36:34,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783206018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:34,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:34,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:34,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958570755] [2024-06-04 15:36:34,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:34,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:34,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:34,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 92 transitions, 535 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:34,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:34,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:34,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:34,759 INFO L124 PetriNetUnfolderBase]: 240/545 cut-off events. [2024-06-04 15:36:34,759 INFO L125 PetriNetUnfolderBase]: For 74376/74376 co-relation queries the response was YES. [2024-06-04 15:36:34,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3473 conditions, 545 events. 240/545 cut-off events. For 74376/74376 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2720 event pairs, 77 based on Foata normal form. 6/549 useless extension candidates. Maximal degree in co-relation 3403. Up to 447 conditions per place. [2024-06-04 15:36:34,762 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 12 changer transitions 10/107 dead transitions. [2024-06-04 15:36:34,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 107 transitions, 781 flow [2024-06-04 15:36:34,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:34,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:34,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-04 15:36:34,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-04 15:36:34,763 INFO L175 Difference]: Start difference. First operand has 172 places, 92 transitions, 535 flow. Second operand 12 states and 131 transitions. [2024-06-04 15:36:34,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 107 transitions, 781 flow [2024-06-04 15:36:34,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 107 transitions, 755 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:36:34,854 INFO L231 Difference]: Finished difference. Result has 162 places, 89 transitions, 521 flow [2024-06-04 15:36:34,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=521, PETRI_PLACES=162, PETRI_TRANSITIONS=89} [2024-06-04 15:36:34,854 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-04 15:36:34,854 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 89 transitions, 521 flow [2024-06-04 15:36:34,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:34,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:34,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:34,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-04 15:36:34,854 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:34,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:34,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1231217092, now seen corresponding path program 9 times [2024-06-04 15:36:34,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:34,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391034757] [2024-06-04 15:36:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:34,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:36,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:36,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391034757] [2024-06-04 15:36:36,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391034757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:36,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:36,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:36,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675414583] [2024-06-04 15:36:36,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:36,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:36,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:36,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:36,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:36,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:36,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 89 transitions, 521 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:36,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:36,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:36,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:37,049 INFO L124 PetriNetUnfolderBase]: 233/532 cut-off events. [2024-06-04 15:36:37,049 INFO L125 PetriNetUnfolderBase]: For 63354/63354 co-relation queries the response was YES. [2024-06-04 15:36:37,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3290 conditions, 532 events. 233/532 cut-off events. For 63354/63354 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2635 event pairs, 73 based on Foata normal form. 6/536 useless extension candidates. Maximal degree in co-relation 3225. Up to 423 conditions per place. [2024-06-04 15:36:37,052 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 81 selfloop transitions, 11 changer transitions 10/105 dead transitions. [2024-06-04 15:36:37,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 105 transitions, 765 flow [2024-06-04 15:36:37,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 15:36:37,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:36:37,053 INFO L175 Difference]: Start difference. First operand has 162 places, 89 transitions, 521 flow. Second operand 12 states and 132 transitions. [2024-06-04 15:36:37,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 105 transitions, 765 flow [2024-06-04 15:36:37,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 105 transitions, 735 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:36:37,133 INFO L231 Difference]: Finished difference. Result has 158 places, 85 transitions, 497 flow [2024-06-04 15:36:37,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=497, PETRI_PLACES=158, PETRI_TRANSITIONS=85} [2024-06-04 15:36:37,134 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-04 15:36:37,134 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 85 transitions, 497 flow [2024-06-04 15:36:37,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:37,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:37,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:37,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-04 15:36:37,134 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:37,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:37,134 INFO L85 PathProgramCache]: Analyzing trace with hash -207996206, now seen corresponding path program 10 times [2024-06-04 15:36:37,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:37,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282199060] [2024-06-04 15:36:37,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:37,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:38,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:38,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282199060] [2024-06-04 15:36:38,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282199060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:38,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:38,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:38,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528679292] [2024-06-04 15:36:38,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:38,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:38,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:38,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:38,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:39,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:39,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 85 transitions, 497 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:39,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:39,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:39,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:39,665 INFO L124 PetriNetUnfolderBase]: 207/476 cut-off events. [2024-06-04 15:36:39,665 INFO L125 PetriNetUnfolderBase]: For 49268/49268 co-relation queries the response was YES. [2024-06-04 15:36:39,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2736 conditions, 476 events. 207/476 cut-off events. For 49268/49268 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2274 event pairs, 62 based on Foata normal form. 6/480 useless extension candidates. Maximal degree in co-relation 2673. Up to 386 conditions per place. [2024-06-04 15:36:39,669 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 70 selfloop transitions, 3 changer transitions 24/100 dead transitions. [2024-06-04 15:36:39,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 100 transitions, 729 flow [2024-06-04 15:36:39,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:39,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:39,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-04 15:36:39,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-04 15:36:39,670 INFO L175 Difference]: Start difference. First operand has 158 places, 85 transitions, 497 flow. Second operand 12 states and 129 transitions. [2024-06-04 15:36:39,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 100 transitions, 729 flow [2024-06-04 15:36:39,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 100 transitions, 699 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 15:36:39,762 INFO L231 Difference]: Finished difference. Result has 152 places, 75 transitions, 426 flow [2024-06-04 15:36:39,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=426, PETRI_PLACES=152, PETRI_TRANSITIONS=75} [2024-06-04 15:36:39,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-04 15:36:39,762 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 75 transitions, 426 flow [2024-06-04 15:36:39,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:39,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:39,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:39,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-04 15:36:39,763 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:39,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1729658632, now seen corresponding path program 11 times [2024-06-04 15:36:39,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:39,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148392879] [2024-06-04 15:36:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:39,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:42,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:42,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148392879] [2024-06-04 15:36:42,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148392879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:42,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:42,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:42,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517233786] [2024-06-04 15:36:42,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:42,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:42,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:42,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:42,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:42,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:42,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 75 transitions, 426 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:42,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:42,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:42,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:43,010 INFO L124 PetriNetUnfolderBase]: 191/435 cut-off events. [2024-06-04 15:36:43,011 INFO L125 PetriNetUnfolderBase]: For 44182/44182 co-relation queries the response was YES. [2024-06-04 15:36:43,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2524 conditions, 435 events. 191/435 cut-off events. For 44182/44182 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2054 event pairs, 62 based on Foata normal form. 6/440 useless extension candidates. Maximal degree in co-relation 2464. Up to 283 conditions per place. [2024-06-04 15:36:43,013 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 49 selfloop transitions, 26 changer transitions 10/88 dead transitions. [2024-06-04 15:36:43,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 88 transitions, 628 flow [2024-06-04 15:36:43,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:43,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 15:36:43,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:36:43,013 INFO L175 Difference]: Start difference. First operand has 152 places, 75 transitions, 426 flow. Second operand 12 states and 132 transitions. [2024-06-04 15:36:43,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 88 transitions, 628 flow [2024-06-04 15:36:43,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 88 transitions, 602 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-04 15:36:43,070 INFO L231 Difference]: Finished difference. Result has 134 places, 72 transitions, 440 flow [2024-06-04 15:36:43,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=440, PETRI_PLACES=134, PETRI_TRANSITIONS=72} [2024-06-04 15:36:43,070 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-04 15:36:43,070 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 72 transitions, 440 flow [2024-06-04 15:36:43,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:43,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:43,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:43,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-04 15:36:43,071 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:43,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:43,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1729802782, now seen corresponding path program 12 times [2024-06-04 15:36:43,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:43,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834512181] [2024-06-04 15:36:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:43,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:44,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:44,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834512181] [2024-06-04 15:36:44,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834512181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:44,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:44,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:44,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587598099] [2024-06-04 15:36:44,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:44,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:44,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:44,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:44,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:44,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:44,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 72 transitions, 440 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:44,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:44,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:44,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:45,249 INFO L124 PetriNetUnfolderBase]: 184/422 cut-off events. [2024-06-04 15:36:45,249 INFO L125 PetriNetUnfolderBase]: For 33718/33718 co-relation queries the response was YES. [2024-06-04 15:36:45,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 422 events. 184/422 cut-off events. For 33718/33718 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1972 event pairs, 56 based on Foata normal form. 6/427 useless extension candidates. Maximal degree in co-relation 2302. Up to 247 conditions per place. [2024-06-04 15:36:45,251 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 46 selfloop transitions, 27 changer transitions 10/86 dead transitions. [2024-06-04 15:36:45,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 86 transitions, 640 flow [2024-06-04 15:36:45,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:45,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:45,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 15:36:45,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-04 15:36:45,251 INFO L175 Difference]: Start difference. First operand has 134 places, 72 transitions, 440 flow. Second operand 12 states and 133 transitions. [2024-06-04 15:36:45,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 86 transitions, 640 flow [2024-06-04 15:36:45,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 86 transitions, 582 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:36:45,283 INFO L231 Difference]: Finished difference. Result has 130 places, 68 transitions, 420 flow [2024-06-04 15:36:45,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=420, PETRI_PLACES=130, PETRI_TRANSITIONS=68} [2024-06-04 15:36:45,284 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-04 15:36:45,284 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 68 transitions, 420 flow [2024-06-04 15:36:45,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:45,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:45,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:45,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-04 15:36:45,284 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:45,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:45,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1530356842, now seen corresponding path program 13 times [2024-06-04 15:36:45,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:45,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759363820] [2024-06-04 15:36:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:45,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:47,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:47,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:47,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759363820] [2024-06-04 15:36:47,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759363820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:47,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:47,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:47,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975750717] [2024-06-04 15:36:47,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:47,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:47,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:47,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:47,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:47,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:47,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 68 transitions, 420 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:47,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:47,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:47,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:47,719 INFO L124 PetriNetUnfolderBase]: 158/366 cut-off events. [2024-06-04 15:36:47,719 INFO L125 PetriNetUnfolderBase]: For 24696/24696 co-relation queries the response was YES. [2024-06-04 15:36:47,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 366 events. 158/366 cut-off events. For 24696/24696 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1621 event pairs, 47 based on Foata normal form. 6/371 useless extension candidates. Maximal degree in co-relation 1842. Up to 222 conditions per place. [2024-06-04 15:36:47,721 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 46 selfloop transitions, 19 changer transitions 13/81 dead transitions. [2024-06-04 15:36:47,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 81 transitions, 608 flow [2024-06-04 15:36:47,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:47,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 15:36:47,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:36:47,722 INFO L175 Difference]: Start difference. First operand has 130 places, 68 transitions, 420 flow. Second operand 12 states and 132 transitions. [2024-06-04 15:36:47,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 81 transitions, 608 flow [2024-06-04 15:36:47,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 81 transitions, 546 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 15:36:47,747 INFO L231 Difference]: Finished difference. Result has 124 places, 63 transitions, 375 flow [2024-06-04 15:36:47,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=375, PETRI_PLACES=124, PETRI_TRANSITIONS=63} [2024-06-04 15:36:47,748 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-04 15:36:47,748 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 63 transitions, 375 flow [2024-06-04 15:36:47,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:47,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:47,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:47,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-04 15:36:47,748 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:47,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:47,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1409677712, now seen corresponding path program 14 times [2024-06-04 15:36:47,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:47,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459703754] [2024-06-04 15:36:47,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:47,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:50,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:50,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459703754] [2024-06-04 15:36:50,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459703754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:50,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:50,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:50,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655536141] [2024-06-04 15:36:50,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:50,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:50,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:50,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:50,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:50,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:50,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 63 transitions, 375 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:50,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:50,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:50,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:50,647 INFO L124 PetriNetUnfolderBase]: 149/345 cut-off events. [2024-06-04 15:36:50,647 INFO L125 PetriNetUnfolderBase]: For 21532/21532 co-relation queries the response was YES. [2024-06-04 15:36:50,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1755 conditions, 345 events. 149/345 cut-off events. For 21532/21532 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1505 event pairs, 47 based on Foata normal form. 6/350 useless extension candidates. Maximal degree in co-relation 1708. Up to 212 conditions per place. [2024-06-04 15:36:50,648 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 43 selfloop transitions, 15 changer transitions 15/76 dead transitions. [2024-06-04 15:36:50,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 76 transitions, 553 flow [2024-06-04 15:36:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:50,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 15:36:50,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:36:50,650 INFO L175 Difference]: Start difference. First operand has 124 places, 63 transitions, 375 flow. Second operand 12 states and 132 transitions. [2024-06-04 15:36:50,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 76 transitions, 553 flow [2024-06-04 15:36:50,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 76 transitions, 505 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 15:36:50,675 INFO L231 Difference]: Finished difference. Result has 115 places, 57 transitions, 332 flow [2024-06-04 15:36:50,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=332, PETRI_PLACES=115, PETRI_TRANSITIONS=57} [2024-06-04 15:36:50,675 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-04 15:36:50,676 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 57 transitions, 332 flow [2024-06-04 15:36:50,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:50,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:50,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:50,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-04 15:36:50,676 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:50,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:50,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2064419976, now seen corresponding path program 15 times [2024-06-04 15:36:50,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:50,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411029834] [2024-06-04 15:36:50,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:50,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:52,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:52,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:52,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411029834] [2024-06-04 15:36:52,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411029834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:52,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:52,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:52,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335827687] [2024-06-04 15:36:52,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:52,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:52,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:52,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:52,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:52,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:52,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 57 transitions, 332 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:52,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:52,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:52,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:53,208 INFO L124 PetriNetUnfolderBase]: 124/288 cut-off events. [2024-06-04 15:36:53,208 INFO L125 PetriNetUnfolderBase]: For 13274/13274 co-relation queries the response was YES. [2024-06-04 15:36:53,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 288 events. 124/288 cut-off events. For 13274/13274 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1157 event pairs, 34 based on Foata normal form. 6/293 useless extension candidates. Maximal degree in co-relation 1246. Up to 184 conditions per place. [2024-06-04 15:36:53,210 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 38 selfloop transitions, 16 changer transitions 13/70 dead transitions. [2024-06-04 15:36:53,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 70 transitions, 498 flow [2024-06-04 15:36:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 15:36:53,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-04 15:36:53,210 INFO L175 Difference]: Start difference. First operand has 115 places, 57 transitions, 332 flow. Second operand 12 states and 134 transitions. [2024-06-04 15:36:53,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 70 transitions, 498 flow [2024-06-04 15:36:53,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 70 transitions, 452 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-04 15:36:53,220 INFO L231 Difference]: Finished difference. Result has 105 places, 52 transitions, 299 flow [2024-06-04 15:36:53,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=299, PETRI_PLACES=105, PETRI_TRANSITIONS=52} [2024-06-04 15:36:53,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-04 15:36:53,220 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 52 transitions, 299 flow [2024-06-04 15:36:53,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:53,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:53,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:53,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-04 15:36:53,221 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:53,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:53,221 INFO L85 PathProgramCache]: Analyzing trace with hash -989412216, now seen corresponding path program 16 times [2024-06-04 15:36:53,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:53,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622659593] [2024-06-04 15:36:53,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:53,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:55,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:55,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622659593] [2024-06-04 15:36:55,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622659593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:55,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:55,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:55,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532146546] [2024-06-04 15:36:55,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:55,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:55,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:55,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:55,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:56,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:56,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 52 transitions, 299 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:56,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:56,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:56,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:56,453 INFO L124 PetriNetUnfolderBase]: 115/267 cut-off events. [2024-06-04 15:36:56,453 INFO L125 PetriNetUnfolderBase]: For 10208/10208 co-relation queries the response was YES. [2024-06-04 15:36:56,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 267 events. 115/267 cut-off events. For 10208/10208 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1027 event pairs, 34 based on Foata normal form. 6/272 useless extension candidates. Maximal degree in co-relation 1114. Up to 198 conditions per place. [2024-06-04 15:36:56,460 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 40 selfloop transitions, 4 changer transitions 18/65 dead transitions. [2024-06-04 15:36:56,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 65 transitions, 453 flow [2024-06-04 15:36:56,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:56,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 15:36:56,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-04 15:36:56,461 INFO L175 Difference]: Start difference. First operand has 105 places, 52 transitions, 299 flow. Second operand 12 states and 125 transitions. [2024-06-04 15:36:56,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 65 transitions, 453 flow [2024-06-04 15:36:56,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 65 transitions, 407 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-04 15:36:56,472 INFO L231 Difference]: Finished difference. Result has 96 places, 45 transitions, 236 flow [2024-06-04 15:36:56,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=236, PETRI_PLACES=96, PETRI_TRANSITIONS=45} [2024-06-04 15:36:56,472 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-04 15:36:56,472 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 45 transitions, 236 flow [2024-06-04 15:36:56,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:56,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:56,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:56,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-04 15:36:56,473 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:56,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:56,473 INFO L85 PathProgramCache]: Analyzing trace with hash -705548378, now seen corresponding path program 17 times [2024-06-04 15:36:56,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:56,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072712597] [2024-06-04 15:36:56,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:56,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:58,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:58,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072712597] [2024-06-04 15:36:58,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072712597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:58,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:58,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:58,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031559576] [2024-06-04 15:36:58,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:58,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:58,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:58,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:58,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:59,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:36:59,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 45 transitions, 236 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:59,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:59,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:36:59,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:59,374 INFO L124 PetriNetUnfolderBase]: 104/240 cut-off events. [2024-06-04 15:36:59,375 INFO L125 PetriNetUnfolderBase]: For 8058/8058 co-relation queries the response was YES. [2024-06-04 15:36:59,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 240 events. 104/240 cut-off events. For 8058/8058 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 879 event pairs, 34 based on Foata normal form. 6/245 useless extension candidates. Maximal degree in co-relation 956. Up to 149 conditions per place. [2024-06-04 15:36:59,376 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 31 selfloop transitions, 14 changer transitions 10/58 dead transitions. [2024-06-04 15:36:59,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 58 transitions, 374 flow [2024-06-04 15:36:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:59,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:59,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-04 15:36:59,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-04 15:36:59,376 INFO L175 Difference]: Start difference. First operand has 96 places, 45 transitions, 236 flow. Second operand 12 states and 129 transitions. [2024-06-04 15:36:59,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 58 transitions, 374 flow [2024-06-04 15:36:59,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 58 transitions, 356 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 15:36:59,382 INFO L231 Difference]: Finished difference. Result has 86 places, 42 transitions, 235 flow [2024-06-04 15:36:59,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=235, PETRI_PLACES=86, PETRI_TRANSITIONS=42} [2024-06-04 15:36:59,383 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-04 15:36:59,383 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 42 transitions, 235 flow [2024-06-04 15:36:59,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:36:59,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:59,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:59,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-04 15:36:59,383 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:36:59,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:59,383 INFO L85 PathProgramCache]: Analyzing trace with hash -711054908, now seen corresponding path program 18 times [2024-06-04 15:36:59,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:59,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782791752] [2024-06-04 15:36:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:59,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:37:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:37:01,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:37:01,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782791752] [2024-06-04 15:37:01,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782791752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:37:01,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:37:01,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:37:01,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285719364] [2024-06-04 15:37:01,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:37:01,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:37:01,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:37:01,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:37:01,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:37:01,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:37:01,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 42 transitions, 235 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:37:01,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:37:01,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:37:01,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:37:02,265 INFO L124 PetriNetUnfolderBase]: 97/227 cut-off events. [2024-06-04 15:37:02,265 INFO L125 PetriNetUnfolderBase]: For 6114/6114 co-relation queries the response was YES. [2024-06-04 15:37:02,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 227 events. 97/227 cut-off events. For 6114/6114 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 823 event pairs, 30 based on Foata normal form. 6/232 useless extension candidates. Maximal degree in co-relation 892. Up to 125 conditions per place. [2024-06-04 15:37:02,266 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 30 selfloop transitions, 13 changer transitions 10/56 dead transitions. [2024-06-04 15:37:02,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 56 transitions, 371 flow [2024-06-04 15:37:02,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:37:02,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:37:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 15:37:02,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-04 15:37:02,267 INFO L175 Difference]: Start difference. First operand has 86 places, 42 transitions, 235 flow. Second operand 12 states and 130 transitions. [2024-06-04 15:37:02,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 56 transitions, 371 flow [2024-06-04 15:37:02,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 56 transitions, 337 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:37:02,272 INFO L231 Difference]: Finished difference. Result has 82 places, 38 transitions, 211 flow [2024-06-04 15:37:02,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=211, PETRI_PLACES=82, PETRI_TRANSITIONS=38} [2024-06-04 15:37:02,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-04 15:37:02,272 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 38 transitions, 211 flow [2024-06-04 15:37:02,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:37:02,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:37:02,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:37:02,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-04 15:37:02,272 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:37:02,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:37:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash -511608968, now seen corresponding path program 19 times [2024-06-04 15:37:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:37:02,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141290827] [2024-06-04 15:37:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:37:02,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:37:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:37:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:37:04,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:37:04,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141290827] [2024-06-04 15:37:04,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141290827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:37:04,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:37:04,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:37:04,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077057115] [2024-06-04 15:37:04,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:37:04,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:37:04,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:37:04,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:37:04,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:37:04,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:37:04,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 38 transitions, 211 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:37:04,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:37:04,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:37:04,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:37:04,589 INFO L124 PetriNetUnfolderBase]: 86/204 cut-off events. [2024-06-04 15:37:04,589 INFO L125 PetriNetUnfolderBase]: For 5180/5180 co-relation queries the response was YES. [2024-06-04 15:37:04,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 204 events. 86/204 cut-off events. For 5180/5180 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 697 event pairs, 32 based on Foata normal form. 6/209 useless extension candidates. Maximal degree in co-relation 808. Up to 121 conditions per place. [2024-06-04 15:37:04,590 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 25 selfloop transitions, 8 changer transitions 15/51 dead transitions. [2024-06-04 15:37:04,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 51 transitions, 335 flow [2024-06-04 15:37:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:37:04,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:37:04,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 15:37:04,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-04 15:37:04,591 INFO L175 Difference]: Start difference. First operand has 82 places, 38 transitions, 211 flow. Second operand 12 states and 127 transitions. [2024-06-04 15:37:04,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 51 transitions, 335 flow [2024-06-04 15:37:04,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 51 transitions, 301 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 15:37:04,593 INFO L231 Difference]: Finished difference. Result has 76 places, 32 transitions, 169 flow [2024-06-04 15:37:04,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=169, PETRI_PLACES=76, PETRI_TRANSITIONS=32} [2024-06-04 15:37:04,594 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-04 15:37:04,594 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 32 transitions, 169 flow [2024-06-04 15:37:04,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:37:04,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:37:04,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:37:04,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-04 15:37:04,594 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:37:04,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:37:04,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2091179046, now seen corresponding path program 20 times [2024-06-04 15:37:04,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:37:04,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674640143] [2024-06-04 15:37:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:37:04,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:37:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:37:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:37:06,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:37:06,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674640143] [2024-06-04 15:37:06,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674640143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:37:06,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:37:06,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:37:06,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181444168] [2024-06-04 15:37:06,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:37:06,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:37:06,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:37:06,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:37:06,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:37:06,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:37:06,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 32 transitions, 169 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:37:06,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:37:06,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:37:06,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:37:07,041 INFO L124 PetriNetUnfolderBase]: 61/147 cut-off events. [2024-06-04 15:37:07,041 INFO L125 PetriNetUnfolderBase]: For 2656/2656 co-relation queries the response was YES. [2024-06-04 15:37:07,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 147 events. 61/147 cut-off events. For 2656/2656 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 423 event pairs, 19 based on Foata normal form. 6/152 useless extension candidates. Maximal degree in co-relation 498. Up to 78 conditions per place. [2024-06-04 15:37:07,042 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 22 selfloop transitions, 8 changer transitions 12/45 dead transitions. [2024-06-04 15:37:07,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 45 transitions, 281 flow [2024-06-04 15:37:07,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:37:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:37:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 15:37:07,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-04 15:37:07,043 INFO L175 Difference]: Start difference. First operand has 76 places, 32 transitions, 169 flow. Second operand 12 states and 125 transitions. [2024-06-04 15:37:07,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 45 transitions, 281 flow [2024-06-04 15:37:07,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 45 transitions, 253 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:37:07,045 INFO L231 Difference]: Finished difference. Result has 66 places, 28 transitions, 140 flow [2024-06-04 15:37:07,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=140, PETRI_PLACES=66, PETRI_TRANSITIONS=28} [2024-06-04 15:37:07,045 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-04 15:37:07,045 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 28 transitions, 140 flow [2024-06-04 15:37:07,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:37:07,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:37:07,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:37:07,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-04 15:37:07,045 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:37:07,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:37:07,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1116871690, now seen corresponding path program 21 times [2024-06-04 15:37:07,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:37:07,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881394371] [2024-06-04 15:37:07,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:37:07,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:37:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:37:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:37:10,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:37:10,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881394371] [2024-06-04 15:37:10,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881394371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:37:10,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:37:10,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:37:10,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383664838] [2024-06-04 15:37:10,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:37:10,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:37:10,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:37:10,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:37:10,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:37:10,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:37:10,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 28 transitions, 140 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:37:10,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:37:10,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:37:10,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:37:10,712 INFO L124 PetriNetUnfolderBase]: 53/129 cut-off events. [2024-06-04 15:37:10,713 INFO L125 PetriNetUnfolderBase]: For 1542/1542 co-relation queries the response was YES. [2024-06-04 15:37:10,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 129 events. 53/129 cut-off events. For 1542/1542 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 326 event pairs, 17 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 418. Up to 60 conditions per place. [2024-06-04 15:37:10,713 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 18 selfloop transitions, 6 changer transitions 15/42 dead transitions. [2024-06-04 15:37:10,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 42 transitions, 248 flow [2024-06-04 15:37:10,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:37:10,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:37:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-04 15:37:10,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-04 15:37:10,714 INFO L175 Difference]: Start difference. First operand has 66 places, 28 transitions, 140 flow. Second operand 12 states and 124 transitions. [2024-06-04 15:37:10,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 42 transitions, 248 flow [2024-06-04 15:37:10,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 42 transitions, 224 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:37:10,715 INFO L231 Difference]: Finished difference. Result has 59 places, 23 transitions, 108 flow [2024-06-04 15:37:10,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=108, PETRI_PLACES=59, PETRI_TRANSITIONS=23} [2024-06-04 15:37:10,715 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-04 15:37:10,715 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 23 transitions, 108 flow [2024-06-04 15:37:10,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:37:10,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:37:10,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:37:10,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-04 15:37:10,716 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:37:10,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:37:10,716 INFO L85 PathProgramCache]: Analyzing trace with hash 891350152, now seen corresponding path program 22 times [2024-06-04 15:37:10,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:37:10,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040041145] [2024-06-04 15:37:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:37:10,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:37:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:37:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:37:12,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:37:12,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040041145] [2024-06-04 15:37:12,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040041145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:37:12,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:37:12,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:37:12,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370374189] [2024-06-04 15:37:12,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:37:12,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:37:12,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:37:12,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:37:12,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:37:12,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:37:12,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 23 transitions, 108 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:37:12,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:37:12,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:37:12,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:37:12,846 INFO L124 PetriNetUnfolderBase]: 26/70 cut-off events. [2024-06-04 15:37:12,846 INFO L125 PetriNetUnfolderBase]: For 516/516 co-relation queries the response was YES. [2024-06-04 15:37:12,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 70 events. 26/70 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 178. Up to 32 conditions per place. [2024-06-04 15:37:12,846 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-04 15:37:12,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 31 transitions, 154 flow [2024-06-04 15:37:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:37:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:37:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-04 15:37:12,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-04 15:37:12,847 INFO L175 Difference]: Start difference. First operand has 59 places, 23 transitions, 108 flow. Second operand 11 states and 106 transitions. [2024-06-04 15:37:12,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 31 transitions, 154 flow [2024-06-04 15:37:12,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 124 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-04 15:37:12,847 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-04 15:37:12,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-04 15:37:12,847 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-04 15:37:12,847 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-04 15:37:12,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:37:12,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 15:37:12,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 15:37:12,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 15:37:12,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 15:37:12,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-04 15:37:12,851 INFO L445 BasicCegarLoop]: Path program histogram: [40, 34, 22, 21, 20, 17, 15, 10, 7, 6, 6, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:37:12,854 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 15:37:12,854 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 15:37:12,858 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 15:37:12,858 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 15:37:12,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 03:37:12 BasicIcfg [2024-06-04 15:37:12,859 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 15:37:12,859 INFO L158 Benchmark]: Toolchain (without parser) took 533721.31ms. Allocated memory was 130.0MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 52.6MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 226.1MB. Max. memory is 16.1GB. [2024-06-04 15:37:12,859 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 130.0MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:37:12,860 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 99.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:37:12,860 INFO L158 Benchmark]: CACSL2BoogieTranslator took 711.67ms. Allocated memory was 130.0MB in the beginning and 195.0MB in the end (delta: 65.0MB). Free memory was 52.4MB in the beginning and 133.4MB in the end (delta: -81.0MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2024-06-04 15:37:12,860 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.97ms. Allocated memory is still 195.0MB. Free memory was 133.4MB in the beginning and 130.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 15:37:12,861 INFO L158 Benchmark]: Boogie Preprocessor took 52.49ms. Allocated memory is still 195.0MB. Free memory was 130.2MB in the beginning and 126.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 15:37:12,861 INFO L158 Benchmark]: RCFGBuilder took 766.59ms. Allocated memory is still 195.0MB. Free memory was 126.0MB in the beginning and 69.4MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-06-04 15:37:12,861 INFO L158 Benchmark]: TraceAbstraction took 532107.88ms. Allocated memory was 195.0MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 68.4MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 174.5MB. Max. memory is 16.1GB. [2024-06-04 15:37:12,862 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.19ms. Allocated memory is still 130.0MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 99.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 711.67ms. Allocated memory was 130.0MB in the beginning and 195.0MB in the end (delta: 65.0MB). Free memory was 52.4MB in the beginning and 133.4MB in the end (delta: -81.0MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.97ms. Allocated memory is still 195.0MB. Free memory was 133.4MB in the beginning and 130.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.49ms. Allocated memory is still 195.0MB. Free memory was 130.2MB in the beginning and 126.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 766.59ms. Allocated memory is still 195.0MB. Free memory was 126.0MB in the beginning and 69.4MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 532107.88ms. Allocated memory was 195.0MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 68.4MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 174.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 830]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 532.0s, OverallIterations: 227, TraceHistogramMax: 1, PathProgramHistogramMax: 40, EmptinessCheckTime: 0.0s, AutomataDifference: 196.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15153 SdHoareTripleChecker+Valid, 71.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13018 mSDsluCounter, 5582 SdHoareTripleChecker+Invalid, 61.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4943 mSDsCounter, 2754 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 110315 IncrementalHoareTripleChecker+Invalid, 113069 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2754 mSolverCounterUnsat, 639 mSDtfsCounter, 110315 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2723 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2716 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6077 ImplicationChecksByTransitivity, 94.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3187occurred in iteration=116, InterpolantAutomatonStates: 2357, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 331.8s InterpolantComputationTime, 4012 NumberOfCodeBlocks, 4012 NumberOfCodeBlocksAsserted, 227 NumberOfCheckSat, 3785 ConstructedInterpolants, 0 QuantifiedInterpolants, 186340 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 227 InterpolantComputations, 227 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 15:37:12,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE