./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.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/mix000.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/mix000.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix000.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 [2024-06-03 19:03:15,638 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:03:15,681 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:03:15,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:03:15,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:03:15,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:03:15,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:03:15,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:03:15,699 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:03:15,699 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:03:15,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:03:15,700 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:03:15,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:03:15,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:03:15,701 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:03:15,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:03:15,701 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:03:15,701 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:03:15,702 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:03:15,702 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:03:15,702 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:03:15,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:03:15,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:03:15,703 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:03:15,704 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:03:15,704 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:03:15,704 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:03:15,704 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:03:15,705 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:03:15,705 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:03:15,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:03:15,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:03:15,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:03:15,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:03:15,707 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:03:15,707 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:03:15,707 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:03:15,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:03:15,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:03:15,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:03:15,708 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:03:15,709 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:03:15,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:03:15,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:03:15,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:03:15,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:03:15,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:03:15,929 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:03:15,931 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:03:15,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix000.opt.yml/witness.yml [2024-06-03 19:03:16,077 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:03:16,078 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:03:16,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-03 19:03:17,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:03:17,268 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:03:17,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-03 19:03:17,289 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0ab0bd30/4269740b1c94492eb76060b90d94aa62/FLAG7241cde6f [2024-06-03 19:03:17,299 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0ab0bd30/4269740b1c94492eb76060b90d94aa62 [2024-06-03 19:03:17,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:03:17,304 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:03:17,306 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:03:17,306 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:03:17,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:03:17,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:03:16" (1/2) ... [2024-06-03 19:03:17,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5994dd62 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:03:17, skipping insertion in model container [2024-06-03 19:03:17,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:03:16" (1/2) ... [2024-06-03 19:03:17,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d7935fe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:03:17, skipping insertion in model container [2024-06-03 19:03:17,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:03:17" (2/2) ... [2024-06-03 19:03:17,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5994dd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17, skipping insertion in model container [2024-06-03 19:03:17,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:03:17" (2/2) ... [2024-06-03 19:03:17,312 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:03:17,362 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:03:17,363 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-03 19:03:17,363 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-03 19:03:17,363 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:03:17,363 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-03 19:03:17,398 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:03:17,755 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:03:17,762 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:03:17,830 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:03:17,856 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:03:17,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17 WrapperNode [2024-06-03 19:03:17,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:03:17,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:03:17,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:03:17,858 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:03:17,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17" (1/1) ... [2024-06-03 19:03:17,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17" (1/1) ... [2024-06-03 19:03:17,923 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-03 19:03:17,923 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:03:17,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:03:17,924 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:03:17,924 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:03:17,932 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17" (1/1) ... [2024-06-03 19:03:17,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17" (1/1) ... [2024-06-03 19:03:17,945 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17" (1/1) ... [2024-06-03 19:03:17,963 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]. [2024-06-03 19:03:17,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17" (1/1) ... [2024-06-03 19:03:17,968 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17" (1/1) ... [2024-06-03 19:03:17,976 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17" (1/1) ... [2024-06-03 19:03:17,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17" (1/1) ... [2024-06-03 19:03:17,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17" (1/1) ... [2024-06-03 19:03:17,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17" (1/1) ... [2024-06-03 19:03:18,001 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:03:18,002 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:03:18,002 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:03:18,002 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:03:18,003 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17" (1/1) ... [2024-06-03 19:03:18,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:03:18,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:03:18,029 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) [2024-06-03 19:03:18,036 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 [2024-06-03 19:03:18,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:03:18,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:03:18,058 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 19:03:18,058 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 19:03:18,059 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 19:03:18,059 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 19:03:18,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:03:18,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:03:18,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:03:18,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:03:18,060 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 19:03:18,158 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:03:18,160 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:03:18,434 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:03:18,438 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:03:18,601 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:03:18,601 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 19:03:18,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:03:18 BoogieIcfgContainer [2024-06-03 19:03:18,603 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:03:18,605 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:03:18,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:03:18,608 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:03:18,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:03:16" (1/4) ... [2024-06-03 19:03:18,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b550c5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:03:18, skipping insertion in model container [2024-06-03 19:03:18,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:03:17" (2/4) ... [2024-06-03 19:03:18,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b550c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:03:18, skipping insertion in model container [2024-06-03 19:03:18,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:03:17" (3/4) ... [2024-06-03 19:03:18,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b550c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:03:18, skipping insertion in model container [2024-06-03 19:03:18,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:03:18" (4/4) ... [2024-06-03 19:03:18,614 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.opt.i [2024-06-03 19:03:18,627 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:03:18,627 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 19:03:18,628 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:03:18,662 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 19:03:18,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-03 19:03:18,716 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-03 19:03:18,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:03:18,718 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. [2024-06-03 19:03:18,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-03 19:03:18,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-03 19:03:18,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:03:18,739 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;@5915e539, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:03:18,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 19:03:18,744 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:03:18,744 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-03 19:03:18,744 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:03:18,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:18,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 19:03:18,746 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)] === [2024-06-03 19:03:18,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:18,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1642904383, now seen corresponding path program 1 times [2024-06-03 19:03:18,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:18,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549222619] [2024-06-03 19:03:18,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:18,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:19,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:19,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549222619] [2024-06-03 19:03:19,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549222619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:19,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:19,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:03:19,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961733521] [2024-06-03 19:03:19,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:19,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:03:19,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:19,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:03:19,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:03:19,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-03 19:03:19,809 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) [2024-06-03 19:03:19,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:19,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-03 19:03:19,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:19,933 INFO L124 PetriNetUnfolderBase]: 131/262 cut-off events. [2024-06-03 19:03:19,933 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-03 19:03:19,935 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. [2024-06-03 19:03:19,937 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 22 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-03 19:03:19,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 119 flow [2024-06-03 19:03:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:03:19,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:03:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-06-03 19:03:19,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-03 19:03:19,948 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 57 transitions. [2024-06-03 19:03:19,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 119 flow [2024-06-03 19:03:19,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 19:03:19,951 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-03 19:03:19,952 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} [2024-06-03 19:03:19,955 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-03 19:03:19,955 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-03 19:03:19,955 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) [2024-06-03 19:03:19,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:19,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:19,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:03:19,956 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)] === [2024-06-03 19:03:19,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:19,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1717139950, now seen corresponding path program 1 times [2024-06-03 19:03:19,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:19,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082793940] [2024-06-03 19:03:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:19,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:20,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:20,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082793940] [2024-06-03 19:03:20,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082793940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:20,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:20,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:03:20,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299686611] [2024-06-03 19:03:20,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:20,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:03:20,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:03:20,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:03:20,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-03 19:03:20,612 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) [2024-06-03 19:03:20,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:20,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-03 19:03:20,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:20,756 INFO L124 PetriNetUnfolderBase]: 186/342 cut-off events. [2024-06-03 19:03:20,756 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-03 19:03:20,757 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. [2024-06-03 19:03:20,758 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 28 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-03 19:03:20,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 165 flow [2024-06-03 19:03:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:03:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:03:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-03 19:03:20,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-03 19:03:20,760 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 67 transitions. [2024-06-03 19:03:20,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 165 flow [2024-06-03 19:03:20,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:03:20,763 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-03 19:03:20,763 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} [2024-06-03 19:03:20,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-03 19:03:20,765 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-03 19:03:20,765 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) [2024-06-03 19:03:20,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:20,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:20,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:03:20,766 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)] === [2024-06-03 19:03:20,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:20,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1683688252, now seen corresponding path program 1 times [2024-06-03 19:03:20,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:20,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951675671] [2024-06-03 19:03:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:20,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:21,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:21,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951675671] [2024-06-03 19:03:21,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951675671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:21,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:21,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:03:21,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30830819] [2024-06-03 19:03:21,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:21,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:03:21,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:21,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:03:21,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:03:21,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-03 19:03:21,490 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) [2024-06-03 19:03:21,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:21,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-03 19:03:21,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:21,601 INFO L124 PetriNetUnfolderBase]: 180/332 cut-off events. [2024-06-03 19:03:21,602 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-06-03 19:03:21,602 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. [2024-06-03 19:03:21,604 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-03 19:03:21,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 217 flow [2024-06-03 19:03:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:03:21,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:03:21,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-03 19:03:21,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-03 19:03:21,606 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 82 transitions. [2024-06-03 19:03:21,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 217 flow [2024-06-03 19:03:21,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 19:03:21,607 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-03 19:03:21,608 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} [2024-06-03 19:03:21,608 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-03 19:03:21,608 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-03 19:03:21,609 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) [2024-06-03 19:03:21,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:21,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:21,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:03:21,609 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)] === [2024-06-03 19:03:21,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:21,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1621724491, now seen corresponding path program 1 times [2024-06-03 19:03:21,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:21,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553265877] [2024-06-03 19:03:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:21,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:22,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:22,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553265877] [2024-06-03 19:03:22,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553265877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:22,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:22,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:03:22,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020590995] [2024-06-03 19:03:22,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:22,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:03:22,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:22,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:03:22,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:03:22,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-03 19:03:22,316 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) [2024-06-03 19:03:22,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:22,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-03 19:03:22,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:22,450 INFO L124 PetriNetUnfolderBase]: 137/284 cut-off events. [2024-06-03 19:03:22,451 INFO L125 PetriNetUnfolderBase]: For 265/265 co-relation queries the response was YES. [2024-06-03 19:03:22,452 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. [2024-06-03 19:03:22,454 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 25 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2024-06-03 19:03:22,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 201 flow [2024-06-03 19:03:22,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:03:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:03:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-03 19:03:22,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-03 19:03:22,456 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 5 states and 74 transitions. [2024-06-03 19:03:22,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 201 flow [2024-06-03 19:03:22,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 186 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-03 19:03:22,458 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 133 flow [2024-06-03 19:03:22,458 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} [2024-06-03 19:03:22,459 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-03 19:03:22,459 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 133 flow [2024-06-03 19:03:22,459 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) [2024-06-03 19:03:22,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:22,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:22,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:03:22,460 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)] === [2024-06-03 19:03:22,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:22,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2129581982, now seen corresponding path program 1 times [2024-06-03 19:03:22,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:22,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036238701] [2024-06-03 19:03:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:22,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:23,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:23,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036238701] [2024-06-03 19:03:23,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036238701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:23,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:23,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:03:23,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770707227] [2024-06-03 19:03:23,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:23,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:03:23,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:03:23,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:03:23,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-03 19:03:23,527 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) [2024-06-03 19:03:23,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:23,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-03 19:03:23,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:23,741 INFO L124 PetriNetUnfolderBase]: 174/321 cut-off events. [2024-06-03 19:03:23,742 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-06-03 19:03:23,742 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. [2024-06-03 19:03:23,744 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-06-03 19:03:23,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 271 flow [2024-06-03 19:03:23,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:03:23,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:03:23,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-03 19:03:23,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-03 19:03:23,747 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 133 flow. Second operand 7 states and 104 transitions. [2024-06-03 19:03:23,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 271 flow [2024-06-03 19:03:23,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 260 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-03 19:03:23,752 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 149 flow [2024-06-03 19:03:23,752 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} [2024-06-03 19:03:23,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-03 19:03:23,757 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 149 flow [2024-06-03 19:03:23,757 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) [2024-06-03 19:03:23,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:23,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:23,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 19:03:23,762 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)] === [2024-06-03 19:03:23,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:23,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1266149862, now seen corresponding path program 1 times [2024-06-03 19:03:23,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:23,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62149276] [2024-06-03 19:03:23,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:23,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:24,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:24,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62149276] [2024-06-03 19:03:24,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62149276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:24,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:24,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:03:24,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023022416] [2024-06-03 19:03:24,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:24,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:03:24,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:24,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:03:24,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:03:24,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-03 19:03:24,710 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) [2024-06-03 19:03:24,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:24,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-03 19:03:24,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:24,830 INFO L124 PetriNetUnfolderBase]: 129/268 cut-off events. [2024-06-03 19:03:24,831 INFO L125 PetriNetUnfolderBase]: For 515/515 co-relation queries the response was YES. [2024-06-03 19:03:24,832 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. [2024-06-03 19:03:24,833 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 28 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-03 19:03:24,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 245 flow [2024-06-03 19:03:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:03:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:03:24,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-03 19:03:24,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-03 19:03:24,835 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 149 flow. Second operand 6 states and 86 transitions. [2024-06-03 19:03:24,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 245 flow [2024-06-03 19:03:24,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 223 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-03 19:03:24,837 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 160 flow [2024-06-03 19:03:24,838 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} [2024-06-03 19:03:24,840 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-03 19:03:24,840 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 160 flow [2024-06-03 19:03:24,840 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) [2024-06-03 19:03:24,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:24,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:24,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 19:03:24,842 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)] === [2024-06-03 19:03:24,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:24,842 INFO L85 PathProgramCache]: Analyzing trace with hash -2075778054, now seen corresponding path program 1 times [2024-06-03 19:03:24,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:24,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34304622] [2024-06-03 19:03:24,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:24,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:25,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:25,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34304622] [2024-06-03 19:03:25,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34304622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:25,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:25,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:03:25,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250814770] [2024-06-03 19:03:25,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:25,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:03:25,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:25,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:03:25,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:03:25,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:25,419 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) [2024-06-03 19:03:25,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:25,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:25,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:25,618 INFO L124 PetriNetUnfolderBase]: 171/317 cut-off events. [2024-06-03 19:03:25,618 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-06-03 19:03:25,619 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. [2024-06-03 19:03:25,620 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-03 19:03:25,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 276 flow [2024-06-03 19:03:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:03:25,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:03:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-03 19:03:25,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 19:03:25,622 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 160 flow. Second operand 6 states and 78 transitions. [2024-06-03 19:03:25,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 276 flow [2024-06-03 19:03:25,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 259 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 19:03:25,624 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 176 flow [2024-06-03 19:03:25,624 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} [2024-06-03 19:03:25,625 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-03 19:03:25,625 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 176 flow [2024-06-03 19:03:25,625 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) [2024-06-03 19:03:25,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:25,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:25,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 19:03:25,626 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)] === [2024-06-03 19:03:25,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:25,626 INFO L85 PathProgramCache]: Analyzing trace with hash 595932692, now seen corresponding path program 2 times [2024-06-03 19:03:25,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:25,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448562182] [2024-06-03 19:03:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:25,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:26,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:26,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448562182] [2024-06-03 19:03:26,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448562182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:26,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:26,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:03:26,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085863446] [2024-06-03 19:03:26,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:26,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:03:26,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:03:26,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:03:26,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:26,278 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) [2024-06-03 19:03:26,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:26,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:26,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:26,397 INFO L124 PetriNetUnfolderBase]: 169/315 cut-off events. [2024-06-03 19:03:26,397 INFO L125 PetriNetUnfolderBase]: For 967/970 co-relation queries the response was YES. [2024-06-03 19:03:26,398 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. [2024-06-03 19:03:26,399 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-03 19:03:26,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 286 flow [2024-06-03 19:03:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:03:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:03:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-03 19:03:26,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-03 19:03:26,400 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 176 flow. Second operand 6 states and 77 transitions. [2024-06-03 19:03:26,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 286 flow [2024-06-03 19:03:26,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 269 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 19:03:26,402 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 202 flow [2024-06-03 19:03:26,402 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} [2024-06-03 19:03:26,403 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-03 19:03:26,403 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 202 flow [2024-06-03 19:03:26,403 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) [2024-06-03 19:03:26,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:26,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:26,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 19:03:26,404 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)] === [2024-06-03 19:03:26,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:26,404 INFO L85 PathProgramCache]: Analyzing trace with hash -103213844, now seen corresponding path program 1 times [2024-06-03 19:03:26,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:26,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72511174] [2024-06-03 19:03:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:26,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:26,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:26,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72511174] [2024-06-03 19:03:26,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72511174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:26,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:26,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:03:26,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489889042] [2024-06-03 19:03:26,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:26,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:03:26,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:26,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:03:26,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:03:27,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:27,038 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) [2024-06-03 19:03:27,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:27,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:27,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:27,245 INFO L124 PetriNetUnfolderBase]: 187/349 cut-off events. [2024-06-03 19:03:27,245 INFO L125 PetriNetUnfolderBase]: For 1292/1292 co-relation queries the response was YES. [2024-06-03 19:03:27,246 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. [2024-06-03 19:03:27,247 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 42 selfloop transitions, 16 changer transitions 0/61 dead transitions. [2024-06-03 19:03:27,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 405 flow [2024-06-03 19:03:27,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:03:27,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:03:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-03 19:03:27,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-03 19:03:27,248 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 202 flow. Second operand 8 states and 103 transitions. [2024-06-03 19:03:27,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 405 flow [2024-06-03 19:03:27,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 374 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 19:03:27,253 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 277 flow [2024-06-03 19:03:27,253 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} [2024-06-03 19:03:27,254 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-03 19:03:27,254 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 277 flow [2024-06-03 19:03:27,254 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) [2024-06-03 19:03:27,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:27,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:27,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 19:03:27,254 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)] === [2024-06-03 19:03:27,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:27,255 INFO L85 PathProgramCache]: Analyzing trace with hash 75241350, now seen corresponding path program 2 times [2024-06-03 19:03:27,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:27,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953558154] [2024-06-03 19:03:27,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:27,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:27,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:27,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953558154] [2024-06-03 19:03:27,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953558154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:27,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:27,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:03:27,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024628921] [2024-06-03 19:03:27,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:27,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:03:27,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:27,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:03:27,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:03:27,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:27,923 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) [2024-06-03 19:03:27,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:27,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:27,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:28,175 INFO L124 PetriNetUnfolderBase]: 193/361 cut-off events. [2024-06-03 19:03:28,175 INFO L125 PetriNetUnfolderBase]: For 1672/1672 co-relation queries the response was YES. [2024-06-03 19:03:28,176 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. [2024-06-03 19:03:28,178 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 42 selfloop transitions, 18 changer transitions 0/63 dead transitions. [2024-06-03 19:03:28,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 453 flow [2024-06-03 19:03:28,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:03:28,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:03:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-03 19:03:28,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-03 19:03:28,179 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 277 flow. Second operand 7 states and 92 transitions. [2024-06-03 19:03:28,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 453 flow [2024-06-03 19:03:28,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 63 transitions, 429 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-03 19:03:28,182 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 318 flow [2024-06-03 19:03:28,183 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} [2024-06-03 19:03:28,184 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-03 19:03:28,184 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 318 flow [2024-06-03 19:03:28,184 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) [2024-06-03 19:03:28,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:28,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:28,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 19:03:28,185 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)] === [2024-06-03 19:03:28,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:28,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1087392142, now seen corresponding path program 3 times [2024-06-03 19:03:28,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:28,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595911014] [2024-06-03 19:03:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:28,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:28,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:28,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595911014] [2024-06-03 19:03:28,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595911014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:28,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:28,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:03:28,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502027354] [2024-06-03 19:03:28,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:28,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:03:28,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:28,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:03:28,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:03:28,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:28,875 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) [2024-06-03 19:03:28,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:28,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:28,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:29,097 INFO L124 PetriNetUnfolderBase]: 199/373 cut-off events. [2024-06-03 19:03:29,098 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2024-06-03 19:03:29,099 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. [2024-06-03 19:03:29,100 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 40 selfloop transitions, 20 changer transitions 0/63 dead transitions. [2024-06-03 19:03:29,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 490 flow [2024-06-03 19:03:29,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:03:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:03:29,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-03 19:03:29,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-03 19:03:29,102 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 318 flow. Second operand 7 states and 92 transitions. [2024-06-03 19:03:29,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 490 flow [2024-06-03 19:03:29,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 443 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-03 19:03:29,105 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 340 flow [2024-06-03 19:03:29,105 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} [2024-06-03 19:03:29,105 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-03 19:03:29,106 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 340 flow [2024-06-03 19:03:29,106 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) [2024-06-03 19:03:29,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:29,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:29,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 19:03:29,106 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)] === [2024-06-03 19:03:29,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:29,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1087392359, now seen corresponding path program 1 times [2024-06-03 19:03:29,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:29,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717377555] [2024-06-03 19:03:29,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:29,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:29,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:29,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717377555] [2024-06-03 19:03:29,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717377555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:29,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:29,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:03:29,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089601409] [2024-06-03 19:03:29,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:29,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:03:29,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:29,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:03:29,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:03:30,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:30,006 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) [2024-06-03 19:03:30,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:30,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:30,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:30,185 INFO L124 PetriNetUnfolderBase]: 202/378 cut-off events. [2024-06-03 19:03:30,185 INFO L125 PetriNetUnfolderBase]: For 2086/2086 co-relation queries the response was YES. [2024-06-03 19:03:30,186 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. [2024-06-03 19:03:30,188 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 49 selfloop transitions, 12 changer transitions 0/64 dead transitions. [2024-06-03 19:03:30,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 502 flow [2024-06-03 19:03:30,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:03:30,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:03:30,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-03 19:03:30,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-03 19:03:30,189 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 340 flow. Second operand 7 states and 88 transitions. [2024-06-03 19:03:30,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 502 flow [2024-06-03 19:03:30,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 453 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-03 19:03:30,192 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 334 flow [2024-06-03 19:03:30,192 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} [2024-06-03 19:03:30,193 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-03 19:03:30,193 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 334 flow [2024-06-03 19:03:30,193 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) [2024-06-03 19:03:30,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:30,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:30,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 19:03:30,193 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)] === [2024-06-03 19:03:30,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:30,194 INFO L85 PathProgramCache]: Analyzing trace with hash 80955270, now seen corresponding path program 4 times [2024-06-03 19:03:30,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:30,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615691400] [2024-06-03 19:03:30,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:30,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:30,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:30,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615691400] [2024-06-03 19:03:30,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615691400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:30,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:30,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:03:30,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739271816] [2024-06-03 19:03:30,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:30,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:03:30,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:30,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:03:30,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:03:30,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:30,915 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) [2024-06-03 19:03:30,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:30,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:30,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:31,102 INFO L124 PetriNetUnfolderBase]: 203/383 cut-off events. [2024-06-03 19:03:31,103 INFO L125 PetriNetUnfolderBase]: For 2417/2420 co-relation queries the response was YES. [2024-06-03 19:03:31,104 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. [2024-06-03 19:03:31,105 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 24 changer transitions 0/65 dead transitions. [2024-06-03 19:03:31,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 504 flow [2024-06-03 19:03:31,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:03:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:03:31,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-03 19:03:31,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 19:03:31,107 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 334 flow. Second operand 7 states and 91 transitions. [2024-06-03 19:03:31,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 504 flow [2024-06-03 19:03:31,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 477 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 19:03:31,110 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 384 flow [2024-06-03 19:03:31,111 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} [2024-06-03 19:03:31,111 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-03 19:03:31,112 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 384 flow [2024-06-03 19:03:31,112 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) [2024-06-03 19:03:31,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:31,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:31,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 19:03:31,112 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)] === [2024-06-03 19:03:31,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1284361729, now seen corresponding path program 2 times [2024-06-03 19:03:31,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:31,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467067264] [2024-06-03 19:03:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:31,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:31,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:31,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467067264] [2024-06-03 19:03:31,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467067264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:31,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:31,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:03:31,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841549003] [2024-06-03 19:03:31,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:31,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:03:31,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:31,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:03:31,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:03:32,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:32,004 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) [2024-06-03 19:03:32,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:32,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:32,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:32,198 INFO L124 PetriNetUnfolderBase]: 206/388 cut-off events. [2024-06-03 19:03:32,198 INFO L125 PetriNetUnfolderBase]: For 2792/2795 co-relation queries the response was YES. [2024-06-03 19:03:32,199 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. [2024-06-03 19:03:32,201 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 48 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-03 19:03:32,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 548 flow [2024-06-03 19:03:32,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:03:32,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:03:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-03 19:03:32,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-03 19:03:32,202 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 384 flow. Second operand 7 states and 87 transitions. [2024-06-03 19:03:32,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 548 flow [2024-06-03 19:03:32,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 487 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-03 19:03:32,206 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 376 flow [2024-06-03 19:03:32,206 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} [2024-06-03 19:03:32,207 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-03 19:03:32,207 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 376 flow [2024-06-03 19:03:32,207 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) [2024-06-03 19:03:32,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:32,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:32,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 19:03:32,208 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)] === [2024-06-03 19:03:32,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:32,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1294312709, now seen corresponding path program 3 times [2024-06-03 19:03:32,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:32,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281080619] [2024-06-03 19:03:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:32,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:32,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:32,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281080619] [2024-06-03 19:03:32,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281080619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:32,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:33,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:03:33,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439609554] [2024-06-03 19:03:33,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:33,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:03:33,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:33,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:03:33,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:03:33,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:33,050 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) [2024-06-03 19:03:33,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:33,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:33,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:33,204 INFO L124 PetriNetUnfolderBase]: 204/385 cut-off events. [2024-06-03 19:03:33,205 INFO L125 PetriNetUnfolderBase]: For 2985/2988 co-relation queries the response was YES. [2024-06-03 19:03:33,205 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. [2024-06-03 19:03:33,207 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 47 selfloop transitions, 20 changer transitions 0/70 dead transitions. [2024-06-03 19:03:33,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 562 flow [2024-06-03 19:03:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:03:33,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:03:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-03 19:03:33,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-03 19:03:33,209 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 376 flow. Second operand 7 states and 88 transitions. [2024-06-03 19:03:33,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 562 flow [2024-06-03 19:03:33,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 525 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-03 19:03:33,212 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 427 flow [2024-06-03 19:03:33,212 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} [2024-06-03 19:03:33,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-03 19:03:33,213 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 427 flow [2024-06-03 19:03:33,214 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) [2024-06-03 19:03:33,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:33,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:33,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 19:03:33,214 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)] === [2024-06-03 19:03:33,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:33,214 INFO L85 PathProgramCache]: Analyzing trace with hash -390541517, now seen corresponding path program 1 times [2024-06-03 19:03:33,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:33,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569536549] [2024-06-03 19:03:33,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:33,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:33,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:33,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569536549] [2024-06-03 19:03:33,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569536549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:33,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:33,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:03:33,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13851936] [2024-06-03 19:03:33,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:33,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:03:33,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:33,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:03:33,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:03:33,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:33,992 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) [2024-06-03 19:03:33,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:33,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:33,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:34,230 INFO L124 PetriNetUnfolderBase]: 202/381 cut-off events. [2024-06-03 19:03:34,230 INFO L125 PetriNetUnfolderBase]: For 3322/3322 co-relation queries the response was YES. [2024-06-03 19:03:34,231 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. [2024-06-03 19:03:34,233 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 18 changer transitions 0/80 dead transitions. [2024-06-03 19:03:34,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 80 transitions, 653 flow [2024-06-03 19:03:34,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:03:34,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:03:34,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-03 19:03:34,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 19:03:34,234 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 427 flow. Second operand 8 states and 104 transitions. [2024-06-03 19:03:34,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 80 transitions, 653 flow [2024-06-03 19:03:34,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 623 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-03 19:03:34,238 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 466 flow [2024-06-03 19:03:34,238 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} [2024-06-03 19:03:34,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-03 19:03:34,239 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 466 flow [2024-06-03 19:03:34,239 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) [2024-06-03 19:03:34,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:34,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:34,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 19:03:34,240 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)] === [2024-06-03 19:03:34,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:34,240 INFO L85 PathProgramCache]: Analyzing trace with hash -655222065, now seen corresponding path program 1 times [2024-06-03 19:03:34,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:34,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51002634] [2024-06-03 19:03:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:34,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:35,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:35,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51002634] [2024-06-03 19:03:35,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51002634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:35,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:35,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:03:35,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3831506] [2024-06-03 19:03:35,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:35,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:03:35,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:35,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:03:35,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:03:35,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:35,167 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) [2024-06-03 19:03:35,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:35,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:35,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:35,416 INFO L124 PetriNetUnfolderBase]: 208/391 cut-off events. [2024-06-03 19:03:35,416 INFO L125 PetriNetUnfolderBase]: For 3905/3905 co-relation queries the response was YES. [2024-06-03 19:03:35,417 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. [2024-06-03 19:03:35,419 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 21 changer transitions 0/81 dead transitions. [2024-06-03 19:03:35,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 688 flow [2024-06-03 19:03:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:03:35,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:03:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-03 19:03:35,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-03 19:03:35,420 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 466 flow. Second operand 8 states and 103 transitions. [2024-06-03 19:03:35,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 688 flow [2024-06-03 19:03:35,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 635 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-03 19:03:35,424 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 492 flow [2024-06-03 19:03:35,424 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} [2024-06-03 19:03:35,425 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-03 19:03:35,425 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 492 flow [2024-06-03 19:03:35,425 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) [2024-06-03 19:03:35,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:35,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:35,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 19:03:35,426 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)] === [2024-06-03 19:03:35,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash -650580435, now seen corresponding path program 2 times [2024-06-03 19:03:35,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:35,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301821035] [2024-06-03 19:03:35,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:35,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:36,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:36,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301821035] [2024-06-03 19:03:36,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301821035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:36,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:36,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:03:36,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918849582] [2024-06-03 19:03:36,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:36,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:03:36,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:36,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:03:36,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:03:36,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:36,353 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) [2024-06-03 19:03:36,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:36,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:36,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:36,577 INFO L124 PetriNetUnfolderBase]: 214/401 cut-off events. [2024-06-03 19:03:36,577 INFO L125 PetriNetUnfolderBase]: For 4534/4534 co-relation queries the response was YES. [2024-06-03 19:03:36,578 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. [2024-06-03 19:03:36,580 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 23 changer transitions 0/82 dead transitions. [2024-06-03 19:03:36,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 718 flow [2024-06-03 19:03:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:03:36,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:03:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-03 19:03:36,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-03 19:03:36,581 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 492 flow. Second operand 8 states and 103 transitions. [2024-06-03 19:03:36,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 718 flow [2024-06-03 19:03:36,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 663 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-03 19:03:36,586 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 525 flow [2024-06-03 19:03:36,586 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} [2024-06-03 19:03:36,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-03 19:03:36,586 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 525 flow [2024-06-03 19:03:36,587 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) [2024-06-03 19:03:36,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:36,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:36,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 19:03:36,587 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)] === [2024-06-03 19:03:36,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:36,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1957835775, now seen corresponding path program 3 times [2024-06-03 19:03:36,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:36,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620139013] [2024-06-03 19:03:36,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:36,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:37,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:37,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620139013] [2024-06-03 19:03:37,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620139013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:37,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:37,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:03:37,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430083103] [2024-06-03 19:03:37,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:37,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:03:37,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:37,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:03:37,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:03:37,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:37,442 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) [2024-06-03 19:03:37,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:37,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:37,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:37,680 INFO L124 PetriNetUnfolderBase]: 217/406 cut-off events. [2024-06-03 19:03:37,680 INFO L125 PetriNetUnfolderBase]: For 5020/5020 co-relation queries the response was YES. [2024-06-03 19:03:37,681 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. [2024-06-03 19:03:37,683 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 29 changer transitions 0/83 dead transitions. [2024-06-03 19:03:37,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 739 flow [2024-06-03 19:03:37,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:03:37,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:03:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-03 19:03:37,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-03 19:03:37,684 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 525 flow. Second operand 8 states and 103 transitions. [2024-06-03 19:03:37,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 739 flow [2024-06-03 19:03:37,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 673 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-03 19:03:37,690 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 546 flow [2024-06-03 19:03:37,690 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} [2024-06-03 19:03:37,690 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-03 19:03:37,690 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 546 flow [2024-06-03 19:03:37,690 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) [2024-06-03 19:03:37,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:37,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:37,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 19:03:37,691 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)] === [2024-06-03 19:03:37,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:37,691 INFO L85 PathProgramCache]: Analyzing trace with hash -650573677, now seen corresponding path program 1 times [2024-06-03 19:03:37,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:37,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038409407] [2024-06-03 19:03:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:37,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:38,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:38,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038409407] [2024-06-03 19:03:38,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038409407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:38,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:38,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:03:38,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472027220] [2024-06-03 19:03:38,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:38,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:03:38,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:38,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:03:38,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:03:38,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:38,581 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) [2024-06-03 19:03:38,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:38,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:38,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:38,761 INFO L124 PetriNetUnfolderBase]: 220/411 cut-off events. [2024-06-03 19:03:38,761 INFO L125 PetriNetUnfolderBase]: For 5426/5426 co-relation queries the response was YES. [2024-06-03 19:03:38,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 411 events. 220/411 cut-off events. For 5426/5426 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1629 event pairs, 38 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 2143. Up to 365 conditions per place. [2024-06-03 19:03:38,764 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 14 changer transitions 0/85 dead transitions. [2024-06-03 19:03:38,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 85 transitions, 758 flow [2024-06-03 19:03:38,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:03:38,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:03:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-03 19:03:38,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-03 19:03:38,765 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 546 flow. Second operand 8 states and 98 transitions. [2024-06-03 19:03:38,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 85 transitions, 758 flow [2024-06-03 19:03:38,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 687 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-03 19:03:38,771 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 528 flow [2024-06-03 19:03:38,771 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=528, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-03 19:03:38,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-03 19:03:38,772 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 528 flow [2024-06-03 19:03:38,772 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) [2024-06-03 19:03:38,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:38,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:38,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 19:03:38,773 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)] === [2024-06-03 19:03:38,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:38,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1460708909, now seen corresponding path program 4 times [2024-06-03 19:03:38,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:38,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455585164] [2024-06-03 19:03:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:38,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:39,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:39,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455585164] [2024-06-03 19:03:39,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455585164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:39,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:39,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:03:39,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441189058] [2024-06-03 19:03:39,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:39,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:03:39,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:39,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:03:39,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:03:39,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:39,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 528 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) [2024-06-03 19:03:39,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:39,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:39,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:39,911 INFO L124 PetriNetUnfolderBase]: 226/422 cut-off events. [2024-06-03 19:03:39,911 INFO L125 PetriNetUnfolderBase]: For 6147/6150 co-relation queries the response was YES. [2024-06-03 19:03:39,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 422 events. 226/422 cut-off events. For 6147/6150 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1680 event pairs, 46 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 2216. Up to 327 conditions per place. [2024-06-03 19:03:39,914 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 27 changer transitions 0/87 dead transitions. [2024-06-03 19:03:39,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 87 transitions, 776 flow [2024-06-03 19:03:39,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:03:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:03:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-03 19:03:39,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-03 19:03:39,917 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 528 flow. Second operand 8 states and 102 transitions. [2024-06-03 19:03:39,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 87 transitions, 776 flow [2024-06-03 19:03:39,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 739 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-03 19:03:39,922 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 597 flow [2024-06-03 19:03:39,923 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} [2024-06-03 19:03:39,923 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-03 19:03:39,923 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 597 flow [2024-06-03 19:03:39,923 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) [2024-06-03 19:03:39,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:39,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:39,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 19:03:39,924 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)] === [2024-06-03 19:03:39,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:39,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1460715667, now seen corresponding path program 2 times [2024-06-03 19:03:39,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:39,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129863502] [2024-06-03 19:03:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:39,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:40,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:40,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:40,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129863502] [2024-06-03 19:03:40,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129863502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:40,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:40,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:03:40,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229341629] [2024-06-03 19:03:40,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:40,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:03:40,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:40,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:03:40,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:03:40,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:40,934 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) [2024-06-03 19:03:40,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:40,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:40,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:41,084 INFO L124 PetriNetUnfolderBase]: 229/427 cut-off events. [2024-06-03 19:03:41,085 INFO L125 PetriNetUnfolderBase]: For 6718/6721 co-relation queries the response was YES. [2024-06-03 19:03:41,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 427 events. 229/427 cut-off events. For 6718/6721 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1706 event pairs, 41 based on Foata normal form. 3/426 useless extension candidates. Maximal degree in co-relation 2352. Up to 374 conditions per place. [2024-06-03 19:03:41,087 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 17 changer transitions 0/88 dead transitions. [2024-06-03 19:03:41,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 88 transitions, 813 flow [2024-06-03 19:03:41,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:03:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:03:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-03 19:03:41,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-03 19:03:41,088 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 597 flow. Second operand 8 states and 97 transitions. [2024-06-03 19:03:41,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 88 transitions, 813 flow [2024-06-03 19:03:41,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 729 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-03 19:03:41,096 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 576 flow [2024-06-03 19:03:41,096 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=576, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-06-03 19:03:41,097 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-03 19:03:41,097 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 576 flow [2024-06-03 19:03:41,097 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) [2024-06-03 19:03:41,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:41,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:41,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 19:03:41,097 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)] === [2024-06-03 19:03:41,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:41,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1469286547, now seen corresponding path program 3 times [2024-06-03 19:03:41,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:41,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047092979] [2024-06-03 19:03:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:41,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:42,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:42,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047092979] [2024-06-03 19:03:42,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047092979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:42,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:42,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:03:42,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626853117] [2024-06-03 19:03:42,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:42,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:03:42,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:42,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:03:42,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:03:42,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:42,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 576 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) [2024-06-03 19:03:42,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:42,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:42,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:42,334 INFO L124 PetriNetUnfolderBase]: 232/431 cut-off events. [2024-06-03 19:03:42,335 INFO L125 PetriNetUnfolderBase]: For 7126/7126 co-relation queries the response was YES. [2024-06-03 19:03:42,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2412 conditions, 431 events. 232/431 cut-off events. For 7126/7126 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1712 event pairs, 42 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 2369. Up to 395 conditions per place. [2024-06-03 19:03:42,338 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 76 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2024-06-03 19:03:42,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 91 transitions, 808 flow [2024-06-03 19:03:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:03:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:03:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-03 19:03:42,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-03 19:03:42,339 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 576 flow. Second operand 8 states and 95 transitions. [2024-06-03 19:03:42,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 91 transitions, 808 flow [2024-06-03 19:03:42,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 91 transitions, 761 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-03 19:03:42,346 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 603 flow [2024-06-03 19:03:42,346 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=603, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2024-06-03 19:03:42,346 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-03 19:03:42,346 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 603 flow [2024-06-03 19:03:42,346 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) [2024-06-03 19:03:42,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:42,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:42,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 19:03:42,347 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)] === [2024-06-03 19:03:42,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1468989629, now seen corresponding path program 5 times [2024-06-03 19:03:42,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:42,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049861437] [2024-06-03 19:03:42,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:42,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:43,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:43,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049861437] [2024-06-03 19:03:43,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049861437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:43,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:43,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:03:43,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990057640] [2024-06-03 19:03:43,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:43,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:03:43,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:43,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:03:43,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:03:43,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:43,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 603 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) [2024-06-03 19:03:43,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:43,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:43,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:43,453 INFO L124 PetriNetUnfolderBase]: 235/437 cut-off events. [2024-06-03 19:03:43,453 INFO L125 PetriNetUnfolderBase]: For 7831/7834 co-relation queries the response was YES. [2024-06-03 19:03:43,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2489 conditions, 437 events. 235/437 cut-off events. For 7831/7834 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1749 event pairs, 46 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2444. Up to 304 conditions per place. [2024-06-03 19:03:43,458 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 43 changer transitions 0/97 dead transitions. [2024-06-03 19:03:43,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 97 transitions, 925 flow [2024-06-03 19:03:43,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:03:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:03:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-03 19:03:43,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 19:03:43,460 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 603 flow. Second operand 8 states and 104 transitions. [2024-06-03 19:03:43,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 97 transitions, 925 flow [2024-06-03 19:03:43,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 878 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-03 19:03:43,471 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 733 flow [2024-06-03 19:03:43,471 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} [2024-06-03 19:03:43,472 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-03 19:03:43,472 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 733 flow [2024-06-03 19:03:43,472 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) [2024-06-03 19:03:43,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:43,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:43,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 19:03:43,472 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)] === [2024-06-03 19:03:43,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:43,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1468989877, now seen corresponding path program 4 times [2024-06-03 19:03:43,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:43,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643407862] [2024-06-03 19:03:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:43,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:44,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:44,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643407862] [2024-06-03 19:03:44,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643407862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:44,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:44,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:03:44,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946459097] [2024-06-03 19:03:44,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:44,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:03:44,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:44,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:03:44,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:03:44,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:44,405 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) [2024-06-03 19:03:44,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:44,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:44,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:44,554 INFO L124 PetriNetUnfolderBase]: 233/434 cut-off events. [2024-06-03 19:03:44,554 INFO L125 PetriNetUnfolderBase]: For 8503/8506 co-relation queries the response was YES. [2024-06-03 19:03:44,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2639 conditions, 434 events. 233/434 cut-off events. For 8503/8506 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1753 event pairs, 41 based on Foata normal form. 3/433 useless extension candidates. Maximal degree in co-relation 2591. Up to 360 conditions per place. [2024-06-03 19:03:44,557 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 27 changer transitions 0/98 dead transitions. [2024-06-03 19:03:44,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 977 flow [2024-06-03 19:03:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:03:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:03:44,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-03 19:03:44,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 19:03:44,559 INFO L175 Difference]: Start difference. First operand has 96 places, 87 transitions, 733 flow. Second operand 8 states and 100 transitions. [2024-06-03 19:03:44,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 977 flow [2024-06-03 19:03:44,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 98 transitions, 917 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-03 19:03:44,567 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 764 flow [2024-06-03 19:03:44,568 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=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2024-06-03 19:03:44,568 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-03 19:03:44,568 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 764 flow [2024-06-03 19:03:44,568 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) [2024-06-03 19:03:44,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:44,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:44,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 19:03:44,569 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)] === [2024-06-03 19:03:44,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:44,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1460715419, now seen corresponding path program 6 times [2024-06-03 19:03:44,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:44,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47781031] [2024-06-03 19:03:44,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:44,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:45,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:45,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47781031] [2024-06-03 19:03:45,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47781031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:45,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:45,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:03:45,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405042922] [2024-06-03 19:03:45,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:45,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:03:45,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:45,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:03:45,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:03:45,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:45,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 764 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) [2024-06-03 19:03:45,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:45,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:45,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:45,645 INFO L124 PetriNetUnfolderBase]: 231/431 cut-off events. [2024-06-03 19:03:45,645 INFO L125 PetriNetUnfolderBase]: For 8679/8682 co-relation queries the response was YES. [2024-06-03 19:03:45,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2652 conditions, 431 events. 231/431 cut-off events. For 8679/8682 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1736 event pairs, 46 based on Foata normal form. 1/427 useless extension candidates. Maximal degree in co-relation 2602. Up to 330 conditions per place. [2024-06-03 19:03:45,649 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 30 changer transitions 0/99 dead transitions. [2024-06-03 19:03:45,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 99 transitions, 1008 flow [2024-06-03 19:03:45,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:03:45,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:03:45,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-03 19:03:45,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 19:03:45,650 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 764 flow. Second operand 8 states and 104 transitions. [2024-06-03 19:03:45,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 99 transitions, 1008 flow [2024-06-03 19:03:45,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 99 transitions, 933 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-03 19:03:45,658 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 754 flow [2024-06-03 19:03:45,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=754, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2024-06-03 19:03:45,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-03 19:03:45,659 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 754 flow [2024-06-03 19:03:45,659 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) [2024-06-03 19:03:45,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:45,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:45,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 19:03:45,660 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)] === [2024-06-03 19:03:45,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:45,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1469297459, now seen corresponding path program 1 times [2024-06-03 19:03:45,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:45,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526773411] [2024-06-03 19:03:45,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:45,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:47,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:47,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526773411] [2024-06-03 19:03:47,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526773411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:47,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:47,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:03:47,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100872945] [2024-06-03 19:03:47,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:47,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:03:47,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:47,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:03:47,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:03:47,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-03 19:03:47,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 754 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:03:47,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:47,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-03 19:03:47,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:47,330 INFO L124 PetriNetUnfolderBase]: 213/408 cut-off events. [2024-06-03 19:03:47,330 INFO L125 PetriNetUnfolderBase]: For 8885/8890 co-relation queries the response was YES. [2024-06-03 19:03:47,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2485 conditions, 408 events. 213/408 cut-off events. For 8885/8890 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1663 event pairs, 39 based on Foata normal form. 7/412 useless extension candidates. Maximal degree in co-relation 2434. Up to 338 conditions per place. [2024-06-03 19:03:47,333 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-06-03 19:03:47,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 99 transitions, 946 flow [2024-06-03 19:03:47,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:03:47,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:03:47,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-03 19:03:47,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-03 19:03:47,334 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 754 flow. Second operand 9 states and 112 transitions. [2024-06-03 19:03:47,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 99 transitions, 946 flow [2024-06-03 19:03:47,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 831 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-03 19:03:47,342 INFO L231 Difference]: Finished difference. Result has 103 places, 89 transitions, 669 flow [2024-06-03 19:03:47,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=669, PETRI_PLACES=103, PETRI_TRANSITIONS=89} [2024-06-03 19:03:47,343 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-03 19:03:47,343 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 89 transitions, 669 flow [2024-06-03 19:03:47,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:03:47,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:47,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:47,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 19:03:47,343 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)] === [2024-06-03 19:03:47,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:47,344 INFO L85 PathProgramCache]: Analyzing trace with hash -115114542, now seen corresponding path program 1 times [2024-06-03 19:03:47,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:47,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619225860] [2024-06-03 19:03:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:47,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:48,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:48,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619225860] [2024-06-03 19:03:48,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619225860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:48,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:48,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:03:48,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497378699] [2024-06-03 19:03:48,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:48,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:03:48,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:48,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:03:48,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:03:48,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:48,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 89 transitions, 669 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) [2024-06-03 19:03:48,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:48,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:48,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:48,767 INFO L124 PetriNetUnfolderBase]: 231/432 cut-off events. [2024-06-03 19:03:48,767 INFO L125 PetriNetUnfolderBase]: For 9146/9146 co-relation queries the response was YES. [2024-06-03 19:03:48,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2569 conditions, 432 events. 231/432 cut-off events. For 9146/9146 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1736 event pairs, 36 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 2518. Up to 358 conditions per place. [2024-06-03 19:03:48,771 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 85 selfloop transitions, 20 changer transitions 0/108 dead transitions. [2024-06-03 19:03:48,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 108 transitions, 963 flow [2024-06-03 19:03:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:03:48,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:03:48,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-03 19:03:48,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 19:03:48,773 INFO L175 Difference]: Start difference. First operand has 103 places, 89 transitions, 669 flow. Second operand 9 states and 114 transitions. [2024-06-03 19:03:48,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 108 transitions, 963 flow [2024-06-03 19:03:48,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 915 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-03 19:03:48,796 INFO L231 Difference]: Finished difference. Result has 103 places, 91 transitions, 704 flow [2024-06-03 19:03:48,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=704, PETRI_PLACES=103, PETRI_TRANSITIONS=91} [2024-06-03 19:03:48,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-03 19:03:48,797 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 704 flow [2024-06-03 19:03:48,797 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) [2024-06-03 19:03:48,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:48,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:48,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 19:03:48,798 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)] === [2024-06-03 19:03:48,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:48,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1162954027, now seen corresponding path program 1 times [2024-06-03 19:03:48,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:48,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864789043] [2024-06-03 19:03:48,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:48,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:49,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:49,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864789043] [2024-06-03 19:03:49,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864789043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:49,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:49,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:03:49,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892478947] [2024-06-03 19:03:49,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:49,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:03:49,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:49,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:03:49,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:03:49,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:49,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 704 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) [2024-06-03 19:03:49,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:49,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:49,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:50,028 INFO L124 PetriNetUnfolderBase]: 237/442 cut-off events. [2024-06-03 19:03:50,028 INFO L125 PetriNetUnfolderBase]: For 10309/10309 co-relation queries the response was YES. [2024-06-03 19:03:50,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 442 events. 237/442 cut-off events. For 10309/10309 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1781 event pairs, 35 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2632. Up to 359 conditions per place. [2024-06-03 19:03:50,031 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 24 changer transitions 0/109 dead transitions. [2024-06-03 19:03:50,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 109 transitions, 1018 flow [2024-06-03 19:03:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:03:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:03:50,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-03 19:03:50,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 19:03:50,032 INFO L175 Difference]: Start difference. First operand has 103 places, 91 transitions, 704 flow. Second operand 9 states and 114 transitions. [2024-06-03 19:03:50,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 109 transitions, 1018 flow [2024-06-03 19:03:50,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 109 transitions, 951 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-03 19:03:50,042 INFO L231 Difference]: Finished difference. Result has 105 places, 94 transitions, 743 flow [2024-06-03 19:03:50,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=743, PETRI_PLACES=105, PETRI_TRANSITIONS=94} [2024-06-03 19:03:50,043 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-03 19:03:50,043 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 94 transitions, 743 flow [2024-06-03 19:03:50,043 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) [2024-06-03 19:03:50,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:50,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:50,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 19:03:50,043 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)] === [2024-06-03 19:03:50,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1162953810, now seen corresponding path program 2 times [2024-06-03 19:03:50,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:50,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911810947] [2024-06-03 19:03:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:50,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:51,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:51,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911810947] [2024-06-03 19:03:51,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911810947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:51,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:51,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:03:51,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206825480] [2024-06-03 19:03:51,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:51,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:03:51,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:51,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:03:51,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:03:51,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:51,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 94 transitions, 743 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) [2024-06-03 19:03:51,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:51,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:51,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:51,705 INFO L124 PetriNetUnfolderBase]: 240/449 cut-off events. [2024-06-03 19:03:51,705 INFO L125 PetriNetUnfolderBase]: For 10898/10898 co-relation queries the response was YES. [2024-06-03 19:03:51,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2795 conditions, 449 events. 240/449 cut-off events. For 10898/10898 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1824 event pairs, 35 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 2744. Up to 367 conditions per place. [2024-06-03 19:03:51,708 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 85 selfloop transitions, 23 changer transitions 0/111 dead transitions. [2024-06-03 19:03:51,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 111 transitions, 1057 flow [2024-06-03 19:03:51,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:03:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:03:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-03 19:03:51,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-03 19:03:51,710 INFO L175 Difference]: Start difference. First operand has 105 places, 94 transitions, 743 flow. Second operand 9 states and 113 transitions. [2024-06-03 19:03:51,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 111 transitions, 1057 flow [2024-06-03 19:03:51,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 111 transitions, 973 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-03 19:03:51,722 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 754 flow [2024-06-03 19:03:51,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=754, PETRI_PLACES=107, PETRI_TRANSITIONS=96} [2024-06-03 19:03:51,722 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-03 19:03:51,722 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 754 flow [2024-06-03 19:03:51,722 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) [2024-06-03 19:03:51,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:51,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:51,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 19:03:51,723 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)] === [2024-06-03 19:03:51,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:51,723 INFO L85 PathProgramCache]: Analyzing trace with hash -91168406, now seen corresponding path program 3 times [2024-06-03 19:03:51,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:51,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655741840] [2024-06-03 19:03:51,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:51,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:52,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:52,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:52,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655741840] [2024-06-03 19:03:52,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655741840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:52,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:52,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:03:52,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209233430] [2024-06-03 19:03:52,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:52,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:03:52,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:52,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:03:52,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:03:52,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:52,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 754 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) [2024-06-03 19:03:52,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:52,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:52,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:53,247 INFO L124 PetriNetUnfolderBase]: 243/456 cut-off events. [2024-06-03 19:03:53,247 INFO L125 PetriNetUnfolderBase]: For 11860/11860 co-relation queries the response was YES. [2024-06-03 19:03:53,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2852 conditions, 456 events. 243/456 cut-off events. For 11860/11860 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1862 event pairs, 37 based on Foata normal form. 1/455 useless extension candidates. Maximal degree in co-relation 2800. Up to 365 conditions per place. [2024-06-03 19:03:53,250 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 83 selfloop transitions, 25 changer transitions 0/111 dead transitions. [2024-06-03 19:03:53,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 1078 flow [2024-06-03 19:03:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:03:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:03:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-03 19:03:53,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-03 19:03:53,251 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 754 flow. Second operand 9 states and 113 transitions. [2024-06-03 19:03:53,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 1078 flow [2024-06-03 19:03:53,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 111 transitions, 999 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-03 19:03:53,262 INFO L231 Difference]: Finished difference. Result has 109 places, 98 transitions, 778 flow [2024-06-03 19:03:53,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=778, PETRI_PLACES=109, PETRI_TRANSITIONS=98} [2024-06-03 19:03:53,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-03 19:03:53,263 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 98 transitions, 778 flow [2024-06-03 19:03:53,263 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) [2024-06-03 19:03:53,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:53,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:53,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 19:03:53,263 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)] === [2024-06-03 19:03:53,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:53,263 INFO L85 PathProgramCache]: Analyzing trace with hash -91168189, now seen corresponding path program 2 times [2024-06-03 19:03:53,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:53,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131170339] [2024-06-03 19:03:53,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:53,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:54,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:54,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131170339] [2024-06-03 19:03:54,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131170339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:54,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:54,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:03:54,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897024861] [2024-06-03 19:03:54,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:54,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:03:54,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:54,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:03:54,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:03:54,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:54,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 98 transitions, 778 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) [2024-06-03 19:03:54,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:54,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:54,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:54,435 INFO L124 PetriNetUnfolderBase]: 255/476 cut-off events. [2024-06-03 19:03:54,435 INFO L125 PetriNetUnfolderBase]: For 14080/14080 co-relation queries the response was YES. [2024-06-03 19:03:54,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3017 conditions, 476 events. 255/476 cut-off events. For 14080/14080 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1963 event pairs, 37 based on Foata normal form. 4/478 useless extension candidates. Maximal degree in co-relation 2964. Up to 376 conditions per place. [2024-06-03 19:03:54,438 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 26 changer transitions 0/115 dead transitions. [2024-06-03 19:03:54,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 115 transitions, 1126 flow [2024-06-03 19:03:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:03:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:03:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-03 19:03:54,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-03 19:03:54,439 INFO L175 Difference]: Start difference. First operand has 109 places, 98 transitions, 778 flow. Second operand 9 states and 115 transitions. [2024-06-03 19:03:54,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 115 transitions, 1126 flow [2024-06-03 19:03:54,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 115 transitions, 1039 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-03 19:03:54,452 INFO L231 Difference]: Finished difference. Result has 111 places, 101 transitions, 803 flow [2024-06-03 19:03:54,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=803, PETRI_PLACES=111, PETRI_TRANSITIONS=101} [2024-06-03 19:03:54,453 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-03 19:03:54,453 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 101 transitions, 803 flow [2024-06-03 19:03:54,453 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) [2024-06-03 19:03:54,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:54,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:54,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 19:03:54,453 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)] === [2024-06-03 19:03:54,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:54,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1307046367, now seen corresponding path program 3 times [2024-06-03 19:03:54,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:54,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440451318] [2024-06-03 19:03:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:54,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:55,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:55,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440451318] [2024-06-03 19:03:55,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440451318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:55,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:55,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:03:55,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917765486] [2024-06-03 19:03:55,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:55,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:03:55,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:55,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:03:55,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:03:55,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:55,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 101 transitions, 803 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) [2024-06-03 19:03:55,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:55,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:55,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:55,709 INFO L124 PetriNetUnfolderBase]: 286/526 cut-off events. [2024-06-03 19:03:55,710 INFO L125 PetriNetUnfolderBase]: For 16655/16655 co-relation queries the response was YES. [2024-06-03 19:03:55,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3568 conditions, 526 events. 286/526 cut-off events. For 16655/16655 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2208 event pairs, 36 based on Foata normal form. 2/526 useless extension candidates. Maximal degree in co-relation 3514. Up to 371 conditions per place. [2024-06-03 19:03:55,713 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 83 selfloop transitions, 40 changer transitions 0/126 dead transitions. [2024-06-03 19:03:55,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 126 transitions, 1389 flow [2024-06-03 19:03:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:03:55,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:03:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-03 19:03:55,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-03 19:03:55,715 INFO L175 Difference]: Start difference. First operand has 111 places, 101 transitions, 803 flow. Second operand 9 states and 120 transitions. [2024-06-03 19:03:55,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 126 transitions, 1389 flow [2024-06-03 19:03:55,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 126 transitions, 1303 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-03 19:03:55,730 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 979 flow [2024-06-03 19:03:55,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=979, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2024-06-03 19:03:55,731 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-03 19:03:55,731 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 979 flow [2024-06-03 19:03:55,731 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) [2024-06-03 19:03:55,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:55,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:55,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 19:03:55,732 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)] === [2024-06-03 19:03:55,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:55,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1307046150, now seen corresponding path program 4 times [2024-06-03 19:03:55,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:55,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035652494] [2024-06-03 19:03:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:55,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:56,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:56,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035652494] [2024-06-03 19:03:56,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035652494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:56,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:56,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:03:56,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776955344] [2024-06-03 19:03:56,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:56,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:03:56,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:56,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:03:56,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:03:56,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:56,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 979 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) [2024-06-03 19:03:56,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:56,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:56,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:57,114 INFO L124 PetriNetUnfolderBase]: 289/533 cut-off events. [2024-06-03 19:03:57,114 INFO L125 PetriNetUnfolderBase]: For 17677/17677 co-relation queries the response was YES. [2024-06-03 19:03:57,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3741 conditions, 533 events. 289/533 cut-off events. For 17677/17677 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2259 event pairs, 39 based on Foata normal form. 1/532 useless extension candidates. Maximal degree in co-relation 3685. Up to 418 conditions per place. [2024-06-03 19:03:57,117 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 87 selfloop transitions, 33 changer transitions 0/123 dead transitions. [2024-06-03 19:03:57,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 1299 flow [2024-06-03 19:03:57,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:03:57,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:03:57,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-03 19:03:57,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-03 19:03:57,118 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 979 flow. Second operand 9 states and 113 transitions. [2024-06-03 19:03:57,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 1299 flow [2024-06-03 19:03:57,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 123 transitions, 1233 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-03 19:03:57,135 INFO L231 Difference]: Finished difference. Result has 119 places, 112 transitions, 1040 flow [2024-06-03 19:03:57,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1040, PETRI_PLACES=119, PETRI_TRANSITIONS=112} [2024-06-03 19:03:57,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-03 19:03:57,136 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 112 transitions, 1040 flow [2024-06-03 19:03:57,136 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) [2024-06-03 19:03:57,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:57,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:57,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 19:03:57,137 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)] === [2024-06-03 19:03:57,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:57,137 INFO L85 PathProgramCache]: Analyzing trace with hash -90958939, now seen corresponding path program 4 times [2024-06-03 19:03:57,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:57,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428951466] [2024-06-03 19:03:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:57,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:58,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:58,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428951466] [2024-06-03 19:03:58,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428951466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:58,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:58,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:03:58,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630564957] [2024-06-03 19:03:58,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:58,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:03:58,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:58,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:03:58,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:03:58,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:58,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 112 transitions, 1040 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) [2024-06-03 19:03:58,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:58,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:58,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:58,370 INFO L124 PetriNetUnfolderBase]: 287/530 cut-off events. [2024-06-03 19:03:58,370 INFO L125 PetriNetUnfolderBase]: For 17810/17810 co-relation queries the response was YES. [2024-06-03 19:03:58,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3691 conditions, 530 events. 287/530 cut-off events. For 17810/17810 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2242 event pairs, 38 based on Foata normal form. 1/529 useless extension candidates. Maximal degree in co-relation 3634. Up to 403 conditions per place. [2024-06-03 19:03:58,374 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 39 changer transitions 0/129 dead transitions. [2024-06-03 19:03:58,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 129 transitions, 1389 flow [2024-06-03 19:03:58,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:03:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:03:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-03 19:03:58,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-03 19:03:58,385 INFO L175 Difference]: Start difference. First operand has 119 places, 112 transitions, 1040 flow. Second operand 9 states and 115 transitions. [2024-06-03 19:03:58,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 129 transitions, 1389 flow [2024-06-03 19:03:58,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 129 transitions, 1278 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-03 19:03:58,403 INFO L231 Difference]: Finished difference. Result has 122 places, 118 transitions, 1104 flow [2024-06-03 19:03:58,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1104, PETRI_PLACES=122, PETRI_TRANSITIONS=118} [2024-06-03 19:03:58,404 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-03 19:03:58,404 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 118 transitions, 1104 flow [2024-06-03 19:03:58,404 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) [2024-06-03 19:03:58,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:58,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:58,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 19:03:58,405 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)] === [2024-06-03 19:03:58,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:58,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1307054086, now seen corresponding path program 1 times [2024-06-03 19:03:58,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:58,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999626138] [2024-06-03 19:03:58,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:58,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:03:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:03:59,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:03:59,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999626138] [2024-06-03 19:03:59,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999626138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:03:59,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:03:59,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:03:59,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140339922] [2024-06-03 19:03:59,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:03:59,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:03:59,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:03:59,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:03:59,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:03:59,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:03:59,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 118 transitions, 1104 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) [2024-06-03 19:03:59,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:03:59,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:03:59,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:03:59,755 INFO L124 PetriNetUnfolderBase]: 285/527 cut-off events. [2024-06-03 19:03:59,755 INFO L125 PetriNetUnfolderBase]: For 17731/17731 co-relation queries the response was YES. [2024-06-03 19:03:59,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3686 conditions, 527 events. 285/527 cut-off events. For 17731/17731 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2240 event pairs, 35 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 3627. Up to 470 conditions per place. [2024-06-03 19:03:59,758 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 112 selfloop transitions, 16 changer transitions 0/131 dead transitions. [2024-06-03 19:03:59,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 131 transitions, 1403 flow [2024-06-03 19:03:59,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:03:59,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:03:59,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 19:03:59,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:03:59,759 INFO L175 Difference]: Start difference. First operand has 122 places, 118 transitions, 1104 flow. Second operand 9 states and 108 transitions. [2024-06-03 19:03:59,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 131 transitions, 1403 flow [2024-06-03 19:03:59,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 131 transitions, 1332 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-03 19:03:59,780 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 1081 flow [2024-06-03 19:03:59,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1081, PETRI_PLACES=126, PETRI_TRANSITIONS=119} [2024-06-03 19:03:59,780 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-03 19:03:59,780 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 1081 flow [2024-06-03 19:03:59,781 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) [2024-06-03 19:03:59,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:03:59,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:03:59,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 19:03:59,781 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)] === [2024-06-03 19:03:59,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:03:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1962460705, now seen corresponding path program 5 times [2024-06-03 19:03:59,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:03:59,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157228381] [2024-06-03 19:03:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:03:59,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:03:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:00,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:00,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157228381] [2024-06-03 19:04:00,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157228381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:00,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:00,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:00,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410536766] [2024-06-03 19:04:00,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:00,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:00,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:00,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:00,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:00,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:00,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 119 transitions, 1081 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) [2024-06-03 19:04:00,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:00,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:00,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:00,977 INFO L124 PetriNetUnfolderBase]: 326/594 cut-off events. [2024-06-03 19:04:00,977 INFO L125 PetriNetUnfolderBase]: For 23577/23580 co-relation queries the response was YES. [2024-06-03 19:04:00,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4440 conditions, 594 events. 326/594 cut-off events. For 23577/23580 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2581 event pairs, 45 based on Foata normal form. 2/591 useless extension candidates. Maximal degree in co-relation 4379. Up to 442 conditions per place. [2024-06-03 19:04:00,981 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 102 selfloop transitions, 37 changer transitions 0/142 dead transitions. [2024-06-03 19:04:00,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 142 transitions, 1727 flow [2024-06-03 19:04:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:00,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-03 19:04:00,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-03 19:04:00,982 INFO L175 Difference]: Start difference. First operand has 126 places, 119 transitions, 1081 flow. Second operand 9 states and 121 transitions. [2024-06-03 19:04:00,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 142 transitions, 1727 flow [2024-06-03 19:04:01,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 142 transitions, 1674 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-03 19:04:01,006 INFO L231 Difference]: Finished difference. Result has 129 places, 128 transitions, 1287 flow [2024-06-03 19:04:01,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1287, PETRI_PLACES=129, PETRI_TRANSITIONS=128} [2024-06-03 19:04:01,007 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-03 19:04:01,007 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 128 transitions, 1287 flow [2024-06-03 19:04:01,007 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) [2024-06-03 19:04:01,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:01,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:01,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 19:04:01,007 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)] === [2024-06-03 19:04:01,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:01,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1615965538, now seen corresponding path program 5 times [2024-06-03 19:04:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:01,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678954723] [2024-06-03 19:04:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:01,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:02,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:02,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678954723] [2024-06-03 19:04:02,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678954723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:02,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:02,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:02,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218924614] [2024-06-03 19:04:02,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:02,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:02,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:02,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:02,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:02,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:02,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 128 transitions, 1287 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) [2024-06-03 19:04:02,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:02,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:02,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:02,511 INFO L124 PetriNetUnfolderBase]: 334/611 cut-off events. [2024-06-03 19:04:02,511 INFO L125 PetriNetUnfolderBase]: For 26508/26511 co-relation queries the response was YES. [2024-06-03 19:04:02,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4817 conditions, 611 events. 334/611 cut-off events. For 26508/26511 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2689 event pairs, 46 based on Foata normal form. 1/607 useless extension candidates. Maximal degree in co-relation 4754. Up to 491 conditions per place. [2024-06-03 19:04:02,515 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2024-06-03 19:04:02,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 142 transitions, 1777 flow [2024-06-03 19:04:02,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-03 19:04:02,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-03 19:04:02,528 INFO L175 Difference]: Start difference. First operand has 129 places, 128 transitions, 1287 flow. Second operand 9 states and 115 transitions. [2024-06-03 19:04:02,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 142 transitions, 1777 flow [2024-06-03 19:04:02,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 142 transitions, 1698 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-03 19:04:02,555 INFO L231 Difference]: Finished difference. Result has 135 places, 132 transitions, 1399 flow [2024-06-03 19:04:02,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1399, PETRI_PLACES=135, PETRI_TRANSITIONS=132} [2024-06-03 19:04:02,556 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-03 19:04:02,556 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 132 transitions, 1399 flow [2024-06-03 19:04:02,556 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) [2024-06-03 19:04:02,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:02,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:02,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 19:04:02,556 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)] === [2024-06-03 19:04:02,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:02,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1962452986, now seen corresponding path program 2 times [2024-06-03 19:04:02,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:02,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184962770] [2024-06-03 19:04:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:02,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:04,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:04,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184962770] [2024-06-03 19:04:04,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184962770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:04,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:04,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:04,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843930936] [2024-06-03 19:04:04,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:04,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:04,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:04,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:04,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:04,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:04,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 1399 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) [2024-06-03 19:04:04,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:04,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:04,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:04,396 INFO L124 PetriNetUnfolderBase]: 332/608 cut-off events. [2024-06-03 19:04:04,396 INFO L125 PetriNetUnfolderBase]: For 26990/26993 co-relation queries the response was YES. [2024-06-03 19:04:04,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4801 conditions, 608 events. 332/608 cut-off events. For 26990/26993 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2701 event pairs, 40 based on Foata normal form. 3/607 useless extension candidates. Maximal degree in co-relation 4736. Up to 540 conditions per place. [2024-06-03 19:04:04,400 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 121 selfloop transitions, 19 changer transitions 0/143 dead transitions. [2024-06-03 19:04:04,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 143 transitions, 1716 flow [2024-06-03 19:04:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 19:04:04,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-03 19:04:04,402 INFO L175 Difference]: Start difference. First operand has 135 places, 132 transitions, 1399 flow. Second operand 9 states and 107 transitions. [2024-06-03 19:04:04,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 143 transitions, 1716 flow [2024-06-03 19:04:04,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 143 transitions, 1626 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-03 19:04:04,433 INFO L231 Difference]: Finished difference. Result has 139 places, 133 transitions, 1363 flow [2024-06-03 19:04:04,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1363, PETRI_PLACES=139, PETRI_TRANSITIONS=133} [2024-06-03 19:04:04,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-03 19:04:04,434 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 133 transitions, 1363 flow [2024-06-03 19:04:04,434 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) [2024-06-03 19:04:04,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:04,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:04,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 19:04:04,435 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)] === [2024-06-03 19:04:04,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:04,435 INFO L85 PathProgramCache]: Analyzing trace with hash 496011534, now seen corresponding path program 3 times [2024-06-03 19:04:04,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:04,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416199087] [2024-06-03 19:04:04,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:04,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:05,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:05,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416199087] [2024-06-03 19:04:05,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416199087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:05,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:05,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:05,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301062192] [2024-06-03 19:04:05,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:05,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:05,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:05,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:05,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:05,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:05,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 133 transitions, 1363 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) [2024-06-03 19:04:05,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:05,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:05,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:06,085 INFO L124 PetriNetUnfolderBase]: 335/613 cut-off events. [2024-06-03 19:04:06,085 INFO L125 PetriNetUnfolderBase]: For 28033/28036 co-relation queries the response was YES. [2024-06-03 19:04:06,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4854 conditions, 613 events. 335/613 cut-off events. For 28033/28036 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2710 event pairs, 40 based on Foata normal form. 3/612 useless extension candidates. Maximal degree in co-relation 4787. Up to 524 conditions per place. [2024-06-03 19:04:06,089 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 113 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2024-06-03 19:04:06,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 145 transitions, 1711 flow [2024-06-03 19:04:06,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-03 19:04:06,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-03 19:04:06,101 INFO L175 Difference]: Start difference. First operand has 139 places, 133 transitions, 1363 flow. Second operand 9 states and 110 transitions. [2024-06-03 19:04:06,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 145 transitions, 1711 flow [2024-06-03 19:04:06,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 145 transitions, 1652 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-03 19:04:06,133 INFO L231 Difference]: Finished difference. Result has 141 places, 135 transitions, 1407 flow [2024-06-03 19:04:06,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1407, PETRI_PLACES=141, PETRI_TRANSITIONS=135} [2024-06-03 19:04:06,133 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-03 19:04:06,134 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 135 transitions, 1407 flow [2024-06-03 19:04:06,134 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) [2024-06-03 19:04:06,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:06,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:06,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-03 19:04:06,134 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)] === [2024-06-03 19:04:06,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:06,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1962453265, now seen corresponding path program 6 times [2024-06-03 19:04:06,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:06,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134052433] [2024-06-03 19:04:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:06,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:07,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:07,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134052433] [2024-06-03 19:04:07,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134052433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:07,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:07,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:07,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735477074] [2024-06-03 19:04:07,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:07,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:07,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:07,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:07,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:07,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:07,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 135 transitions, 1407 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) [2024-06-03 19:04:07,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:07,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:07,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:07,524 INFO L124 PetriNetUnfolderBase]: 333/610 cut-off events. [2024-06-03 19:04:07,524 INFO L125 PetriNetUnfolderBase]: For 28669/28672 co-relation queries the response was YES. [2024-06-03 19:04:07,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 610 events. 333/610 cut-off events. For 28669/28672 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2706 event pairs, 43 based on Foata normal form. 1/606 useless extension candidates. Maximal degree in co-relation 4787. Up to 480 conditions per place. [2024-06-03 19:04:07,529 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 37 changer transitions 0/151 dead transitions. [2024-06-03 19:04:07,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 151 transitions, 1914 flow [2024-06-03 19:04:07,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:07,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:07,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-03 19:04:07,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 19:04:07,530 INFO L175 Difference]: Start difference. First operand has 141 places, 135 transitions, 1407 flow. Second operand 9 states and 117 transitions. [2024-06-03 19:04:07,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 151 transitions, 1914 flow [2024-06-03 19:04:07,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 151 transitions, 1827 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-03 19:04:07,562 INFO L231 Difference]: Finished difference. Result has 144 places, 141 transitions, 1527 flow [2024-06-03 19:04:07,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1527, PETRI_PLACES=144, PETRI_TRANSITIONS=141} [2024-06-03 19:04:07,562 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-03 19:04:07,562 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 141 transitions, 1527 flow [2024-06-03 19:04:07,562 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) [2024-06-03 19:04:07,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:07,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:07,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-03 19:04:07,563 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)] === [2024-06-03 19:04:07,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:07,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1962662732, now seen corresponding path program 6 times [2024-06-03 19:04:07,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:07,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301081450] [2024-06-03 19:04:07,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:07,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:08,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:08,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301081450] [2024-06-03 19:04:08,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301081450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:08,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:08,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:08,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426552887] [2024-06-03 19:04:08,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:08,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:08,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:08,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:08,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:08,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:08,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 141 transitions, 1527 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) [2024-06-03 19:04:08,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:08,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:08,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:09,214 INFO L124 PetriNetUnfolderBase]: 331/607 cut-off events. [2024-06-03 19:04:09,214 INFO L125 PetriNetUnfolderBase]: For 29407/29410 co-relation queries the response was YES. [2024-06-03 19:04:09,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4868 conditions, 607 events. 331/607 cut-off events. For 29407/29410 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2680 event pairs, 44 based on Foata normal form. 1/603 useless extension candidates. Maximal degree in co-relation 4798. Up to 497 conditions per place. [2024-06-03 19:04:09,219 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 29 changer transitions 0/150 dead transitions. [2024-06-03 19:04:09,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 150 transitions, 1843 flow [2024-06-03 19:04:09,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-03 19:04:09,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-03 19:04:09,220 INFO L175 Difference]: Start difference. First operand has 144 places, 141 transitions, 1527 flow. Second operand 9 states and 112 transitions. [2024-06-03 19:04:09,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 150 transitions, 1843 flow [2024-06-03 19:04:09,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 150 transitions, 1728 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-03 19:04:09,271 INFO L231 Difference]: Finished difference. Result has 148 places, 141 transitions, 1475 flow [2024-06-03 19:04:09,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1475, PETRI_PLACES=148, PETRI_TRANSITIONS=141} [2024-06-03 19:04:09,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-03 19:04:09,272 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 141 transitions, 1475 flow [2024-06-03 19:04:09,272 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) [2024-06-03 19:04:09,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:09,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:09,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-03 19:04:09,273 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)] === [2024-06-03 19:04:09,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:09,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1962662515, now seen corresponding path program 7 times [2024-06-03 19:04:09,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:09,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836205252] [2024-06-03 19:04:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:09,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:10,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:10,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836205252] [2024-06-03 19:04:10,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836205252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:10,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:10,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:10,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557179959] [2024-06-03 19:04:10,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:10,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:10,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:10,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:10,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:10,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:10,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 141 transitions, 1475 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) [2024-06-03 19:04:10,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:10,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:10,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:10,626 INFO L124 PetriNetUnfolderBase]: 327/601 cut-off events. [2024-06-03 19:04:10,626 INFO L125 PetriNetUnfolderBase]: For 29326/29329 co-relation queries the response was YES. [2024-06-03 19:04:10,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4731 conditions, 601 events. 327/601 cut-off events. For 29326/29329 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2652 event pairs, 42 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 4659. Up to 488 conditions per place. [2024-06-03 19:04:10,630 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 30 changer transitions 0/151 dead transitions. [2024-06-03 19:04:10,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 151 transitions, 1806 flow [2024-06-03 19:04:10,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:10,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:10,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-03 19:04:10,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-03 19:04:10,631 INFO L175 Difference]: Start difference. First operand has 148 places, 141 transitions, 1475 flow. Second operand 9 states and 113 transitions. [2024-06-03 19:04:10,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 151 transitions, 1806 flow [2024-06-03 19:04:10,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 151 transitions, 1677 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-03 19:04:10,667 INFO L231 Difference]: Finished difference. Result has 149 places, 142 transitions, 1427 flow [2024-06-03 19:04:10,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1427, PETRI_PLACES=149, PETRI_TRANSITIONS=142} [2024-06-03 19:04:10,668 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-03 19:04:10,668 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 142 transitions, 1427 flow [2024-06-03 19:04:10,668 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) [2024-06-03 19:04:10,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:10,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:10,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-03 19:04:10,668 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)] === [2024-06-03 19:04:10,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:10,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1705952755, now seen corresponding path program 8 times [2024-06-03 19:04:10,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:10,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611507287] [2024-06-03 19:04:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:10,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:11,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:11,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611507287] [2024-06-03 19:04:11,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611507287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:11,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:11,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:11,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718811108] [2024-06-03 19:04:11,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:11,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:11,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:11,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:11,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:11,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:11,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 142 transitions, 1427 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) [2024-06-03 19:04:11,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:11,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:11,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:11,863 INFO L124 PetriNetUnfolderBase]: 343/627 cut-off events. [2024-06-03 19:04:11,863 INFO L125 PetriNetUnfolderBase]: For 32746/32749 co-relation queries the response was YES. [2024-06-03 19:04:11,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4996 conditions, 627 events. 343/627 cut-off events. For 32746/32749 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2816 event pairs, 43 based on Foata normal form. 2/624 useless extension candidates. Maximal degree in co-relation 4923. Up to 351 conditions per place. [2024-06-03 19:04:11,867 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 75 changer transitions 0/164 dead transitions. [2024-06-03 19:04:11,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 164 transitions, 2207 flow [2024-06-03 19:04:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:11,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-03 19:04:11,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-03 19:04:11,868 INFO L175 Difference]: Start difference. First operand has 149 places, 142 transitions, 1427 flow. Second operand 9 states and 124 transitions. [2024-06-03 19:04:11,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 164 transitions, 2207 flow [2024-06-03 19:04:11,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 164 transitions, 2147 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 19:04:11,905 INFO L231 Difference]: Finished difference. Result has 151 places, 148 transitions, 1629 flow [2024-06-03 19:04:11,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1629, PETRI_PLACES=151, PETRI_TRANSITIONS=148} [2024-06-03 19:04:11,906 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-03 19:04:11,906 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 148 transitions, 1629 flow [2024-06-03 19:04:11,906 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) [2024-06-03 19:04:11,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:11,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:11,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-03 19:04:11,906 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)] === [2024-06-03 19:04:11,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:11,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1705960412, now seen corresponding path program 7 times [2024-06-03 19:04:11,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:11,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652330094] [2024-06-03 19:04:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:11,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:12,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:12,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652330094] [2024-06-03 19:04:12,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652330094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:12,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:12,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:12,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624368505] [2024-06-03 19:04:12,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:12,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:12,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:12,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:12,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:13,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:13,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 148 transitions, 1629 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) [2024-06-03 19:04:13,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:13,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:13,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:13,323 INFO L124 PetriNetUnfolderBase]: 341/624 cut-off events. [2024-06-03 19:04:13,323 INFO L125 PetriNetUnfolderBase]: For 32941/32944 co-relation queries the response was YES. [2024-06-03 19:04:13,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5089 conditions, 624 events. 341/624 cut-off events. For 32941/32944 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2794 event pairs, 44 based on Foata normal form. 1/620 useless extension candidates. Maximal degree in co-relation 5015. Up to 462 conditions per place. [2024-06-03 19:04:13,327 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 50 changer transitions 0/159 dead transitions. [2024-06-03 19:04:13,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 159 transitions, 2025 flow [2024-06-03 19:04:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:13,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-03 19:04:13,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-03 19:04:13,328 INFO L175 Difference]: Start difference. First operand has 151 places, 148 transitions, 1629 flow. Second operand 9 states and 113 transitions. [2024-06-03 19:04:13,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 159 transitions, 2025 flow [2024-06-03 19:04:13,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 159 transitions, 1832 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-03 19:04:13,364 INFO L231 Difference]: Finished difference. Result has 154 places, 150 transitions, 1607 flow [2024-06-03 19:04:13,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1607, PETRI_PLACES=154, PETRI_TRANSITIONS=150} [2024-06-03 19:04:13,365 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-03 19:04:13,365 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 150 transitions, 1607 flow [2024-06-03 19:04:13,365 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) [2024-06-03 19:04:13,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:13,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:13,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-03 19:04:13,365 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)] === [2024-06-03 19:04:13,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:13,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1705960195, now seen corresponding path program 9 times [2024-06-03 19:04:13,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:13,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221006179] [2024-06-03 19:04:13,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:13,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:14,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:14,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221006179] [2024-06-03 19:04:14,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221006179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:14,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:14,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:14,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203433529] [2024-06-03 19:04:14,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:14,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:14,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:14,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:14,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:14,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:14,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 150 transitions, 1607 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) [2024-06-03 19:04:14,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:14,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:14,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:14,554 INFO L124 PetriNetUnfolderBase]: 337/618 cut-off events. [2024-06-03 19:04:14,555 INFO L125 PetriNetUnfolderBase]: For 32555/32558 co-relation queries the response was YES. [2024-06-03 19:04:14,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4814 conditions, 618 events. 337/618 cut-off events. For 32555/32558 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2767 event pairs, 42 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 4740. Up to 345 conditions per place. [2024-06-03 19:04:14,559 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 85 selfloop transitions, 78 changer transitions 0/166 dead transitions. [2024-06-03 19:04:14,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 166 transitions, 2295 flow [2024-06-03 19:04:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:14,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:14,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-03 19:04:14,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-03 19:04:14,560 INFO L175 Difference]: Start difference. First operand has 154 places, 150 transitions, 1607 flow. Second operand 9 states and 123 transitions. [2024-06-03 19:04:14,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 166 transitions, 2295 flow [2024-06-03 19:04:14,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 166 transitions, 2124 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-03 19:04:14,597 INFO L231 Difference]: Finished difference. Result has 157 places, 152 transitions, 1647 flow [2024-06-03 19:04:14,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1647, PETRI_PLACES=157, PETRI_TRANSITIONS=152} [2024-06-03 19:04:14,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-03 19:04:14,597 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 152 transitions, 1647 flow [2024-06-03 19:04:14,597 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) [2024-06-03 19:04:14,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:14,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:14,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-03 19:04:14,598 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)] === [2024-06-03 19:04:14,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:14,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1696755985, now seen corresponding path program 10 times [2024-06-03 19:04:14,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:14,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388036927] [2024-06-03 19:04:14,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:14,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:15,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:15,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388036927] [2024-06-03 19:04:15,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388036927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:15,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:15,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:15,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419121604] [2024-06-03 19:04:15,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:15,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:15,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:15,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:15,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:15,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 152 transitions, 1647 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) [2024-06-03 19:04:15,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:15,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:15,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:15,880 INFO L124 PetriNetUnfolderBase]: 334/613 cut-off events. [2024-06-03 19:04:15,881 INFO L125 PetriNetUnfolderBase]: For 31851/31851 co-relation queries the response was YES. [2024-06-03 19:04:15,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4753 conditions, 613 events. 334/613 cut-off events. For 31851/31851 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2733 event pairs, 38 based on Foata normal form. 2/613 useless extension candidates. Maximal degree in co-relation 4677. Up to 547 conditions per place. [2024-06-03 19:04:15,884 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 144 selfloop transitions, 16 changer transitions 0/163 dead transitions. [2024-06-03 19:04:15,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 163 transitions, 2097 flow [2024-06-03 19:04:15,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:15,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 19:04:15,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-03 19:04:15,885 INFO L175 Difference]: Start difference. First operand has 157 places, 152 transitions, 1647 flow. Second operand 9 states and 109 transitions. [2024-06-03 19:04:15,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 163 transitions, 2097 flow [2024-06-03 19:04:15,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 163 transitions, 1936 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-03 19:04:15,927 INFO L231 Difference]: Finished difference. Result has 160 places, 152 transitions, 1524 flow [2024-06-03 19:04:15,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1524, PETRI_PLACES=160, PETRI_TRANSITIONS=152} [2024-06-03 19:04:15,928 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-03 19:04:15,928 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 152 transitions, 1524 flow [2024-06-03 19:04:15,928 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) [2024-06-03 19:04:15,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:15,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:15,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-03 19:04:15,929 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)] === [2024-06-03 19:04:15,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:15,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1696755706, now seen corresponding path program 4 times [2024-06-03 19:04:15,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:15,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164490402] [2024-06-03 19:04:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:17,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:17,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164490402] [2024-06-03 19:04:17,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164490402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:17,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:17,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:17,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63545212] [2024-06-03 19:04:17,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:17,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:17,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:17,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:17,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:17,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:17,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 152 transitions, 1524 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) [2024-06-03 19:04:17,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:17,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:17,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:17,507 INFO L124 PetriNetUnfolderBase]: 337/618 cut-off events. [2024-06-03 19:04:17,507 INFO L125 PetriNetUnfolderBase]: For 31769/31769 co-relation queries the response was YES. [2024-06-03 19:04:17,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 618 events. 337/618 cut-off events. For 31769/31769 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2760 event pairs, 38 based on Foata normal form. 1/617 useless extension candidates. Maximal degree in co-relation 4579. Up to 567 conditions per place. [2024-06-03 19:04:17,511 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 14 changer transitions 0/163 dead transitions. [2024-06-03 19:04:17,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 163 transitions, 1910 flow [2024-06-03 19:04:17,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-03 19:04:17,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 19:04:17,513 INFO L175 Difference]: Start difference. First operand has 160 places, 152 transitions, 1524 flow. Second operand 9 states and 105 transitions. [2024-06-03 19:04:17,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 163 transitions, 1910 flow [2024-06-03 19:04:17,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 163 transitions, 1850 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 19:04:17,557 INFO L231 Difference]: Finished difference. Result has 160 places, 154 transitions, 1545 flow [2024-06-03 19:04:17,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1545, PETRI_PLACES=160, PETRI_TRANSITIONS=154} [2024-06-03 19:04:17,558 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-03 19:04:17,558 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 154 transitions, 1545 flow [2024-06-03 19:04:17,559 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) [2024-06-03 19:04:17,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:17,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:17,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-03 19:04:17,559 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)] === [2024-06-03 19:04:17,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1696429276, now seen corresponding path program 5 times [2024-06-03 19:04:17,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:17,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452731290] [2024-06-03 19:04:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:17,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:18,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:18,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452731290] [2024-06-03 19:04:18,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452731290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:18,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:18,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:18,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012590500] [2024-06-03 19:04:18,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:18,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:18,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:18,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:18,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:18,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:18,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 154 transitions, 1545 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) [2024-06-03 19:04:18,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:18,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:18,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:19,100 INFO L124 PetriNetUnfolderBase]: 334/613 cut-off events. [2024-06-03 19:04:19,101 INFO L125 PetriNetUnfolderBase]: For 31855/31855 co-relation queries the response was YES. [2024-06-03 19:04:19,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4579 conditions, 613 events. 334/613 cut-off events. For 31855/31855 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2737 event pairs, 38 based on Foata normal form. 1/612 useless extension candidates. Maximal degree in co-relation 4501. Up to 556 conditions per place. [2024-06-03 19:04:19,105 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 143 selfloop transitions, 18 changer transitions 0/164 dead transitions. [2024-06-03 19:04:19,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 164 transitions, 1891 flow [2024-06-03 19:04:19,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:04:19,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:04:19,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 19:04:19,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-03 19:04:19,106 INFO L175 Difference]: Start difference. First operand has 160 places, 154 transitions, 1545 flow. Second operand 10 states and 116 transitions. [2024-06-03 19:04:19,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 164 transitions, 1891 flow [2024-06-03 19:04:19,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 164 transitions, 1812 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-03 19:04:19,151 INFO L231 Difference]: Finished difference. Result has 163 places, 154 transitions, 1507 flow [2024-06-03 19:04:19,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1507, PETRI_PLACES=163, PETRI_TRANSITIONS=154} [2024-06-03 19:04:19,151 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-03 19:04:19,151 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 154 transitions, 1507 flow [2024-06-03 19:04:19,152 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) [2024-06-03 19:04:19,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:19,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:19,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-03 19:04:19,152 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)] === [2024-06-03 19:04:19,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:19,152 INFO L85 PathProgramCache]: Analyzing trace with hash -574682184, now seen corresponding path program 1 times [2024-06-03 19:04:19,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:19,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5609570] [2024-06-03 19:04:19,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:19,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:19,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:19,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5609570] [2024-06-03 19:04:19,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5609570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:19,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:19,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:19,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719404351] [2024-06-03 19:04:19,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:19,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:19,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:19,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:20,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:20,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 154 transitions, 1507 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) [2024-06-03 19:04:20,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:20,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:20,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:20,324 INFO L124 PetriNetUnfolderBase]: 338/621 cut-off events. [2024-06-03 19:04:20,324 INFO L125 PetriNetUnfolderBase]: For 34026/34026 co-relation queries the response was YES. [2024-06-03 19:04:20,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4610 conditions, 621 events. 338/621 cut-off events. For 34026/34026 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2787 event pairs, 15 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 4531. Up to 517 conditions per place. [2024-06-03 19:04:20,328 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 153 selfloop transitions, 18 changer transitions 0/174 dead transitions. [2024-06-03 19:04:20,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 174 transitions, 1919 flow [2024-06-03 19:04:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:20,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-03 19:04:20,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-03 19:04:20,329 INFO L175 Difference]: Start difference. First operand has 163 places, 154 transitions, 1507 flow. Second operand 9 states and 113 transitions. [2024-06-03 19:04:20,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 174 transitions, 1919 flow [2024-06-03 19:04:20,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 174 transitions, 1873 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 19:04:20,373 INFO L231 Difference]: Finished difference. Result has 163 places, 155 transitions, 1519 flow [2024-06-03 19:04:20,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1519, PETRI_PLACES=163, PETRI_TRANSITIONS=155} [2024-06-03 19:04:20,373 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-03 19:04:20,373 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 155 transitions, 1519 flow [2024-06-03 19:04:20,373 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) [2024-06-03 19:04:20,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:20,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:20,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-03 19:04:20,373 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)] === [2024-06-03 19:04:20,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:20,374 INFO L85 PathProgramCache]: Analyzing trace with hash 726413096, now seen corresponding path program 2 times [2024-06-03 19:04:20,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:20,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157852100] [2024-06-03 19:04:20,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:20,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:21,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:21,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:21,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157852100] [2024-06-03 19:04:21,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157852100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:21,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:21,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:21,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931892290] [2024-06-03 19:04:21,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:21,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:21,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:21,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:21,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:21,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:21,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 155 transitions, 1519 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) [2024-06-03 19:04:21,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:21,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:21,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:21,553 INFO L124 PetriNetUnfolderBase]: 342/629 cut-off events. [2024-06-03 19:04:21,554 INFO L125 PetriNetUnfolderBase]: For 35500/35500 co-relation queries the response was YES. [2024-06-03 19:04:21,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4703 conditions, 629 events. 342/629 cut-off events. For 35500/35500 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2859 event pairs, 32 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 4623. Up to 542 conditions per place. [2024-06-03 19:04:21,558 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 152 selfloop transitions, 19 changer transitions 0/174 dead transitions. [2024-06-03 19:04:21,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 174 transitions, 1931 flow [2024-06-03 19:04:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:21,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-03 19:04:21,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 19:04:21,559 INFO L175 Difference]: Start difference. First operand has 163 places, 155 transitions, 1519 flow. Second operand 9 states and 114 transitions. [2024-06-03 19:04:21,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 174 transitions, 1931 flow [2024-06-03 19:04:21,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 174 transitions, 1883 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 19:04:21,606 INFO L231 Difference]: Finished difference. Result has 165 places, 156 transitions, 1533 flow [2024-06-03 19:04:21,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1533, PETRI_PLACES=165, PETRI_TRANSITIONS=156} [2024-06-03 19:04:21,607 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-03 19:04:21,607 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 156 transitions, 1533 flow [2024-06-03 19:04:21,607 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) [2024-06-03 19:04:21,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:21,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:21,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-03 19:04:21,607 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)] === [2024-06-03 19:04:21,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:21,608 INFO L85 PathProgramCache]: Analyzing trace with hash -853549450, now seen corresponding path program 1 times [2024-06-03 19:04:21,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:21,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295084050] [2024-06-03 19:04:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:21,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:22,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:22,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:22,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295084050] [2024-06-03 19:04:22,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295084050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:22,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:22,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:22,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409571764] [2024-06-03 19:04:22,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:22,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:22,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:22,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:22,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:22,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:22,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 156 transitions, 1533 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) [2024-06-03 19:04:22,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:22,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:22,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:23,142 INFO L124 PetriNetUnfolderBase]: 345/634 cut-off events. [2024-06-03 19:04:23,142 INFO L125 PetriNetUnfolderBase]: For 36509/36509 co-relation queries the response was YES. [2024-06-03 19:04:23,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 634 events. 345/634 cut-off events. For 36509/36509 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2883 event pairs, 31 based on Foata normal form. 1/633 useless extension candidates. Maximal degree in co-relation 4695. Up to 547 conditions per place. [2024-06-03 19:04:23,146 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 22 changer transitions 0/176 dead transitions. [2024-06-03 19:04:23,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 176 transitions, 1985 flow [2024-06-03 19:04:23,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:04:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:04:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:04:23,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 19:04:23,147 INFO L175 Difference]: Start difference. First operand has 165 places, 156 transitions, 1533 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:04:23,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 176 transitions, 1985 flow [2024-06-03 19:04:23,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 176 transitions, 1933 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-03 19:04:23,198 INFO L231 Difference]: Finished difference. Result has 168 places, 158 transitions, 1588 flow [2024-06-03 19:04:23,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1588, PETRI_PLACES=168, PETRI_TRANSITIONS=158} [2024-06-03 19:04:23,198 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-03 19:04:23,198 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 158 transitions, 1588 flow [2024-06-03 19:04:23,198 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) [2024-06-03 19:04:23,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:23,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:23,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-03 19:04:23,199 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)] === [2024-06-03 19:04:23,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:23,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1691653364, now seen corresponding path program 3 times [2024-06-03 19:04:23,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:23,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2380984] [2024-06-03 19:04:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:23,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:23,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:23,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2380984] [2024-06-03 19:04:23,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2380984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:23,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:23,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:23,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153522191] [2024-06-03 19:04:23,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:23,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:23,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:23,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:23,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:24,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:24,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 158 transitions, 1588 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) [2024-06-03 19:04:24,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:24,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:24,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:24,367 INFO L124 PetriNetUnfolderBase]: 349/642 cut-off events. [2024-06-03 19:04:24,367 INFO L125 PetriNetUnfolderBase]: For 39276/39276 co-relation queries the response was YES. [2024-06-03 19:04:24,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 642 events. 349/642 cut-off events. For 39276/39276 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2940 event pairs, 31 based on Foata normal form. 2/642 useless extension candidates. Maximal degree in co-relation 4778. Up to 557 conditions per place. [2024-06-03 19:04:24,372 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 152 selfloop transitions, 22 changer transitions 0/177 dead transitions. [2024-06-03 19:04:24,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 177 transitions, 2030 flow [2024-06-03 19:04:24,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:24,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-03 19:04:24,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-03 19:04:24,379 INFO L175 Difference]: Start difference. First operand has 168 places, 158 transitions, 1588 flow. Second operand 9 states and 111 transitions. [2024-06-03 19:04:24,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 177 transitions, 2030 flow [2024-06-03 19:04:24,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 177 transitions, 1939 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-03 19:04:24,437 INFO L231 Difference]: Finished difference. Result has 170 places, 162 transitions, 1608 flow [2024-06-03 19:04:24,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1608, PETRI_PLACES=170, PETRI_TRANSITIONS=162} [2024-06-03 19:04:24,437 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-03 19:04:24,437 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 162 transitions, 1608 flow [2024-06-03 19:04:24,437 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) [2024-06-03 19:04:24,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:24,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:24,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-03 19:04:24,438 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)] === [2024-06-03 19:04:24,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:24,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1691831304, now seen corresponding path program 2 times [2024-06-03 19:04:24,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:24,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63227036] [2024-06-03 19:04:24,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:24,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:25,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:25,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63227036] [2024-06-03 19:04:25,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63227036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:25,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:25,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:25,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505863555] [2024-06-03 19:04:25,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:25,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:25,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:25,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:25,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:25,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:25,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 162 transitions, 1608 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) [2024-06-03 19:04:25,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:25,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:25,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:25,919 INFO L124 PetriNetUnfolderBase]: 367/675 cut-off events. [2024-06-03 19:04:25,919 INFO L125 PetriNetUnfolderBase]: For 43973/43973 co-relation queries the response was YES. [2024-06-03 19:04:25,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5352 conditions, 675 events. 367/675 cut-off events. For 43973/43973 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3112 event pairs, 29 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 5268. Up to 548 conditions per place. [2024-06-03 19:04:25,925 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 147 selfloop transitions, 36 changer transitions 0/186 dead transitions. [2024-06-03 19:04:25,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 186 transitions, 2404 flow [2024-06-03 19:04:25,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:04:25,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:04:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-03 19:04:25,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-03 19:04:25,926 INFO L175 Difference]: Start difference. First operand has 170 places, 162 transitions, 1608 flow. Second operand 10 states and 129 transitions. [2024-06-03 19:04:25,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 186 transitions, 2404 flow [2024-06-03 19:04:25,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 186 transitions, 2345 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-03 19:04:25,995 INFO L231 Difference]: Finished difference. Result has 174 places, 169 transitions, 1808 flow [2024-06-03 19:04:25,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1808, PETRI_PLACES=174, PETRI_TRANSITIONS=169} [2024-06-03 19:04:25,996 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-03 19:04:25,996 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 169 transitions, 1808 flow [2024-06-03 19:04:25,996 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) [2024-06-03 19:04:25,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:25,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:25,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-03 19:04:25,997 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)] === [2024-06-03 19:04:25,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:25,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1691837814, now seen corresponding path program 3 times [2024-06-03 19:04:25,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:25,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252073131] [2024-06-03 19:04:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:25,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:27,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:27,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252073131] [2024-06-03 19:04:27,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252073131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:27,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:27,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:27,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297125703] [2024-06-03 19:04:27,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:27,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:27,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:27,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:27,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:27,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:27,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 169 transitions, 1808 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) [2024-06-03 19:04:27,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:27,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:27,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:27,570 INFO L124 PetriNetUnfolderBase]: 365/672 cut-off events. [2024-06-03 19:04:27,570 INFO L125 PetriNetUnfolderBase]: For 44694/44694 co-relation queries the response was YES. [2024-06-03 19:04:27,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5340 conditions, 672 events. 365/672 cut-off events. For 44694/44694 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3106 event pairs, 32 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 5255. Up to 566 conditions per place. [2024-06-03 19:04:27,575 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 31 changer transitions 0/185 dead transitions. [2024-06-03 19:04:27,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 185 transitions, 2256 flow [2024-06-03 19:04:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:04:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:04:27,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:04:27,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 19:04:27,576 INFO L175 Difference]: Start difference. First operand has 174 places, 169 transitions, 1808 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:04:27,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 185 transitions, 2256 flow [2024-06-03 19:04:27,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 185 transitions, 2151 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-03 19:04:27,642 INFO L231 Difference]: Finished difference. Result has 179 places, 170 transitions, 1814 flow [2024-06-03 19:04:27,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1814, PETRI_PLACES=179, PETRI_TRANSITIONS=170} [2024-06-03 19:04:27,642 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-03 19:04:27,642 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 170 transitions, 1814 flow [2024-06-03 19:04:27,643 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) [2024-06-03 19:04:27,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:27,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:27,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-03 19:04:27,643 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)] === [2024-06-03 19:04:27,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:27,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1691838062, now seen corresponding path program 1 times [2024-06-03 19:04:27,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:27,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810208508] [2024-06-03 19:04:27,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:27,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:28,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:28,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810208508] [2024-06-03 19:04:28,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810208508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:28,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:28,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:28,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737925301] [2024-06-03 19:04:28,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:28,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:28,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:28,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:28,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:29,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:29,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 170 transitions, 1814 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) [2024-06-03 19:04:29,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:29,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:29,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:29,438 INFO L124 PetriNetUnfolderBase]: 364/671 cut-off events. [2024-06-03 19:04:29,438 INFO L125 PetriNetUnfolderBase]: For 45545/45545 co-relation queries the response was YES. [2024-06-03 19:04:29,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5249 conditions, 671 events. 364/671 cut-off events. For 45545/45545 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3096 event pairs, 30 based on Foata normal form. 3/672 useless extension candidates. Maximal degree in co-relation 5162. Up to 541 conditions per place. [2024-06-03 19:04:29,443 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 149 selfloop transitions, 36 changer transitions 0/188 dead transitions. [2024-06-03 19:04:29,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 188 transitions, 2284 flow [2024-06-03 19:04:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:04:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:04:29,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-03 19:04:29,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-03 19:04:29,444 INFO L175 Difference]: Start difference. First operand has 179 places, 170 transitions, 1814 flow. Second operand 10 states and 126 transitions. [2024-06-03 19:04:29,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 188 transitions, 2284 flow [2024-06-03 19:04:29,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 188 transitions, 2157 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-03 19:04:29,510 INFO L231 Difference]: Finished difference. Result has 181 places, 172 transitions, 1826 flow [2024-06-03 19:04:29,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1826, PETRI_PLACES=181, PETRI_TRANSITIONS=172} [2024-06-03 19:04:29,510 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-03 19:04:29,510 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 172 transitions, 1826 flow [2024-06-03 19:04:29,510 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) [2024-06-03 19:04:29,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:29,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:29,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-03 19:04:29,510 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)] === [2024-06-03 19:04:29,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:29,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1857292498, now seen corresponding path program 4 times [2024-06-03 19:04:29,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:29,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12579463] [2024-06-03 19:04:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:29,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:30,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:30,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12579463] [2024-06-03 19:04:30,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12579463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:30,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:30,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:30,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358764738] [2024-06-03 19:04:30,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:30,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:30,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:30,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:30,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 172 transitions, 1826 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) [2024-06-03 19:04:30,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:30,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:30,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:30,644 INFO L124 PetriNetUnfolderBase]: 368/679 cut-off events. [2024-06-03 19:04:30,644 INFO L125 PetriNetUnfolderBase]: For 45345/45345 co-relation queries the response was YES. [2024-06-03 19:04:30,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5307 conditions, 679 events. 368/679 cut-off events. For 45345/45345 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3156 event pairs, 32 based on Foata normal form. 2/679 useless extension candidates. Maximal degree in co-relation 5219. Up to 581 conditions per place. [2024-06-03 19:04:30,649 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 158 selfloop transitions, 25 changer transitions 0/186 dead transitions. [2024-06-03 19:04:30,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 186 transitions, 2256 flow [2024-06-03 19:04:30,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:30,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:30,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-03 19:04:30,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-03 19:04:30,650 INFO L175 Difference]: Start difference. First operand has 181 places, 172 transitions, 1826 flow. Second operand 9 states and 111 transitions. [2024-06-03 19:04:30,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 186 transitions, 2256 flow [2024-06-03 19:04:30,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 186 transitions, 2127 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-03 19:04:30,720 INFO L231 Difference]: Finished difference. Result has 182 places, 174 transitions, 1787 flow [2024-06-03 19:04:30,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1787, PETRI_PLACES=182, PETRI_TRANSITIONS=174} [2024-06-03 19:04:30,721 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-03 19:04:30,721 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 174 transitions, 1787 flow [2024-06-03 19:04:30,721 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) [2024-06-03 19:04:30,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:30,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:30,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-03 19:04:30,722 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)] === [2024-06-03 19:04:30,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:30,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1857470438, now seen corresponding path program 4 times [2024-06-03 19:04:30,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:30,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378521555] [2024-06-03 19:04:30,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:30,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:31,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:31,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378521555] [2024-06-03 19:04:31,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378521555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:31,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:31,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:31,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801199864] [2024-06-03 19:04:31,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:31,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:31,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:31,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:31,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:31,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:31,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 174 transitions, 1787 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) [2024-06-03 19:04:31,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:31,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:31,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:32,233 INFO L124 PetriNetUnfolderBase]: 386/716 cut-off events. [2024-06-03 19:04:32,233 INFO L125 PetriNetUnfolderBase]: For 51852/51852 co-relation queries the response was YES. [2024-06-03 19:04:32,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5800 conditions, 716 events. 386/716 cut-off events. For 51852/51852 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3401 event pairs, 31 based on Foata normal form. 1/715 useless extension candidates. Maximal degree in co-relation 5711. Up to 577 conditions per place. [2024-06-03 19:04:32,239 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 154 selfloop transitions, 39 changer transitions 0/196 dead transitions. [2024-06-03 19:04:32,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 196 transitions, 2640 flow [2024-06-03 19:04:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:04:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:04:32,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-03 19:04:32,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-03 19:04:32,241 INFO L175 Difference]: Start difference. First operand has 182 places, 174 transitions, 1787 flow. Second operand 10 states and 129 transitions. [2024-06-03 19:04:32,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 196 transitions, 2640 flow [2024-06-03 19:04:32,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 196 transitions, 2549 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-03 19:04:32,318 INFO L231 Difference]: Finished difference. Result has 184 places, 181 transitions, 1985 flow [2024-06-03 19:04:32,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1696, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1985, PETRI_PLACES=184, PETRI_TRANSITIONS=181} [2024-06-03 19:04:32,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-03 19:04:32,318 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 181 transitions, 1985 flow [2024-06-03 19:04:32,318 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) [2024-06-03 19:04:32,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:32,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:32,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-03 19:04:32,318 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)] === [2024-06-03 19:04:32,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:32,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1863733058, now seen corresponding path program 5 times [2024-06-03 19:04:32,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:32,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912528788] [2024-06-03 19:04:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:32,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:33,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:33,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:33,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912528788] [2024-06-03 19:04:33,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912528788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:33,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:33,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:33,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605827917] [2024-06-03 19:04:33,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:33,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:33,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:33,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:33,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:33,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:33,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 181 transitions, 1985 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) [2024-06-03 19:04:33,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:33,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:33,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:33,927 INFO L124 PetriNetUnfolderBase]: 412/766 cut-off events. [2024-06-03 19:04:33,927 INFO L125 PetriNetUnfolderBase]: For 63920/63920 co-relation queries the response was YES. [2024-06-03 19:04:33,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6655 conditions, 766 events. 412/766 cut-off events. For 63920/63920 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3736 event pairs, 33 based on Foata normal form. 2/766 useless extension candidates. Maximal degree in co-relation 6566. Up to 519 conditions per place. [2024-06-03 19:04:33,933 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 61 changer transitions 0/206 dead transitions. [2024-06-03 19:04:33,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 206 transitions, 3030 flow [2024-06-03 19:04:33,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:04:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:04:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-03 19:04:33,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-03 19:04:33,935 INFO L175 Difference]: Start difference. First operand has 184 places, 181 transitions, 1985 flow. Second operand 10 states and 134 transitions. [2024-06-03 19:04:33,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 206 transitions, 3030 flow [2024-06-03 19:04:34,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 206 transitions, 2911 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-03 19:04:34,021 INFO L231 Difference]: Finished difference. Result has 189 places, 188 transitions, 2209 flow [2024-06-03 19:04:34,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2209, PETRI_PLACES=189, PETRI_TRANSITIONS=188} [2024-06-03 19:04:34,021 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-03 19:04:34,021 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 188 transitions, 2209 flow [2024-06-03 19:04:34,021 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) [2024-06-03 19:04:34,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:34,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:34,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-03 19:04:34,021 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)] === [2024-06-03 19:04:34,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1857476948, now seen corresponding path program 6 times [2024-06-03 19:04:34,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:34,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942333787] [2024-06-03 19:04:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:34,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:35,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:35,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942333787] [2024-06-03 19:04:35,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942333787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:35,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:35,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:35,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792716030] [2024-06-03 19:04:35,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:35,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:35,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:35,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:35,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:35,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:35,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 188 transitions, 2209 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) [2024-06-03 19:04:35,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:35,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:35,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:35,614 INFO L124 PetriNetUnfolderBase]: 408/760 cut-off events. [2024-06-03 19:04:35,614 INFO L125 PetriNetUnfolderBase]: For 62848/62848 co-relation queries the response was YES. [2024-06-03 19:04:35,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6585 conditions, 760 events. 408/760 cut-off events. For 62848/62848 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3705 event pairs, 33 based on Foata normal form. 2/760 useless extension candidates. Maximal degree in co-relation 6494. Up to 616 conditions per place. [2024-06-03 19:04:35,621 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 38 changer transitions 0/202 dead transitions. [2024-06-03 19:04:35,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 202 transitions, 2764 flow [2024-06-03 19:04:35,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:04:35,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:04:35,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-03 19:04:35,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-03 19:04:35,622 INFO L175 Difference]: Start difference. First operand has 189 places, 188 transitions, 2209 flow. Second operand 10 states and 127 transitions. [2024-06-03 19:04:35,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 202 transitions, 2764 flow [2024-06-03 19:04:35,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 202 transitions, 2563 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-03 19:04:35,721 INFO L231 Difference]: Finished difference. Result has 194 places, 188 transitions, 2091 flow [2024-06-03 19:04:35,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=184, 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=10, PETRI_FLOW=2091, PETRI_PLACES=194, PETRI_TRANSITIONS=188} [2024-06-03 19:04:35,722 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-03 19:04:35,722 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 188 transitions, 2091 flow [2024-06-03 19:04:35,722 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) [2024-06-03 19:04:35,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:35,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:35,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-03 19:04:35,723 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)] === [2024-06-03 19:04:35,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:35,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1863726548, now seen corresponding path program 7 times [2024-06-03 19:04:35,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:35,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695288303] [2024-06-03 19:04:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:35,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:36,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:36,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695288303] [2024-06-03 19:04:36,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695288303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:36,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:36,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:36,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874293608] [2024-06-03 19:04:36,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:36,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:36,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:36,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:36,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:37,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:37,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 188 transitions, 2091 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) [2024-06-03 19:04:37,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:37,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:37,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:37,445 INFO L124 PetriNetUnfolderBase]: 411/766 cut-off events. [2024-06-03 19:04:37,445 INFO L125 PetriNetUnfolderBase]: For 61072/61072 co-relation queries the response was YES. [2024-06-03 19:04:37,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6509 conditions, 766 events. 411/766 cut-off events. For 61072/61072 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3747 event pairs, 32 based on Foata normal form. 1/765 useless extension candidates. Maximal degree in co-relation 6416. Up to 521 conditions per place. [2024-06-03 19:04:37,451 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 68 changer transitions 0/209 dead transitions. [2024-06-03 19:04:37,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 209 transitions, 3052 flow [2024-06-03 19:04:37,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:04:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:04:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-03 19:04:37,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-03 19:04:37,452 INFO L175 Difference]: Start difference. First operand has 194 places, 188 transitions, 2091 flow. Second operand 10 states and 133 transitions. [2024-06-03 19:04:37,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 209 transitions, 3052 flow [2024-06-03 19:04:37,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 209 transitions, 2982 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-03 19:04:37,571 INFO L231 Difference]: Finished difference. Result has 196 places, 193 transitions, 2314 flow [2024-06-03 19:04:37,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2314, PETRI_PLACES=196, PETRI_TRANSITIONS=193} [2024-06-03 19:04:37,572 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-03 19:04:37,572 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 193 transitions, 2314 flow [2024-06-03 19:04:37,572 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) [2024-06-03 19:04:37,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:37,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:37,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-03 19:04:37,572 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)] === [2024-06-03 19:04:37,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:37,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1863963946, now seen corresponding path program 2 times [2024-06-03 19:04:37,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:37,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944420897] [2024-06-03 19:04:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:37,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:38,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:38,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944420897] [2024-06-03 19:04:38,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944420897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:38,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:38,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:38,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449789254] [2024-06-03 19:04:38,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:38,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:38,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:38,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:38,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:38,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:38,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 193 transitions, 2314 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) [2024-06-03 19:04:38,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:38,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:38,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:38,868 INFO L124 PetriNetUnfolderBase]: 409/762 cut-off events. [2024-06-03 19:04:38,869 INFO L125 PetriNetUnfolderBase]: For 61429/61429 co-relation queries the response was YES. [2024-06-03 19:04:38,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6557 conditions, 762 events. 409/762 cut-off events. For 61429/61429 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3726 event pairs, 33 based on Foata normal form. 1/761 useless extension candidates. Maximal degree in co-relation 6463. Up to 588 conditions per place. [2024-06-03 19:04:38,874 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 50 changer transitions 0/204 dead transitions. [2024-06-03 19:04:38,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 204 transitions, 2744 flow [2024-06-03 19:04:38,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-03 19:04:38,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 19:04:38,876 INFO L175 Difference]: Start difference. First operand has 196 places, 193 transitions, 2314 flow. Second operand 9 states and 117 transitions. [2024-06-03 19:04:38,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 204 transitions, 2744 flow [2024-06-03 19:04:38,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 204 transitions, 2546 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-03 19:04:38,978 INFO L231 Difference]: Finished difference. Result has 199 places, 193 transitions, 2223 flow [2024-06-03 19:04:38,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2223, PETRI_PLACES=199, PETRI_TRANSITIONS=193} [2024-06-03 19:04:38,979 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-03 19:04:38,979 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 193 transitions, 2223 flow [2024-06-03 19:04:38,979 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) [2024-06-03 19:04:38,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:38,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:38,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-03 19:04:38,979 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)] === [2024-06-03 19:04:38,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:38,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1863972626, now seen corresponding path program 1 times [2024-06-03 19:04:38,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:38,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825102679] [2024-06-03 19:04:38,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:38,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:40,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:40,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825102679] [2024-06-03 19:04:40,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825102679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:40,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:40,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:40,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912495777] [2024-06-03 19:04:40,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:40,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:40,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:40,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:40,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:40,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:40,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 193 transitions, 2223 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) [2024-06-03 19:04:40,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:40,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:40,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:41,007 INFO L124 PetriNetUnfolderBase]: 413/770 cut-off events. [2024-06-03 19:04:41,008 INFO L125 PetriNetUnfolderBase]: For 64484/64484 co-relation queries the response was YES. [2024-06-03 19:04:41,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6543 conditions, 770 events. 413/770 cut-off events. For 64484/64484 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3790 event pairs, 31 based on Foata normal form. 2/770 useless extension candidates. Maximal degree in co-relation 6448. Up to 683 conditions per place. [2024-06-03 19:04:41,014 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 188 selfloop transitions, 17 changer transitions 0/208 dead transitions. [2024-06-03 19:04:41,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 208 transitions, 2701 flow [2024-06-03 19:04:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:04:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:04:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 19:04:41,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 19:04:41,015 INFO L175 Difference]: Start difference. First operand has 199 places, 193 transitions, 2223 flow. Second operand 10 states and 118 transitions. [2024-06-03 19:04:41,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 208 transitions, 2701 flow [2024-06-03 19:04:41,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 208 transitions, 2612 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 19:04:41,130 INFO L231 Difference]: Finished difference. Result has 202 places, 194 transitions, 2204 flow [2024-06-03 19:04:41,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2204, PETRI_PLACES=202, PETRI_TRANSITIONS=194} [2024-06-03 19:04:41,130 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-03 19:04:41,130 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 194 transitions, 2204 flow [2024-06-03 19:04:41,130 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) [2024-06-03 19:04:41,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:41,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:41,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-03 19:04:41,131 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)] === [2024-06-03 19:04:41,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:41,131 INFO L85 PathProgramCache]: Analyzing trace with hash -676180780, now seen corresponding path program 8 times [2024-06-03 19:04:41,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:41,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870363575] [2024-06-03 19:04:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:41,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:42,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:42,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870363575] [2024-06-03 19:04:42,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870363575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:42,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:42,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:42,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669826444] [2024-06-03 19:04:42,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:42,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:42,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:42,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:42,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:42,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:42,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 194 transitions, 2204 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) [2024-06-03 19:04:42,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:42,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:42,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:42,572 INFO L124 PetriNetUnfolderBase]: 409/764 cut-off events. [2024-06-03 19:04:42,572 INFO L125 PetriNetUnfolderBase]: For 60986/60986 co-relation queries the response was YES. [2024-06-03 19:04:42,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 764 events. 409/764 cut-off events. For 60986/60986 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3758 event pairs, 32 based on Foata normal form. 2/764 useless extension candidates. Maximal degree in co-relation 6206. Up to 525 conditions per place. [2024-06-03 19:04:42,578 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 68 changer transitions 0/208 dead transitions. [2024-06-03 19:04:42,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 208 transitions, 2892 flow [2024-06-03 19:04:42,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:04:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:04:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-03 19:04:42,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-03 19:04:42,579 INFO L175 Difference]: Start difference. First operand has 202 places, 194 transitions, 2204 flow. Second operand 10 states and 131 transitions. [2024-06-03 19:04:42,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 208 transitions, 2892 flow [2024-06-03 19:04:42,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 208 transitions, 2782 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-03 19:04:42,689 INFO L231 Difference]: Finished difference. Result has 204 places, 194 transitions, 2237 flow [2024-06-03 19:04:42,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2237, PETRI_PLACES=204, PETRI_TRANSITIONS=194} [2024-06-03 19:04:42,689 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-03 19:04:42,689 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 194 transitions, 2237 flow [2024-06-03 19:04:42,689 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) [2024-06-03 19:04:42,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:42,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:42,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-03 19:04:42,690 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)] === [2024-06-03 19:04:42,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:42,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2031835174, now seen corresponding path program 5 times [2024-06-03 19:04:42,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:42,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914802345] [2024-06-03 19:04:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:42,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:43,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:43,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914802345] [2024-06-03 19:04:43,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914802345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:43,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:43,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:43,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408626141] [2024-06-03 19:04:43,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:43,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:43,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:43,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:43,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:43,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:43,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 194 transitions, 2237 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) [2024-06-03 19:04:43,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:43,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:43,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:44,041 INFO L124 PetriNetUnfolderBase]: 406/760 cut-off events. [2024-06-03 19:04:44,041 INFO L125 PetriNetUnfolderBase]: For 58568/58571 co-relation queries the response was YES. [2024-06-03 19:04:44,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6173 conditions, 760 events. 406/760 cut-off events. For 58568/58571 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3740 event pairs, 37 based on Foata normal form. 2/757 useless extension candidates. Maximal degree in co-relation 6076. Up to 633 conditions per place. [2024-06-03 19:04:44,047 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 172 selfloop transitions, 30 changer transitions 0/205 dead transitions. [2024-06-03 19:04:44,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 205 transitions, 2675 flow [2024-06-03 19:04:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:44,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-03 19:04:44,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-03 19:04:44,048 INFO L175 Difference]: Start difference. First operand has 204 places, 194 transitions, 2237 flow. Second operand 9 states and 110 transitions. [2024-06-03 19:04:44,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 205 transitions, 2675 flow [2024-06-03 19:04:44,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 205 transitions, 2557 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-03 19:04:44,169 INFO L231 Difference]: Finished difference. Result has 205 places, 195 transitions, 2193 flow [2024-06-03 19:04:44,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2193, PETRI_PLACES=205, PETRI_TRANSITIONS=195} [2024-06-03 19:04:44,169 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-03 19:04:44,170 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 195 transitions, 2193 flow [2024-06-03 19:04:44,170 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) [2024-06-03 19:04:44,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:44,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:44,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-03 19:04:44,170 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)] === [2024-06-03 19:04:44,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:44,170 INFO L85 PathProgramCache]: Analyzing trace with hash 123032372, now seen corresponding path program 2 times [2024-06-03 19:04:44,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:44,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529671941] [2024-06-03 19:04:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:44,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:45,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:45,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529671941] [2024-06-03 19:04:45,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529671941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:45,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:45,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:45,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809616340] [2024-06-03 19:04:45,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:45,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:45,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:45,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:45,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:45,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:45,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 195 transitions, 2193 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) [2024-06-03 19:04:45,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:45,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:45,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:45,862 INFO L124 PetriNetUnfolderBase]: 410/768 cut-off events. [2024-06-03 19:04:45,862 INFO L125 PetriNetUnfolderBase]: For 60934/60937 co-relation queries the response was YES. [2024-06-03 19:04:45,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6185 conditions, 768 events. 410/768 cut-off events. For 60934/60937 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3781 event pairs, 33 based on Foata normal form. 4/768 useless extension candidates. Maximal degree in co-relation 6087. Up to 674 conditions per place. [2024-06-03 19:04:45,868 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 185 selfloop transitions, 19 changer transitions 0/207 dead transitions. [2024-06-03 19:04:45,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 207 transitions, 2663 flow [2024-06-03 19:04:45,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:45,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 19:04:45,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:04:45,869 INFO L175 Difference]: Start difference. First operand has 205 places, 195 transitions, 2193 flow. Second operand 9 states and 108 transitions. [2024-06-03 19:04:45,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 207 transitions, 2663 flow [2024-06-03 19:04:45,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 207 transitions, 2553 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-03 19:04:45,989 INFO L231 Difference]: Finished difference. Result has 206 places, 196 transitions, 2159 flow [2024-06-03 19:04:45,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2159, PETRI_PLACES=206, PETRI_TRANSITIONS=196} [2024-06-03 19:04:45,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-03 19:04:45,990 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 196 transitions, 2159 flow [2024-06-03 19:04:45,990 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) [2024-06-03 19:04:45,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:45,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:45,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-03 19:04:45,990 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)] === [2024-06-03 19:04:45,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:45,991 INFO L85 PathProgramCache]: Analyzing trace with hash 353019512, now seen corresponding path program 3 times [2024-06-03 19:04:45,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:45,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772751471] [2024-06-03 19:04:45,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:45,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:47,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:47,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772751471] [2024-06-03 19:04:47,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772751471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:47,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:47,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:47,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759257652] [2024-06-03 19:04:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:47,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:47,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:47,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:47,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:47,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:47,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 196 transitions, 2159 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) [2024-06-03 19:04:47,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:47,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:47,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:47,831 INFO L124 PetriNetUnfolderBase]: 421/788 cut-off events. [2024-06-03 19:04:47,831 INFO L125 PetriNetUnfolderBase]: For 67353/67353 co-relation queries the response was YES. [2024-06-03 19:04:47,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6466 conditions, 788 events. 421/788 cut-off events. For 67353/67353 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3915 event pairs, 33 based on Foata normal form. 2/788 useless extension candidates. Maximal degree in co-relation 6367. Up to 686 conditions per place. [2024-06-03 19:04:47,838 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 189 selfloop transitions, 20 changer transitions 0/212 dead transitions. [2024-06-03 19:04:47,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 212 transitions, 2805 flow [2024-06-03 19:04:47,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:04:47,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:04:47,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 19:04:47,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-03 19:04:47,839 INFO L175 Difference]: Start difference. First operand has 206 places, 196 transitions, 2159 flow. Second operand 11 states and 127 transitions. [2024-06-03 19:04:47,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 212 transitions, 2805 flow [2024-06-03 19:04:47,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 212 transitions, 2739 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-03 19:04:47,960 INFO L231 Difference]: Finished difference. Result has 210 places, 198 transitions, 2207 flow [2024-06-03 19:04:47,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2207, PETRI_PLACES=210, PETRI_TRANSITIONS=198} [2024-06-03 19:04:47,961 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-03 19:04:47,961 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 198 transitions, 2207 flow [2024-06-03 19:04:47,961 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) [2024-06-03 19:04:47,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:47,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:47,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-03 19:04:47,962 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)] === [2024-06-03 19:04:47,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:47,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1049698380, now seen corresponding path program 4 times [2024-06-03 19:04:47,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:47,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686915531] [2024-06-03 19:04:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:47,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:49,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:49,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686915531] [2024-06-03 19:04:49,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686915531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:49,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:49,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:49,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808345432] [2024-06-03 19:04:49,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:49,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:49,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:49,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:49,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:49,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:49,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 198 transitions, 2207 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) [2024-06-03 19:04:49,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:49,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:49,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:49,867 INFO L124 PetriNetUnfolderBase]: 425/792 cut-off events. [2024-06-03 19:04:49,867 INFO L125 PetriNetUnfolderBase]: For 69102/69102 co-relation queries the response was YES. [2024-06-03 19:04:49,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6534 conditions, 792 events. 425/792 cut-off events. For 69102/69102 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3926 event pairs, 36 based on Foata normal form. 2/792 useless extension candidates. Maximal degree in co-relation 6434. Up to 713 conditions per place. [2024-06-03 19:04:49,875 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 189 selfloop transitions, 19 changer transitions 0/211 dead transitions. [2024-06-03 19:04:49,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 211 transitions, 2687 flow [2024-06-03 19:04:49,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:04:49,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:04:49,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-03 19:04:49,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-03 19:04:49,876 INFO L175 Difference]: Start difference. First operand has 210 places, 198 transitions, 2207 flow. Second operand 11 states and 126 transitions. [2024-06-03 19:04:49,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 211 transitions, 2687 flow [2024-06-03 19:04:50,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 211 transitions, 2619 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-03 19:04:50,009 INFO L231 Difference]: Finished difference. Result has 214 places, 199 transitions, 2219 flow [2024-06-03 19:04:50,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2219, PETRI_PLACES=214, PETRI_TRANSITIONS=199} [2024-06-03 19:04:50,010 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-03 19:04:50,010 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 199 transitions, 2219 flow [2024-06-03 19:04:50,010 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) [2024-06-03 19:04:50,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:50,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:50,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-03 19:04:50,010 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)] === [2024-06-03 19:04:50,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:50,010 INFO L85 PathProgramCache]: Analyzing trace with hash 122786294, now seen corresponding path program 9 times [2024-06-03 19:04:50,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:50,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126159071] [2024-06-03 19:04:50,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:50,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:51,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:51,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:51,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126159071] [2024-06-03 19:04:51,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126159071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:51,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:51,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:51,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446463621] [2024-06-03 19:04:51,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:51,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:51,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:51,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:51,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:51,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:51,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 199 transitions, 2219 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) [2024-06-03 19:04:51,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:51,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:51,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:51,615 INFO L124 PetriNetUnfolderBase]: 453/846 cut-off events. [2024-06-03 19:04:51,616 INFO L125 PetriNetUnfolderBase]: For 82058/82061 co-relation queries the response was YES. [2024-06-03 19:04:51,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7487 conditions, 846 events. 453/846 cut-off events. For 82058/82061 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4280 event pairs, 40 based on Foata normal form. 1/842 useless extension candidates. Maximal degree in co-relation 7385. Up to 631 conditions per place. [2024-06-03 19:04:51,623 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 165 selfloop transitions, 54 changer transitions 0/222 dead transitions. [2024-06-03 19:04:51,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 222 transitions, 3401 flow [2024-06-03 19:04:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:04:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:04:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-03 19:04:51,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-03 19:04:51,624 INFO L175 Difference]: Start difference. First operand has 214 places, 199 transitions, 2219 flow. Second operand 10 states and 134 transitions. [2024-06-03 19:04:51,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 222 transitions, 3401 flow [2024-06-03 19:04:51,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 222 transitions, 3339 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-03 19:04:51,760 INFO L231 Difference]: Finished difference. Result has 216 places, 208 transitions, 2582 flow [2024-06-03 19:04:51,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2157, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2582, PETRI_PLACES=216, PETRI_TRANSITIONS=208} [2024-06-03 19:04:51,761 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-03 19:04:51,761 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 208 transitions, 2582 flow [2024-06-03 19:04:51,761 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) [2024-06-03 19:04:51,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:51,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:51,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-03 19:04:51,761 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)] === [2024-06-03 19:04:51,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:51,762 INFO L85 PathProgramCache]: Analyzing trace with hash -706738366, now seen corresponding path program 10 times [2024-06-03 19:04:51,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:51,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528805727] [2024-06-03 19:04:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:51,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:52,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:52,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528805727] [2024-06-03 19:04:52,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528805727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:52,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:52,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:52,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510759237] [2024-06-03 19:04:52,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:52,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:52,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:52,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:52,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:52,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:52,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 208 transitions, 2582 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) [2024-06-03 19:04:52,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:52,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:52,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:53,291 INFO L124 PetriNetUnfolderBase]: 464/868 cut-off events. [2024-06-03 19:04:53,291 INFO L125 PetriNetUnfolderBase]: For 90165/90168 co-relation queries the response was YES. [2024-06-03 19:04:53,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7991 conditions, 868 events. 464/868 cut-off events. For 90165/90168 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4438 event pairs, 42 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 7887. Up to 643 conditions per place. [2024-06-03 19:04:53,298 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 55 changer transitions 0/227 dead transitions. [2024-06-03 19:04:53,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 227 transitions, 3659 flow [2024-06-03 19:04:53,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:04:53,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:04:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-03 19:04:53,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-03 19:04:53,299 INFO L175 Difference]: Start difference. First operand has 216 places, 208 transitions, 2582 flow. Second operand 10 states and 135 transitions. [2024-06-03 19:04:53,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 227 transitions, 3659 flow [2024-06-03 19:04:53,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 227 transitions, 3462 flow, removed 81 selfloop flow, removed 4 redundant places. [2024-06-03 19:04:53,455 INFO L231 Difference]: Finished difference. Result has 222 places, 213 transitions, 2673 flow [2024-06-03 19:04:53,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2673, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2024-06-03 19:04:53,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-03 19:04:53,455 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 2673 flow [2024-06-03 19:04:53,456 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) [2024-06-03 19:04:53,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:53,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:53,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-03 19:04:53,456 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)] === [2024-06-03 19:04:53,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:53,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1059817710, now seen corresponding path program 5 times [2024-06-03 19:04:53,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:53,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227997994] [2024-06-03 19:04:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:53,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:54,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:54,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227997994] [2024-06-03 19:04:54,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227997994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:54,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:54,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:54,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079834571] [2024-06-03 19:04:54,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:54,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:54,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:54,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:54,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:54,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:54,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 2673 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) [2024-06-03 19:04:54,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:54,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:54,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:55,002 INFO L124 PetriNetUnfolderBase]: 461/862 cut-off events. [2024-06-03 19:04:55,002 INFO L125 PetriNetUnfolderBase]: For 86568/86568 co-relation queries the response was YES. [2024-06-03 19:04:55,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 862 events. 461/862 cut-off events. For 86568/86568 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4408 event pairs, 37 based on Foata normal form. 2/862 useless extension candidates. Maximal degree in co-relation 7648. Up to 765 conditions per place. [2024-06-03 19:04:55,011 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 202 selfloop transitions, 18 changer transitions 0/223 dead transitions. [2024-06-03 19:04:55,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 223 transitions, 3137 flow [2024-06-03 19:04:55,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:55,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 19:04:55,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-03 19:04:55,012 INFO L175 Difference]: Start difference. First operand has 222 places, 213 transitions, 2673 flow. Second operand 9 states and 107 transitions. [2024-06-03 19:04:55,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 223 transitions, 3137 flow [2024-06-03 19:04:55,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 223 transitions, 2968 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-03 19:04:55,164 INFO L231 Difference]: Finished difference. Result has 225 places, 213 transitions, 2546 flow [2024-06-03 19:04:55,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2504, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2546, PETRI_PLACES=225, PETRI_TRANSITIONS=213} [2024-06-03 19:04:55,165 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-03 19:04:55,165 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 213 transitions, 2546 flow [2024-06-03 19:04:55,165 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) [2024-06-03 19:04:55,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:55,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:55,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-03 19:04:55,165 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)] === [2024-06-03 19:04:55,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:55,166 INFO L85 PathProgramCache]: Analyzing trace with hash -706499108, now seen corresponding path program 3 times [2024-06-03 19:04:55,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:55,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326527278] [2024-06-03 19:04:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:55,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:56,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:56,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326527278] [2024-06-03 19:04:56,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326527278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:56,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:56,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:04:56,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129029781] [2024-06-03 19:04:56,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:56,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:04:56,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:56,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:04:56,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:04:56,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:56,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 213 transitions, 2546 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) [2024-06-03 19:04:56,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:56,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:56,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:56,577 INFO L124 PetriNetUnfolderBase]: 459/860 cut-off events. [2024-06-03 19:04:56,577 INFO L125 PetriNetUnfolderBase]: For 82425/82428 co-relation queries the response was YES. [2024-06-03 19:04:56,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7481 conditions, 860 events. 459/860 cut-off events. For 82425/82428 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4414 event pairs, 40 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 7374. Up to 685 conditions per place. [2024-06-03 19:04:56,586 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 173 selfloop transitions, 47 changer transitions 0/223 dead transitions. [2024-06-03 19:04:56,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 223 transitions, 3148 flow [2024-06-03 19:04:56,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:04:56,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:04:56,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-03 19:04:56,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-03 19:04:56,588 INFO L175 Difference]: Start difference. First operand has 225 places, 213 transitions, 2546 flow. Second operand 9 states and 119 transitions. [2024-06-03 19:04:56,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 223 transitions, 3148 flow [2024-06-03 19:04:56,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 223 transitions, 3088 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-03 19:04:56,774 INFO L231 Difference]: Finished difference. Result has 226 places, 213 transitions, 2589 flow [2024-06-03 19:04:56,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2589, PETRI_PLACES=226, PETRI_TRANSITIONS=213} [2024-06-03 19:04:56,775 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-03 19:04:56,775 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 213 transitions, 2589 flow [2024-06-03 19:04:56,775 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) [2024-06-03 19:04:56,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:56,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:56,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-03 19:04:56,775 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)] === [2024-06-03 19:04:56,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:56,776 INFO L85 PathProgramCache]: Analyzing trace with hash -706507726, now seen corresponding path program 11 times [2024-06-03 19:04:56,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:56,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986470593] [2024-06-03 19:04:56,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:56,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:57,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:57,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986470593] [2024-06-03 19:04:57,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986470593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:57,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:57,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:57,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626781295] [2024-06-03 19:04:57,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:57,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:57,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:57,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:57,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:58,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:58,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 213 transitions, 2589 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) [2024-06-03 19:04:58,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:58,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:58,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:04:58,420 INFO L124 PetriNetUnfolderBase]: 455/856 cut-off events. [2024-06-03 19:04:58,420 INFO L125 PetriNetUnfolderBase]: For 80550/80553 co-relation queries the response was YES. [2024-06-03 19:04:58,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7329 conditions, 856 events. 455/856 cut-off events. For 80550/80553 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4397 event pairs, 39 based on Foata normal form. 2/853 useless extension candidates. Maximal degree in co-relation 7221. Up to 634 conditions per place. [2024-06-03 19:04:58,427 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 166 selfloop transitions, 57 changer transitions 0/226 dead transitions. [2024-06-03 19:04:58,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 226 transitions, 3367 flow [2024-06-03 19:04:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:04:58,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:04:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-03 19:04:58,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-03 19:04:58,427 INFO L175 Difference]: Start difference. First operand has 226 places, 213 transitions, 2589 flow. Second operand 10 states and 132 transitions. [2024-06-03 19:04:58,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 226 transitions, 3367 flow [2024-06-03 19:04:58,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 226 transitions, 3192 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-03 19:04:58,583 INFO L231 Difference]: Finished difference. Result has 228 places, 213 transitions, 2539 flow [2024-06-03 19:04:58,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2539, PETRI_PLACES=228, PETRI_TRANSITIONS=213} [2024-06-03 19:04:58,583 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-03 19:04:58,584 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 213 transitions, 2539 flow [2024-06-03 19:04:58,584 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) [2024-06-03 19:04:58,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:04:58,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:04:58,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-03 19:04:58,584 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)] === [2024-06-03 19:04:58,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:04:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash -712994476, now seen corresponding path program 12 times [2024-06-03 19:04:58,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:04:58,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153305144] [2024-06-03 19:04:58,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:04:58,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:04:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:04:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:04:59,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:04:59,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153305144] [2024-06-03 19:04:59,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153305144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:04:59,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:04:59,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:04:59,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241725658] [2024-06-03 19:04:59,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:04:59,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:04:59,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:04:59,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:04:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:04:59,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:04:59,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 213 transitions, 2539 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) [2024-06-03 19:04:59,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:04:59,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:04:59,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:00,183 INFO L124 PetriNetUnfolderBase]: 462/871 cut-off events. [2024-06-03 19:05:00,183 INFO L125 PetriNetUnfolderBase]: For 81527/81530 co-relation queries the response was YES. [2024-06-03 19:05:00,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7437 conditions, 871 events. 462/871 cut-off events. For 81527/81530 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4507 event pairs, 39 based on Foata normal form. 2/868 useless extension candidates. Maximal degree in co-relation 7329. Up to 696 conditions per place. [2024-06-03 19:05:00,190 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 42 changer transitions 0/228 dead transitions. [2024-06-03 19:05:00,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 228 transitions, 3277 flow [2024-06-03 19:05:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:00,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:00,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-03 19:05:00,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-03 19:05:00,191 INFO L175 Difference]: Start difference. First operand has 228 places, 213 transitions, 2539 flow. Second operand 10 states and 126 transitions. [2024-06-03 19:05:00,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 228 transitions, 3277 flow [2024-06-03 19:05:00,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 228 transitions, 3159 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:00,344 INFO L231 Difference]: Finished difference. Result has 230 places, 216 transitions, 2610 flow [2024-06-03 19:05:00,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2610, PETRI_PLACES=230, PETRI_TRANSITIONS=216} [2024-06-03 19:05:00,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-03 19:05:00,344 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 216 transitions, 2610 flow [2024-06-03 19:05:00,345 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) [2024-06-03 19:05:00,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:00,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:00,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-03 19:05:00,345 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)] === [2024-06-03 19:05:00,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:00,345 INFO L85 PathProgramCache]: Analyzing trace with hash -713000986, now seen corresponding path program 13 times [2024-06-03 19:05:00,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:00,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87480156] [2024-06-03 19:05:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:00,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:01,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:01,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87480156] [2024-06-03 19:05:01,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87480156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:01,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:01,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:01,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264207268] [2024-06-03 19:05:01,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:01,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:01,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:01,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:01,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:01,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:01,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 216 transitions, 2610 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) [2024-06-03 19:05:01,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:01,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:01,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:01,963 INFO L124 PetriNetUnfolderBase]: 460/868 cut-off events. [2024-06-03 19:05:01,963 INFO L125 PetriNetUnfolderBase]: For 79224/79227 co-relation queries the response was YES. [2024-06-03 19:05:01,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7328 conditions, 868 events. 460/868 cut-off events. For 79224/79227 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4487 event pairs, 38 based on Foata normal form. 1/864 useless extension candidates. Maximal degree in co-relation 7219. Up to 695 conditions per place. [2024-06-03 19:05:01,970 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 44 changer transitions 0/229 dead transitions. [2024-06-03 19:05:01,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 229 transitions, 3305 flow [2024-06-03 19:05:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-03 19:05:01,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-03 19:05:01,971 INFO L175 Difference]: Start difference. First operand has 230 places, 216 transitions, 2610 flow. Second operand 10 states and 127 transitions. [2024-06-03 19:05:01,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 229 transitions, 3305 flow [2024-06-03 19:05:02,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 229 transitions, 3116 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-03 19:05:02,118 INFO L231 Difference]: Finished difference. Result has 231 places, 218 transitions, 2593 flow [2024-06-03 19:05:02,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2593, PETRI_PLACES=231, PETRI_TRANSITIONS=218} [2024-06-03 19:05:02,118 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-03 19:05:02,118 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 218 transitions, 2593 flow [2024-06-03 19:05:02,118 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) [2024-06-03 19:05:02,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:02,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:02,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-03 19:05:02,119 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)] === [2024-06-03 19:05:02,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:02,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1059826638, now seen corresponding path program 14 times [2024-06-03 19:05:02,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:02,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536059267] [2024-06-03 19:05:02,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:02,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:03,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:03,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536059267] [2024-06-03 19:05:03,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536059267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:03,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:03,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:03,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209663820] [2024-06-03 19:05:03,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:03,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:03,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:03,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:03,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:03,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:03,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 218 transitions, 2593 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) [2024-06-03 19:05:03,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:03,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:03,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:03,656 INFO L124 PetriNetUnfolderBase]: 471/889 cut-off events. [2024-06-03 19:05:03,657 INFO L125 PetriNetUnfolderBase]: For 85520/85520 co-relation queries the response was YES. [2024-06-03 19:05:03,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7577 conditions, 889 events. 471/889 cut-off events. For 85520/85520 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4639 event pairs, 34 based on Foata normal form. 2/889 useless extension candidates. Maximal degree in co-relation 7467. Up to 775 conditions per place. [2024-06-03 19:05:03,666 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 23 changer transitions 0/235 dead transitions. [2024-06-03 19:05:03,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 235 transitions, 3429 flow [2024-06-03 19:05:03,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:03,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:05:03,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-03 19:05:03,667 INFO L175 Difference]: Start difference. First operand has 231 places, 218 transitions, 2593 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:05:03,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 235 transitions, 3429 flow [2024-06-03 19:05:03,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 235 transitions, 3281 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-03 19:05:03,841 INFO L231 Difference]: Finished difference. Result has 234 places, 223 transitions, 2675 flow [2024-06-03 19:05:03,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2675, PETRI_PLACES=234, PETRI_TRANSITIONS=223} [2024-06-03 19:05:03,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-03 19:05:03,841 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 223 transitions, 2675 flow [2024-06-03 19:05:03,841 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) [2024-06-03 19:05:03,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:03,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:03,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-03 19:05:03,842 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)] === [2024-06-03 19:05:03,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:03,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1344917580, now seen corresponding path program 6 times [2024-06-03 19:05:03,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:03,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363614633] [2024-06-03 19:05:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:03,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:05,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:05,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363614633] [2024-06-03 19:05:05,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363614633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:05,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:05,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:05,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050368973] [2024-06-03 19:05:05,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:05,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:05,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:05,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:05,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:05,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:05,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 223 transitions, 2675 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) [2024-06-03 19:05:05,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:05,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:05,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:05,959 INFO L124 PetriNetUnfolderBase]: 468/885 cut-off events. [2024-06-03 19:05:05,959 INFO L125 PetriNetUnfolderBase]: For 83004/83007 co-relation queries the response was YES. [2024-06-03 19:05:05,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7344 conditions, 885 events. 468/885 cut-off events. For 83004/83007 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4634 event pairs, 32 based on Foata normal form. 4/885 useless extension candidates. Maximal degree in co-relation 7233. Up to 753 conditions per place. [2024-06-03 19:05:05,967 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 202 selfloop transitions, 30 changer transitions 0/235 dead transitions. [2024-06-03 19:05:05,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 235 transitions, 3171 flow [2024-06-03 19:05:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:05:05,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:05:05,967 INFO L175 Difference]: Start difference. First operand has 234 places, 223 transitions, 2675 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:05:05,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 235 transitions, 3171 flow [2024-06-03 19:05:06,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 235 transitions, 3039 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-03 19:05:06,154 INFO L231 Difference]: Finished difference. Result has 238 places, 223 transitions, 2607 flow [2024-06-03 19:05:06,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2607, PETRI_PLACES=238, PETRI_TRANSITIONS=223} [2024-06-03 19:05:06,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-03 19:05:06,154 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 223 transitions, 2607 flow [2024-06-03 19:05:06,154 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) [2024-06-03 19:05:06,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:06,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:06,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-03 19:05:06,155 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)] === [2024-06-03 19:05:06,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:06,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1344926508, now seen corresponding path program 15 times [2024-06-03 19:05:06,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:06,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608612796] [2024-06-03 19:05:06,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:06,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:07,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:07,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608612796] [2024-06-03 19:05:07,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608612796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:07,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:07,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:07,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772526943] [2024-06-03 19:05:07,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:07,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:07,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:07,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:07,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:07,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:07,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 223 transitions, 2607 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) [2024-06-03 19:05:07,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:07,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:07,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:07,832 INFO L124 PetriNetUnfolderBase]: 479/903 cut-off events. [2024-06-03 19:05:07,832 INFO L125 PetriNetUnfolderBase]: For 87357/87360 co-relation queries the response was YES. [2024-06-03 19:05:07,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7630 conditions, 903 events. 479/903 cut-off events. For 87357/87360 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4725 event pairs, 38 based on Foata normal form. 2/900 useless extension candidates. Maximal degree in co-relation 7517. Up to 451 conditions per place. [2024-06-03 19:05:07,839 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 133 selfloop transitions, 111 changer transitions 0/247 dead transitions. [2024-06-03 19:05:07,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 247 transitions, 4069 flow [2024-06-03 19:05:07,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:07,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:07,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-03 19:05:07,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-03 19:05:07,840 INFO L175 Difference]: Start difference. First operand has 238 places, 223 transitions, 2607 flow. Second operand 10 states and 139 transitions. [2024-06-03 19:05:07,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 247 transitions, 4069 flow [2024-06-03 19:05:08,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 247 transitions, 3927 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-03 19:05:08,021 INFO L231 Difference]: Finished difference. Result has 237 places, 230 transitions, 2955 flow [2024-06-03 19:05:08,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2465, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2955, PETRI_PLACES=237, PETRI_TRANSITIONS=230} [2024-06-03 19:05:08,022 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-03 19:05:08,022 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 230 transitions, 2955 flow [2024-06-03 19:05:08,022 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) [2024-06-03 19:05:08,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:08,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:08,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-03 19:05:08,022 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)] === [2024-06-03 19:05:08,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:08,023 INFO L85 PathProgramCache]: Analyzing trace with hash -712994228, now seen corresponding path program 4 times [2024-06-03 19:05:08,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:08,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455318646] [2024-06-03 19:05:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:08,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:09,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:09,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455318646] [2024-06-03 19:05:09,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455318646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:09,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:09,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:09,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478618277] [2024-06-03 19:05:09,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:09,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:09,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:09,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:09,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:09,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:09,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 230 transitions, 2955 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) [2024-06-03 19:05:09,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:09,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:09,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:10,103 INFO L124 PetriNetUnfolderBase]: 474/892 cut-off events. [2024-06-03 19:05:10,103 INFO L125 PetriNetUnfolderBase]: For 84747/84750 co-relation queries the response was YES. [2024-06-03 19:05:10,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 892 events. 474/892 cut-off events. For 84747/84750 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4667 event pairs, 42 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 7450. Up to 721 conditions per place. [2024-06-03 19:05:10,110 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 199 selfloop transitions, 38 changer transitions 0/240 dead transitions. [2024-06-03 19:05:10,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 240 transitions, 3453 flow [2024-06-03 19:05:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-03 19:05:10,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 19:05:10,111 INFO L175 Difference]: Start difference. First operand has 237 places, 230 transitions, 2955 flow. Second operand 10 states and 125 transitions. [2024-06-03 19:05:10,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 240 transitions, 3453 flow [2024-06-03 19:05:10,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 240 transitions, 3043 flow, removed 99 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:10,304 INFO L231 Difference]: Finished difference. Result has 239 places, 230 transitions, 2627 flow [2024-06-03 19:05:10,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2627, PETRI_PLACES=239, PETRI_TRANSITIONS=230} [2024-06-03 19:05:10,305 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-03 19:05:10,305 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 230 transitions, 2627 flow [2024-06-03 19:05:10,305 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) [2024-06-03 19:05:10,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:10,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:10,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-03 19:05:10,305 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)] === [2024-06-03 19:05:10,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:10,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1345163658, now seen corresponding path program 16 times [2024-06-03 19:05:10,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:10,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696213205] [2024-06-03 19:05:10,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:10,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:11,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:11,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696213205] [2024-06-03 19:05:11,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696213205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:11,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:11,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:11,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341255539] [2024-06-03 19:05:11,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:11,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:11,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:11,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:11,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:11,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:11,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 230 transitions, 2627 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) [2024-06-03 19:05:11,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:11,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:11,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:11,962 INFO L124 PetriNetUnfolderBase]: 482/911 cut-off events. [2024-06-03 19:05:11,962 INFO L125 PetriNetUnfolderBase]: For 84024/84027 co-relation queries the response was YES. [2024-06-03 19:05:11,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7354 conditions, 911 events. 482/911 cut-off events. For 84024/84027 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4809 event pairs, 37 based on Foata normal form. 1/907 useless extension candidates. Maximal degree in co-relation 7243. Up to 454 conditions per place. [2024-06-03 19:05:11,969 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 124 selfloop transitions, 122 changer transitions 0/249 dead transitions. [2024-06-03 19:05:11,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 249 transitions, 3809 flow [2024-06-03 19:05:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:11,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-03 19:05:11,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-03 19:05:11,970 INFO L175 Difference]: Start difference. First operand has 239 places, 230 transitions, 2627 flow. Second operand 10 states and 135 transitions. [2024-06-03 19:05:11,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 249 transitions, 3809 flow [2024-06-03 19:05:12,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 249 transitions, 3703 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 19:05:12,136 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 2963 flow [2024-06-03 19:05:12,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2963, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2024-06-03 19:05:12,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-03 19:05:12,136 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 2963 flow [2024-06-03 19:05:12,137 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) [2024-06-03 19:05:12,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:12,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:12,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-03 19:05:12,137 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)] === [2024-06-03 19:05:12,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:12,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1345157148, now seen corresponding path program 17 times [2024-06-03 19:05:12,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:12,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449988712] [2024-06-03 19:05:12,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:12,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:13,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:13,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:13,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449988712] [2024-06-03 19:05:13,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449988712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:13,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:13,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:13,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475467678] [2024-06-03 19:05:13,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:13,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:13,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:13,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:13,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:13,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:13,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 2963 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) [2024-06-03 19:05:13,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:13,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:13,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:13,952 INFO L124 PetriNetUnfolderBase]: 478/905 cut-off events. [2024-06-03 19:05:13,952 INFO L125 PetriNetUnfolderBase]: For 84167/84170 co-relation queries the response was YES. [2024-06-03 19:05:13,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7408 conditions, 905 events. 478/905 cut-off events. For 84167/84170 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4762 event pairs, 37 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 7295. Up to 451 conditions per place. [2024-06-03 19:05:13,960 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 130 selfloop transitions, 117 changer transitions 0/250 dead transitions. [2024-06-03 19:05:13,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 250 transitions, 4023 flow [2024-06-03 19:05:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-03 19:05:13,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-03 19:05:13,961 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 2963 flow. Second operand 10 states and 136 transitions. [2024-06-03 19:05:13,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 250 transitions, 4023 flow [2024-06-03 19:05:14,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 250 transitions, 3668 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-03 19:05:14,160 INFO L231 Difference]: Finished difference. Result has 244 places, 235 transitions, 2848 flow [2024-06-03 19:05:14,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2848, PETRI_PLACES=244, PETRI_TRANSITIONS=235} [2024-06-03 19:05:14,161 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-03 19:05:14,161 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 235 transitions, 2848 flow [2024-06-03 19:05:14,161 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) [2024-06-03 19:05:14,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:14,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:14,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-03 19:05:14,161 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)] === [2024-06-03 19:05:14,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:14,162 INFO L85 PathProgramCache]: Analyzing trace with hash 421021419, now seen corresponding path program 1 times [2024-06-03 19:05:14,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:14,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213076902] [2024-06-03 19:05:14,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:14,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:15,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:15,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213076902] [2024-06-03 19:05:15,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213076902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:15,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:15,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:15,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903402731] [2024-06-03 19:05:15,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:15,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:15,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:15,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:15,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:15,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:15,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 235 transitions, 2848 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) [2024-06-03 19:05:15,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:15,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:15,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:15,638 INFO L124 PetriNetUnfolderBase]: 482/912 cut-off events. [2024-06-03 19:05:15,638 INFO L125 PetriNetUnfolderBase]: For 85764/85764 co-relation queries the response was YES. [2024-06-03 19:05:15,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7343 conditions, 912 events. 482/912 cut-off events. For 85764/85764 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4822 event pairs, 13 based on Foata normal form. 2/912 useless extension candidates. Maximal degree in co-relation 7229. Up to 760 conditions per place. [2024-06-03 19:05:15,645 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 235 selfloop transitions, 19 changer transitions 0/257 dead transitions. [2024-06-03 19:05:15,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 257 transitions, 3442 flow [2024-06-03 19:05:15,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:15,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 19:05:15,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-03 19:05:15,646 INFO L175 Difference]: Start difference. First operand has 244 places, 235 transitions, 2848 flow. Second operand 10 states and 123 transitions. [2024-06-03 19:05:15,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 257 transitions, 3442 flow [2024-06-03 19:05:15,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 257 transitions, 3187 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 19:05:15,850 INFO L231 Difference]: Finished difference. Result has 245 places, 236 transitions, 2665 flow [2024-06-03 19:05:15,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2593, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2665, PETRI_PLACES=245, PETRI_TRANSITIONS=236} [2024-06-03 19:05:15,850 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-03 19:05:15,850 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 236 transitions, 2665 flow [2024-06-03 19:05:15,850 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) [2024-06-03 19:05:15,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:15,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:15,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-03 19:05:15,851 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)] === [2024-06-03 19:05:15,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:15,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1535897479, now seen corresponding path program 2 times [2024-06-03 19:05:15,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:15,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358326424] [2024-06-03 19:05:15,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:15,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:16,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358326424] [2024-06-03 19:05:16,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358326424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:16,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:16,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:16,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933996872] [2024-06-03 19:05:16,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:16,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:16,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:16,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:16,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:16,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:16,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 236 transitions, 2665 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) [2024-06-03 19:05:16,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:16,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:16,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:17,343 INFO L124 PetriNetUnfolderBase]: 486/920 cut-off events. [2024-06-03 19:05:17,343 INFO L125 PetriNetUnfolderBase]: For 87272/87272 co-relation queries the response was YES. [2024-06-03 19:05:17,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7205 conditions, 920 events. 486/920 cut-off events. For 87272/87272 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4877 event pairs, 27 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 7090. Up to 785 conditions per place. [2024-06-03 19:05:17,351 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 234 selfloop transitions, 20 changer transitions 0/257 dead transitions. [2024-06-03 19:05:17,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 257 transitions, 3259 flow [2024-06-03 19:05:17,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:17,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:05:17,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 19:05:17,352 INFO L175 Difference]: Start difference. First operand has 245 places, 236 transitions, 2665 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:05:17,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 257 transitions, 3259 flow [2024-06-03 19:05:17,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 257 transitions, 3197 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:17,571 INFO L231 Difference]: Finished difference. Result has 247 places, 237 transitions, 2679 flow [2024-06-03 19:05:17,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2679, PETRI_PLACES=247, PETRI_TRANSITIONS=237} [2024-06-03 19:05:17,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-03 19:05:17,572 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 237 transitions, 2679 flow [2024-06-03 19:05:17,572 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) [2024-06-03 19:05:17,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:17,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:17,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-03 19:05:17,572 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)] === [2024-06-03 19:05:17,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:17,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1535901199, now seen corresponding path program 3 times [2024-06-03 19:05:17,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:17,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066535823] [2024-06-03 19:05:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:17,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:18,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:18,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066535823] [2024-06-03 19:05:18,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066535823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:18,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:18,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:18,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823875927] [2024-06-03 19:05:18,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:18,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:18,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:18,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:18,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:18,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:18,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 237 transitions, 2679 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) [2024-06-03 19:05:18,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:18,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:18,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:19,037 INFO L124 PetriNetUnfolderBase]: 490/928 cut-off events. [2024-06-03 19:05:19,038 INFO L125 PetriNetUnfolderBase]: For 91214/91214 co-relation queries the response was YES. [2024-06-03 19:05:19,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7269 conditions, 928 events. 490/928 cut-off events. For 91214/91214 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4954 event pairs, 29 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 7153. Up to 798 conditions per place. [2024-06-03 19:05:19,044 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 233 selfloop transitions, 21 changer transitions 0/257 dead transitions. [2024-06-03 19:05:19,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 257 transitions, 3273 flow [2024-06-03 19:05:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:05:19,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 19:05:19,045 INFO L175 Difference]: Start difference. First operand has 247 places, 237 transitions, 2679 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:05:19,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 257 transitions, 3273 flow [2024-06-03 19:05:19,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 257 transitions, 3207 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:19,253 INFO L231 Difference]: Finished difference. Result has 249 places, 238 transitions, 2693 flow [2024-06-03 19:05:19,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2693, PETRI_PLACES=249, PETRI_TRANSITIONS=238} [2024-06-03 19:05:19,254 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-03 19:05:19,254 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 238 transitions, 2693 flow [2024-06-03 19:05:19,254 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) [2024-06-03 19:05:19,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:19,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:19,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-03 19:05:19,254 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)] === [2024-06-03 19:05:19,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:19,254 INFO L85 PathProgramCache]: Analyzing trace with hash 907158513, now seen corresponding path program 4 times [2024-06-03 19:05:19,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:19,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988751684] [2024-06-03 19:05:19,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:19,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:20,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:20,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988751684] [2024-06-03 19:05:20,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988751684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:20,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:20,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:20,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016591111] [2024-06-03 19:05:20,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:20,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:20,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:20,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:20,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:20,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:20,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 238 transitions, 2693 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) [2024-06-03 19:05:20,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:20,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:20,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:20,808 INFO L124 PetriNetUnfolderBase]: 494/936 cut-off events. [2024-06-03 19:05:20,808 INFO L125 PetriNetUnfolderBase]: For 93535/93535 co-relation queries the response was YES. [2024-06-03 19:05:20,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7333 conditions, 936 events. 494/936 cut-off events. For 93535/93535 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5005 event pairs, 29 based on Foata normal form. 2/936 useless extension candidates. Maximal degree in co-relation 7216. Up to 800 conditions per place. [2024-06-03 19:05:20,817 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 26 changer transitions 0/255 dead transitions. [2024-06-03 19:05:20,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 255 transitions, 3275 flow [2024-06-03 19:05:20,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:20,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 19:05:20,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-03 19:05:20,818 INFO L175 Difference]: Start difference. First operand has 249 places, 238 transitions, 2693 flow. Second operand 10 states and 123 transitions. [2024-06-03 19:05:20,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 255 transitions, 3275 flow [2024-06-03 19:05:21,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 255 transitions, 3205 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:21,052 INFO L231 Difference]: Finished difference. Result has 251 places, 239 transitions, 2715 flow [2024-06-03 19:05:21,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2715, PETRI_PLACES=251, PETRI_TRANSITIONS=239} [2024-06-03 19:05:21,053 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-03 19:05:21,053 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 239 transitions, 2715 flow [2024-06-03 19:05:21,053 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) [2024-06-03 19:05:21,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:21,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:21,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-03 19:05:21,053 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)] === [2024-06-03 19:05:21,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:21,054 INFO L85 PathProgramCache]: Analyzing trace with hash 901796133, now seen corresponding path program 5 times [2024-06-03 19:05:21,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:21,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640851974] [2024-06-03 19:05:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:22,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:22,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640851974] [2024-06-03 19:05:22,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640851974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:22,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:22,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:22,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846481657] [2024-06-03 19:05:22,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:22,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:22,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:22,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:22,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:22,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:22,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 239 transitions, 2715 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) [2024-06-03 19:05:22,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:22,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:22,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:22,740 INFO L124 PetriNetUnfolderBase]: 498/944 cut-off events. [2024-06-03 19:05:22,740 INFO L125 PetriNetUnfolderBase]: For 95781/95781 co-relation queries the response was YES. [2024-06-03 19:05:22,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7404 conditions, 944 events. 498/944 cut-off events. For 95781/95781 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5066 event pairs, 31 based on Foata normal form. 2/944 useless extension candidates. Maximal degree in co-relation 7286. Up to 816 conditions per place. [2024-06-03 19:05:22,749 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 230 selfloop transitions, 24 changer transitions 0/257 dead transitions. [2024-06-03 19:05:22,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 257 transitions, 3316 flow [2024-06-03 19:05:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:05:22,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-03 19:05:22,750 INFO L175 Difference]: Start difference. First operand has 251 places, 239 transitions, 2715 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:05:22,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 257 transitions, 3316 flow [2024-06-03 19:05:22,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 257 transitions, 3232 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:22,979 INFO L231 Difference]: Finished difference. Result has 254 places, 241 transitions, 2740 flow [2024-06-03 19:05:22,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2633, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2740, PETRI_PLACES=254, PETRI_TRANSITIONS=241} [2024-06-03 19:05:22,980 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-03 19:05:22,980 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 241 transitions, 2740 flow [2024-06-03 19:05:22,980 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) [2024-06-03 19:05:22,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:22,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:22,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-03 19:05:22,981 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)] === [2024-06-03 19:05:22,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:22,981 INFO L85 PathProgramCache]: Analyzing trace with hash 901648263, now seen corresponding path program 6 times [2024-06-03 19:05:22,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:22,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352076580] [2024-06-03 19:05:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:22,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:24,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:24,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352076580] [2024-06-03 19:05:24,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352076580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:24,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:24,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:24,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239979740] [2024-06-03 19:05:24,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:24,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:24,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:24,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:24,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:24,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 241 transitions, 2740 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) [2024-06-03 19:05:24,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:24,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:24,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:24,649 INFO L124 PetriNetUnfolderBase]: 502/952 cut-off events. [2024-06-03 19:05:24,649 INFO L125 PetriNetUnfolderBase]: For 98151/98151 co-relation queries the response was YES. [2024-06-03 19:05:24,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7469 conditions, 952 events. 502/952 cut-off events. For 98151/98151 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5139 event pairs, 29 based on Foata normal form. 2/952 useless extension candidates. Maximal degree in co-relation 7349. Up to 819 conditions per place. [2024-06-03 19:05:24,658 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 233 selfloop transitions, 23 changer transitions 0/259 dead transitions. [2024-06-03 19:05:24,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 259 transitions, 3336 flow [2024-06-03 19:05:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:05:24,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-03 19:05:24,658 INFO L175 Difference]: Start difference. First operand has 254 places, 241 transitions, 2740 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:05:24,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 259 transitions, 3336 flow [2024-06-03 19:05:24,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 259 transitions, 3260 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-03 19:05:24,896 INFO L231 Difference]: Finished difference. Result has 257 places, 242 transitions, 2754 flow [2024-06-03 19:05:24,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2664, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2754, PETRI_PLACES=257, PETRI_TRANSITIONS=242} [2024-06-03 19:05:24,896 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-03 19:05:24,896 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 242 transitions, 2754 flow [2024-06-03 19:05:24,896 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) [2024-06-03 19:05:24,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:24,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:24,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-03 19:05:24,897 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)] === [2024-06-03 19:05:24,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:24,897 INFO L85 PathProgramCache]: Analyzing trace with hash 907164465, now seen corresponding path program 1 times [2024-06-03 19:05:24,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:24,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188956215] [2024-06-03 19:05:24,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:24,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:26,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:26,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188956215] [2024-06-03 19:05:26,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188956215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:26,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:26,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:05:26,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821716656] [2024-06-03 19:05:26,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:26,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:05:26,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:26,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:05:26,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:05:26,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:26,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 242 transitions, 2754 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) [2024-06-03 19:05:26,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:26,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:26,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:27,372 INFO L124 PetriNetUnfolderBase]: 505/957 cut-off events. [2024-06-03 19:05:27,373 INFO L125 PetriNetUnfolderBase]: For 96801/96801 co-relation queries the response was YES. [2024-06-03 19:05:27,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 957 events. 505/957 cut-off events. For 96801/96801 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5157 event pairs, 31 based on Foata normal form. 1/956 useless extension candidates. Maximal degree in co-relation 7386. Up to 771 conditions per place. [2024-06-03 19:05:27,381 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 44 changer transitions 0/263 dead transitions. [2024-06-03 19:05:27,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 263 transitions, 3714 flow [2024-06-03 19:05:27,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:05:27,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:05:27,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-03 19:05:27,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-03 19:05:27,382 INFO L175 Difference]: Start difference. First operand has 257 places, 242 transitions, 2754 flow. Second operand 11 states and 140 transitions. [2024-06-03 19:05:27,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 263 transitions, 3714 flow [2024-06-03 19:05:27,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 263 transitions, 3634 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:27,638 INFO L231 Difference]: Finished difference. Result has 260 places, 244 transitions, 2823 flow [2024-06-03 19:05:27,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2823, PETRI_PLACES=260, PETRI_TRANSITIONS=244} [2024-06-03 19:05:27,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-03 19:05:27,639 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 244 transitions, 2823 flow [2024-06-03 19:05:27,639 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) [2024-06-03 19:05:27,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:27,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:27,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-03 19:05:27,639 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)] === [2024-06-03 19:05:27,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:27,640 INFO L85 PathProgramCache]: Analyzing trace with hash 907366275, now seen corresponding path program 2 times [2024-06-03 19:05:27,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:27,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846604796] [2024-06-03 19:05:27,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:27,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:29,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846604796] [2024-06-03 19:05:29,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846604796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:29,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:29,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:05:29,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724156418] [2024-06-03 19:05:29,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:29,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:05:29,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:29,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:05:29,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:05:29,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:29,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 244 transitions, 2823 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) [2024-06-03 19:05:29,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:29,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:29,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:29,781 INFO L124 PetriNetUnfolderBase]: 501/951 cut-off events. [2024-06-03 19:05:29,781 INFO L125 PetriNetUnfolderBase]: For 94959/94959 co-relation queries the response was YES. [2024-06-03 19:05:29,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 951 events. 501/951 cut-off events. For 94959/94959 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5140 event pairs, 31 based on Foata normal form. 2/951 useless extension candidates. Maximal degree in co-relation 7150. Up to 794 conditions per place. [2024-06-03 19:05:29,790 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 39 changer transitions 0/260 dead transitions. [2024-06-03 19:05:29,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 260 transitions, 3381 flow [2024-06-03 19:05:29,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:05:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:05:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-03 19:05:29,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-03 19:05:29,791 INFO L175 Difference]: Start difference. First operand has 260 places, 244 transitions, 2823 flow. Second operand 11 states and 137 transitions. [2024-06-03 19:05:29,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 260 transitions, 3381 flow [2024-06-03 19:05:30,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 260 transitions, 3203 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:30,020 INFO L231 Difference]: Finished difference. Result has 264 places, 244 transitions, 2736 flow [2024-06-03 19:05:30,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2736, PETRI_PLACES=264, PETRI_TRANSITIONS=244} [2024-06-03 19:05:30,021 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-03 19:05:30,021 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 244 transitions, 2736 flow [2024-06-03 19:05:30,021 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) [2024-06-03 19:05:30,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:30,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:30,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-03 19:05:30,021 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)] === [2024-06-03 19:05:30,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:30,021 INFO L85 PathProgramCache]: Analyzing trace with hash 888939968, now seen corresponding path program 1 times [2024-06-03 19:05:30,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:30,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681484258] [2024-06-03 19:05:30,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:30,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:31,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:31,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:31,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681484258] [2024-06-03 19:05:31,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681484258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:31,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:31,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:31,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783581005] [2024-06-03 19:05:31,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:31,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:31,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:31,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:31,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:31,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:31,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 244 transitions, 2736 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) [2024-06-03 19:05:31,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:31,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:31,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:31,543 INFO L124 PetriNetUnfolderBase]: 521/995 cut-off events. [2024-06-03 19:05:31,543 INFO L125 PetriNetUnfolderBase]: For 134387/134387 co-relation queries the response was YES. [2024-06-03 19:05:31,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7542 conditions, 995 events. 521/995 cut-off events. For 134387/134387 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5452 event pairs, 35 based on Foata normal form. 12/1005 useless extension candidates. Maximal degree in co-relation 7418. Up to 808 conditions per place. [2024-06-03 19:05:31,553 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 27 changer transitions 7/265 dead transitions. [2024-06-03 19:05:31,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 265 transitions, 3428 flow [2024-06-03 19:05:31,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:31,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-03 19:05:31,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-03 19:05:31,554 INFO L175 Difference]: Start difference. First operand has 264 places, 244 transitions, 2736 flow. Second operand 10 states and 129 transitions. [2024-06-03 19:05:31,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 265 transitions, 3428 flow [2024-06-03 19:05:31,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 265 transitions, 3294 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-03 19:05:31,837 INFO L231 Difference]: Finished difference. Result has 264 places, 242 transitions, 2639 flow [2024-06-03 19:05:31,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2602, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2639, PETRI_PLACES=264, PETRI_TRANSITIONS=242} [2024-06-03 19:05:31,837 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-03 19:05:31,837 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 242 transitions, 2639 flow [2024-06-03 19:05:31,837 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) [2024-06-03 19:05:31,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:31,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:31,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-03 19:05:31,838 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)] === [2024-06-03 19:05:31,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:31,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1747004371, now seen corresponding path program 7 times [2024-06-03 19:05:31,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:31,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147601348] [2024-06-03 19:05:31,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:31,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:33,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:33,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147601348] [2024-06-03 19:05:33,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147601348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:33,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:33,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:33,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301264405] [2024-06-03 19:05:33,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:33,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:33,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:33,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:33,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 242 transitions, 2639 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) [2024-06-03 19:05:33,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:33,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:33,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:33,538 INFO L124 PetriNetUnfolderBase]: 501/955 cut-off events. [2024-06-03 19:05:33,538 INFO L125 PetriNetUnfolderBase]: For 98670/98670 co-relation queries the response was YES. [2024-06-03 19:05:33,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7237 conditions, 955 events. 501/955 cut-off events. For 98670/98670 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5195 event pairs, 33 based on Foata normal form. 2/955 useless extension candidates. Maximal degree in co-relation 7112. Up to 812 conditions per place. [2024-06-03 19:05:33,547 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 224 selfloop transitions, 29 changer transitions 0/256 dead transitions. [2024-06-03 19:05:33,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 256 transitions, 3217 flow [2024-06-03 19:05:33,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 19:05:33,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-03 19:05:33,548 INFO L175 Difference]: Start difference. First operand has 264 places, 242 transitions, 2639 flow. Second operand 10 states and 123 transitions. [2024-06-03 19:05:33,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 256 transitions, 3217 flow [2024-06-03 19:05:33,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 256 transitions, 3089 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-03 19:05:33,806 INFO L231 Difference]: Finished difference. Result has 263 places, 243 transitions, 2615 flow [2024-06-03 19:05:33,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2615, PETRI_PLACES=263, PETRI_TRANSITIONS=243} [2024-06-03 19:05:33,806 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-03 19:05:33,806 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 243 transitions, 2615 flow [2024-06-03 19:05:33,806 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) [2024-06-03 19:05:33,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:33,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:33,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-03 19:05:33,807 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)] === [2024-06-03 19:05:33,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1741641991, now seen corresponding path program 8 times [2024-06-03 19:05:33,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:33,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078922902] [2024-06-03 19:05:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:33,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:34,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:34,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078922902] [2024-06-03 19:05:34,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078922902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:34,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:34,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:34,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456201338] [2024-06-03 19:05:34,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:34,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:34,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:34,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:34,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:34,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:34,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 243 transitions, 2615 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) [2024-06-03 19:05:34,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:34,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:34,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:35,383 INFO L124 PetriNetUnfolderBase]: 505/963 cut-off events. [2024-06-03 19:05:35,383 INFO L125 PetriNetUnfolderBase]: For 101442/101442 co-relation queries the response was YES. [2024-06-03 19:05:35,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7301 conditions, 963 events. 505/963 cut-off events. For 101442/101442 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5253 event pairs, 33 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 7175. Up to 826 conditions per place. [2024-06-03 19:05:35,392 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 228 selfloop transitions, 27 changer transitions 0/258 dead transitions. [2024-06-03 19:05:35,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 258 transitions, 3211 flow [2024-06-03 19:05:35,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:35,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:05:35,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-03 19:05:35,393 INFO L175 Difference]: Start difference. First operand has 263 places, 243 transitions, 2615 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:05:35,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 258 transitions, 3211 flow [2024-06-03 19:05:35,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 258 transitions, 3115 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:35,617 INFO L231 Difference]: Finished difference. Result has 266 places, 245 transitions, 2638 flow [2024-06-03 19:05:35,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2638, PETRI_PLACES=266, PETRI_TRANSITIONS=245} [2024-06-03 19:05:35,618 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-03 19:05:35,618 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 245 transitions, 2638 flow [2024-06-03 19:05:35,618 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) [2024-06-03 19:05:35,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:35,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:35,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-03 19:05:35,618 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)] === [2024-06-03 19:05:35,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:35,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2054738575, now seen corresponding path program 9 times [2024-06-03 19:05:35,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:35,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795014210] [2024-06-03 19:05:35,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:35,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:36,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:36,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795014210] [2024-06-03 19:05:36,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795014210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:36,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:36,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:36,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563383324] [2024-06-03 19:05:36,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:36,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:36,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:36,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:36,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:36,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:36,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 245 transitions, 2638 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) [2024-06-03 19:05:36,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:36,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:36,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:37,305 INFO L124 PetriNetUnfolderBase]: 509/971 cut-off events. [2024-06-03 19:05:37,305 INFO L125 PetriNetUnfolderBase]: For 103711/103711 co-relation queries the response was YES. [2024-06-03 19:05:37,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7362 conditions, 971 events. 509/971 cut-off events. For 103711/103711 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5329 event pairs, 35 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 7234. Up to 806 conditions per place. [2024-06-03 19:05:37,315 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 218 selfloop transitions, 38 changer transitions 0/259 dead transitions. [2024-06-03 19:05:37,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 259 transitions, 3226 flow [2024-06-03 19:05:37,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 19:05:37,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-03 19:05:37,315 INFO L175 Difference]: Start difference. First operand has 266 places, 245 transitions, 2638 flow. Second operand 10 states and 123 transitions. [2024-06-03 19:05:37,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 259 transitions, 3226 flow [2024-06-03 19:05:37,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 259 transitions, 3137 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-03 19:05:37,583 INFO L231 Difference]: Finished difference. Result has 269 places, 246 transitions, 2675 flow [2024-06-03 19:05:37,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2549, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2675, PETRI_PLACES=269, PETRI_TRANSITIONS=246} [2024-06-03 19:05:37,584 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-03 19:05:37,584 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 246 transitions, 2675 flow [2024-06-03 19:05:37,584 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) [2024-06-03 19:05:37,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:37,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:37,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-03 19:05:37,584 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)] === [2024-06-03 19:05:37,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:37,584 INFO L85 PathProgramCache]: Analyzing trace with hash -427806397, now seen corresponding path program 10 times [2024-06-03 19:05:37,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:37,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118456819] [2024-06-03 19:05:37,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:37,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:38,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:38,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118456819] [2024-06-03 19:05:38,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118456819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:38,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:38,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:38,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108163635] [2024-06-03 19:05:38,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:38,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:38,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:38,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:38,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:38,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:38,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 246 transitions, 2675 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) [2024-06-03 19:05:38,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:38,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:38,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:39,150 INFO L124 PetriNetUnfolderBase]: 513/979 cut-off events. [2024-06-03 19:05:39,150 INFO L125 PetriNetUnfolderBase]: For 106174/106174 co-relation queries the response was YES. [2024-06-03 19:05:39,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7446 conditions, 979 events. 513/979 cut-off events. For 106174/106174 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5378 event pairs, 33 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 7317. Up to 837 conditions per place. [2024-06-03 19:05:39,159 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 232 selfloop transitions, 26 changer transitions 0/261 dead transitions. [2024-06-03 19:05:39,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 261 transitions, 3271 flow [2024-06-03 19:05:39,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:05:39,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-03 19:05:39,160 INFO L175 Difference]: Start difference. First operand has 269 places, 246 transitions, 2675 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:05:39,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 261 transitions, 3271 flow [2024-06-03 19:05:39,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 261 transitions, 3155 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:39,446 INFO L231 Difference]: Finished difference. Result has 271 places, 247 transitions, 2663 flow [2024-06-03 19:05:39,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2663, PETRI_PLACES=271, PETRI_TRANSITIONS=247} [2024-06-03 19:05:39,446 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-03 19:05:39,446 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 247 transitions, 2663 flow [2024-06-03 19:05:39,446 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) [2024-06-03 19:05:39,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:39,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:39,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-03 19:05:39,447 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)] === [2024-06-03 19:05:39,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:39,447 INFO L85 PathProgramCache]: Analyzing trace with hash -228350785, now seen corresponding path program 3 times [2024-06-03 19:05:39,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:39,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577126868] [2024-06-03 19:05:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:39,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:41,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:41,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577126868] [2024-06-03 19:05:41,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577126868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:41,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:41,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:05:41,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149778824] [2024-06-03 19:05:41,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:41,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:05:41,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:41,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:05:41,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:05:41,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:41,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 247 transitions, 2663 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) [2024-06-03 19:05:41,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:41,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:41,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:42,044 INFO L124 PetriNetUnfolderBase]: 516/984 cut-off events. [2024-06-03 19:05:42,044 INFO L125 PetriNetUnfolderBase]: For 103865/103865 co-relation queries the response was YES. [2024-06-03 19:05:42,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7438 conditions, 984 events. 516/984 cut-off events. For 103865/103865 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5422 event pairs, 35 based on Foata normal form. 1/983 useless extension candidates. Maximal degree in co-relation 7308. Up to 759 conditions per place. [2024-06-03 19:05:42,054 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 59 changer transitions 0/267 dead transitions. [2024-06-03 19:05:42,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 267 transitions, 3310 flow [2024-06-03 19:05:42,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:05:42,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:05:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-03 19:05:42,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-03 19:05:42,055 INFO L175 Difference]: Start difference. First operand has 271 places, 247 transitions, 2663 flow. Second operand 11 states and 137 transitions. [2024-06-03 19:05:42,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 267 transitions, 3310 flow [2024-06-03 19:05:42,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 267 transitions, 3216 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:42,350 INFO L231 Difference]: Finished difference. Result has 276 places, 253 transitions, 2823 flow [2024-06-03 19:05:42,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2569, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2823, PETRI_PLACES=276, PETRI_TRANSITIONS=253} [2024-06-03 19:05:42,350 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-03 19:05:42,350 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 253 transitions, 2823 flow [2024-06-03 19:05:42,350 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) [2024-06-03 19:05:42,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:42,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:42,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-03 19:05:42,351 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)] === [2024-06-03 19:05:42,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:42,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2046295263, now seen corresponding path program 4 times [2024-06-03 19:05:42,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:42,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726229255] [2024-06-03 19:05:42,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:42,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:44,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:44,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726229255] [2024-06-03 19:05:44,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726229255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:44,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:44,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:05:44,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111375814] [2024-06-03 19:05:44,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:44,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:05:44,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:44,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:05:44,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:05:44,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:44,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 253 transitions, 2823 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) [2024-06-03 19:05:44,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:44,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:44,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:44,780 INFO L124 PetriNetUnfolderBase]: 519/989 cut-off events. [2024-06-03 19:05:44,780 INFO L125 PetriNetUnfolderBase]: For 105657/105657 co-relation queries the response was YES. [2024-06-03 19:05:44,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7582 conditions, 989 events. 519/989 cut-off events. For 105657/105657 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5445 event pairs, 35 based on Foata normal form. 1/988 useless extension candidates. Maximal degree in co-relation 7449. Up to 837 conditions per place. [2024-06-03 19:05:44,790 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 36 changer transitions 0/268 dead transitions. [2024-06-03 19:05:44,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 268 transitions, 3445 flow [2024-06-03 19:05:44,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:05:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:05:44,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 19:05:44,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 19:05:44,791 INFO L175 Difference]: Start difference. First operand has 276 places, 253 transitions, 2823 flow. Second operand 11 states and 135 transitions. [2024-06-03 19:05:44,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 268 transitions, 3445 flow [2024-06-03 19:05:45,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 268 transitions, 3325 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-03 19:05:45,054 INFO L231 Difference]: Finished difference. Result has 281 places, 255 transitions, 2844 flow [2024-06-03 19:05:45,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2703, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2844, PETRI_PLACES=281, PETRI_TRANSITIONS=255} [2024-06-03 19:05:45,054 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-03 19:05:45,055 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 255 transitions, 2844 flow [2024-06-03 19:05:45,055 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) [2024-06-03 19:05:45,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:45,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:45,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-03 19:05:45,055 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)] === [2024-06-03 19:05:45,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:45,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1747219852, now seen corresponding path program 2 times [2024-06-03 19:05:45,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:45,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090371219] [2024-06-03 19:05:45,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:45,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:46,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:46,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:46,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090371219] [2024-06-03 19:05:46,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090371219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:46,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:46,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:46,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114029910] [2024-06-03 19:05:46,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:46,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:46,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:46,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:46,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:46,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:46,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 255 transitions, 2844 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) [2024-06-03 19:05:46,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:46,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:46,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:46,658 INFO L124 PetriNetUnfolderBase]: 539/1033 cut-off events. [2024-06-03 19:05:46,659 INFO L125 PetriNetUnfolderBase]: For 153023/153023 co-relation queries the response was YES. [2024-06-03 19:05:46,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7870 conditions, 1033 events. 539/1033 cut-off events. For 153023/153023 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5751 event pairs, 39 based on Foata normal form. 12/1043 useless extension candidates. Maximal degree in co-relation 7736. Up to 839 conditions per place. [2024-06-03 19:05:46,671 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 233 selfloop transitions, 30 changer transitions 7/273 dead transitions. [2024-06-03 19:05:46,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 273 transitions, 3542 flow [2024-06-03 19:05:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-03 19:05:46,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-03 19:05:46,672 INFO L175 Difference]: Start difference. First operand has 281 places, 255 transitions, 2844 flow. Second operand 10 states and 129 transitions. [2024-06-03 19:05:46,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 273 transitions, 3542 flow [2024-06-03 19:05:47,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 273 transitions, 3401 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:47,017 INFO L231 Difference]: Finished difference. Result has 283 places, 253 transitions, 2747 flow [2024-06-03 19:05:47,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2703, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2747, PETRI_PLACES=283, PETRI_TRANSITIONS=253} [2024-06-03 19:05:47,018 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-03 19:05:47,018 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 253 transitions, 2747 flow [2024-06-03 19:05:47,018 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) [2024-06-03 19:05:47,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:47,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:47,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-03 19:05:47,018 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)] === [2024-06-03 19:05:47,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:47,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1747212133, now seen corresponding path program 5 times [2024-06-03 19:05:47,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:47,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89636127] [2024-06-03 19:05:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:47,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:48,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:48,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89636127] [2024-06-03 19:05:48,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89636127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:48,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:48,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:05:48,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227848667] [2024-06-03 19:05:48,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:48,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:05:48,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:48,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:05:48,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:05:48,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:48,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 253 transitions, 2747 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) [2024-06-03 19:05:48,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:48,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:48,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:49,174 INFO L124 PetriNetUnfolderBase]: 513/982 cut-off events. [2024-06-03 19:05:49,174 INFO L125 PetriNetUnfolderBase]: For 105134/105134 co-relation queries the response was YES. [2024-06-03 19:05:49,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7344 conditions, 982 events. 513/982 cut-off events. For 105134/105134 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5412 event pairs, 35 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 7209. Up to 833 conditions per place. [2024-06-03 19:05:49,183 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 228 selfloop transitions, 35 changer transitions 0/266 dead transitions. [2024-06-03 19:05:49,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 266 transitions, 3305 flow [2024-06-03 19:05:49,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:05:49,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:05:49,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-03 19:05:49,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-03 19:05:49,185 INFO L175 Difference]: Start difference. First operand has 283 places, 253 transitions, 2747 flow. Second operand 11 states and 134 transitions. [2024-06-03 19:05:49,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 266 transitions, 3305 flow [2024-06-03 19:05:49,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 266 transitions, 3189 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:49,484 INFO L231 Difference]: Finished difference. Result has 286 places, 253 transitions, 2706 flow [2024-06-03 19:05:49,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2631, PETRI_DIFFERENCE_MINUEND_PLACES=275, 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=11, PETRI_FLOW=2706, PETRI_PLACES=286, PETRI_TRANSITIONS=253} [2024-06-03 19:05:49,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-03 19:05:49,485 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 253 transitions, 2706 flow [2024-06-03 19:05:49,485 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) [2024-06-03 19:05:49,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:49,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:49,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-03 19:05:49,486 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)] === [2024-06-03 19:05:49,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:49,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1941159262, now seen corresponding path program 3 times [2024-06-03 19:05:49,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:49,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145425] [2024-06-03 19:05:49,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:49,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:50,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:50,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145425] [2024-06-03 19:05:50,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:50,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:50,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:50,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856114137] [2024-06-03 19:05:50,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:50,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:50,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:50,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:50,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:50,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:50,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 253 transitions, 2706 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) [2024-06-03 19:05:50,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:50,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:50,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:51,061 INFO L124 PetriNetUnfolderBase]: 517/990 cut-off events. [2024-06-03 19:05:51,061 INFO L125 PetriNetUnfolderBase]: For 111235/111235 co-relation queries the response was YES. [2024-06-03 19:05:51,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7361 conditions, 990 events. 517/990 cut-off events. For 111235/111235 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5474 event pairs, 37 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 7225. Up to 802 conditions per place. [2024-06-03 19:05:51,071 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 219 selfloop transitions, 45 changer transitions 0/267 dead transitions. [2024-06-03 19:05:51,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 267 transitions, 3288 flow [2024-06-03 19:05:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:05:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:05:51,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-03 19:05:51,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 19:05:51,072 INFO L175 Difference]: Start difference. First operand has 286 places, 253 transitions, 2706 flow. Second operand 10 states and 128 transitions. [2024-06-03 19:05:51,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 267 transitions, 3288 flow [2024-06-03 19:05:51,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 267 transitions, 3188 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-03 19:05:51,441 INFO L231 Difference]: Finished difference. Result has 286 places, 254 transitions, 2724 flow [2024-06-03 19:05:51,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2606, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2724, PETRI_PLACES=286, PETRI_TRANSITIONS=254} [2024-06-03 19:05:51,441 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-03 19:05:51,441 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 254 transitions, 2724 flow [2024-06-03 19:05:51,441 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) [2024-06-03 19:05:51,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:51,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:51,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-03 19:05:51,441 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)] === [2024-06-03 19:05:51,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:51,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1941151543, now seen corresponding path program 6 times [2024-06-03 19:05:51,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:51,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380600437] [2024-06-03 19:05:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:51,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:53,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:53,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380600437] [2024-06-03 19:05:53,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380600437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:53,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:53,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:05:53,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746593446] [2024-06-03 19:05:53,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:53,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:05:53,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:53,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:05:53,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:05:53,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:53,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 254 transitions, 2724 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) [2024-06-03 19:05:53,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:53,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:53,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:54,093 INFO L124 PetriNetUnfolderBase]: 515/987 cut-off events. [2024-06-03 19:05:54,093 INFO L125 PetriNetUnfolderBase]: For 104649/104649 co-relation queries the response was YES. [2024-06-03 19:05:54,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7265 conditions, 987 events. 515/987 cut-off events. For 104649/104649 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5452 event pairs, 35 based on Foata normal form. 1/986 useless extension candidates. Maximal degree in co-relation 7128. Up to 714 conditions per place. [2024-06-03 19:05:54,103 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 192 selfloop transitions, 74 changer transitions 0/269 dead transitions. [2024-06-03 19:05:54,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 269 transitions, 3484 flow [2024-06-03 19:05:54,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:05:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:05:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-03 19:05:54,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 19:05:54,104 INFO L175 Difference]: Start difference. First operand has 286 places, 254 transitions, 2724 flow. Second operand 11 states and 143 transitions. [2024-06-03 19:05:54,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 269 transitions, 3484 flow [2024-06-03 19:05:54,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 269 transitions, 3334 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:54,415 INFO L231 Difference]: Finished difference. Result has 289 places, 254 transitions, 2727 flow [2024-06-03 19:05:54,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2727, PETRI_PLACES=289, PETRI_TRANSITIONS=254} [2024-06-03 19:05:54,416 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-03 19:05:54,416 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 254 transitions, 2727 flow [2024-06-03 19:05:54,416 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) [2024-06-03 19:05:54,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:54,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:54,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-03 19:05:54,416 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)] === [2024-06-03 19:05:54,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:54,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1948309102, now seen corresponding path program 4 times [2024-06-03 19:05:54,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:54,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757665111] [2024-06-03 19:05:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:54,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:55,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:55,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757665111] [2024-06-03 19:05:55,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757665111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:55,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:55,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:05:55,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976662822] [2024-06-03 19:05:55,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:55,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:05:55,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:55,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:05:55,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:05:55,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:55,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 254 transitions, 2727 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) [2024-06-03 19:05:55,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:55,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:55,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:56,194 INFO L124 PetriNetUnfolderBase]: 522/1000 cut-off events. [2024-06-03 19:05:56,195 INFO L125 PetriNetUnfolderBase]: For 111042/111042 co-relation queries the response was YES. [2024-06-03 19:05:56,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7355 conditions, 1000 events. 522/1000 cut-off events. For 111042/111042 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5565 event pairs, 37 based on Foata normal form. 2/1000 useless extension candidates. Maximal degree in co-relation 7217. Up to 826 conditions per place. [2024-06-03 19:05:56,205 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 44 changer transitions 0/271 dead transitions. [2024-06-03 19:05:56,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 271 transitions, 3343 flow [2024-06-03 19:05:56,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:05:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:05:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-03 19:05:56,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-03 19:05:56,206 INFO L175 Difference]: Start difference. First operand has 289 places, 254 transitions, 2727 flow. Second operand 11 states and 134 transitions. [2024-06-03 19:05:56,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 271 transitions, 3343 flow [2024-06-03 19:05:56,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 271 transitions, 3158 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:05:56,536 INFO L231 Difference]: Finished difference. Result has 290 places, 257 transitions, 2689 flow [2024-06-03 19:05:56,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2689, PETRI_PLACES=290, PETRI_TRANSITIONS=257} [2024-06-03 19:05:56,536 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-03 19:05:56,537 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 257 transitions, 2689 flow [2024-06-03 19:05:56,537 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) [2024-06-03 19:05:56,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:56,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:56,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-03 19:05:56,537 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)] === [2024-06-03 19:05:56,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:56,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1948577872, now seen corresponding path program 5 times [2024-06-03 19:05:56,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:56,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313994658] [2024-06-03 19:05:56,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:56,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:57,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:57,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313994658] [2024-06-03 19:05:57,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313994658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:57,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:57,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:05:57,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701825645] [2024-06-03 19:05:57,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:57,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:05:57,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:57,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:05:57,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:05:57,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:57,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 257 transitions, 2689 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) [2024-06-03 19:05:57,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:57,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:57,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:05:58,298 INFO L124 PetriNetUnfolderBase]: 533/1021 cut-off events. [2024-06-03 19:05:58,298 INFO L125 PetriNetUnfolderBase]: For 122924/122924 co-relation queries the response was YES. [2024-06-03 19:05:58,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7670 conditions, 1021 events. 533/1021 cut-off events. For 122924/122924 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5712 event pairs, 38 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 7530. Up to 791 conditions per place. [2024-06-03 19:05:58,306 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 58 changer transitions 0/275 dead transitions. [2024-06-03 19:05:58,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 275 transitions, 3517 flow [2024-06-03 19:05:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:05:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:05:58,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-03 19:05:58,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-03 19:05:58,307 INFO L175 Difference]: Start difference. First operand has 290 places, 257 transitions, 2689 flow. Second operand 11 states and 137 transitions. [2024-06-03 19:05:58,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 275 transitions, 3517 flow [2024-06-03 19:05:58,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 275 transitions, 3410 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-03 19:05:58,653 INFO L231 Difference]: Finished difference. Result has 293 places, 259 transitions, 2756 flow [2024-06-03 19:05:58,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2756, PETRI_PLACES=293, PETRI_TRANSITIONS=259} [2024-06-03 19:05:58,654 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-03 19:05:58,654 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 259 transitions, 2756 flow [2024-06-03 19:05:58,654 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) [2024-06-03 19:05:58,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:05:58,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:05:58,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-03 19:05:58,655 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)] === [2024-06-03 19:05:58,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:05:58,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1948568572, now seen corresponding path program 6 times [2024-06-03 19:05:58,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:05:58,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448064746] [2024-06-03 19:05:58,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:05:58,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:05:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:05:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:05:59,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:05:59,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448064746] [2024-06-03 19:05:59,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448064746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:05:59,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:05:59,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:05:59,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134388664] [2024-06-03 19:05:59,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:05:59,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:05:59,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:05:59,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:05:59,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:05:59,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:05:59,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 259 transitions, 2756 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) [2024-06-03 19:05:59,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:05:59,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:05:59,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:00,255 INFO L124 PetriNetUnfolderBase]: 530/1016 cut-off events. [2024-06-03 19:06:00,255 INFO L125 PetriNetUnfolderBase]: For 115672/115672 co-relation queries the response was YES. [2024-06-03 19:06:00,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7472 conditions, 1016 events. 530/1016 cut-off events. For 115672/115672 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5687 event pairs, 39 based on Foata normal form. 2/1016 useless extension candidates. Maximal degree in co-relation 7331. Up to 821 conditions per place. [2024-06-03 19:06:00,265 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 219 selfloop transitions, 50 changer transitions 0/272 dead transitions. [2024-06-03 19:06:00,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 272 transitions, 3326 flow [2024-06-03 19:06:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:06:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:06:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-03 19:06:00,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-03 19:06:00,268 INFO L175 Difference]: Start difference. First operand has 293 places, 259 transitions, 2756 flow. Second operand 10 states and 126 transitions. [2024-06-03 19:06:00,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 272 transitions, 3326 flow [2024-06-03 19:06:00,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 272 transitions, 3207 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-03 19:06:00,570 INFO L231 Difference]: Finished difference. Result has 295 places, 259 transitions, 2743 flow [2024-06-03 19:06:00,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2637, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2743, PETRI_PLACES=295, PETRI_TRANSITIONS=259} [2024-06-03 19:06:00,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-03 19:06:00,571 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 259 transitions, 2743 flow [2024-06-03 19:06:00,571 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) [2024-06-03 19:06:00,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:00,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:00,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-03 19:06:00,571 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)] === [2024-06-03 19:06:00,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:00,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1948301383, now seen corresponding path program 7 times [2024-06-03 19:06:00,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:00,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42247446] [2024-06-03 19:06:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:00,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:01,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:01,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42247446] [2024-06-03 19:06:01,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42247446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:01,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:01,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:01,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601116272] [2024-06-03 19:06:01,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:01,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:01,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:01,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:01,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:01,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:01,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 259 transitions, 2743 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) [2024-06-03 19:06:01,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:01,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:01,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:02,453 INFO L124 PetriNetUnfolderBase]: 528/1013 cut-off events. [2024-06-03 19:06:02,453 INFO L125 PetriNetUnfolderBase]: For 107618/107618 co-relation queries the response was YES. [2024-06-03 19:06:02,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7335 conditions, 1013 events. 528/1013 cut-off events. For 107618/107618 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5673 event pairs, 39 based on Foata normal form. 1/1012 useless extension candidates. Maximal degree in co-relation 7194. Up to 815 conditions per place. [2024-06-03 19:06:02,461 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 212 selfloop transitions, 57 changer transitions 0/272 dead transitions. [2024-06-03 19:06:02,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 272 transitions, 3313 flow [2024-06-03 19:06:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:02,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 19:06:02,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 19:06:02,463 INFO L175 Difference]: Start difference. First operand has 295 places, 259 transitions, 2743 flow. Second operand 11 states and 135 transitions. [2024-06-03 19:06:02,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 272 transitions, 3313 flow [2024-06-03 19:06:02,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 272 transitions, 3157 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-03 19:06:02,747 INFO L231 Difference]: Finished difference. Result has 297 places, 259 transitions, 2706 flow [2024-06-03 19:06:02,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2587, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2706, PETRI_PLACES=297, PETRI_TRANSITIONS=259} [2024-06-03 19:06:02,747 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-03 19:06:02,747 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 259 transitions, 2706 flow [2024-06-03 19:06:02,747 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) [2024-06-03 19:06:02,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:02,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:02,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-03 19:06:02,748 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)] === [2024-06-03 19:06:02,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:02,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1249595203, now seen corresponding path program 11 times [2024-06-03 19:06:02,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:02,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159407436] [2024-06-03 19:06:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:02,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:03,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:03,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159407436] [2024-06-03 19:06:03,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159407436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:03,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:03,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:06:03,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834826567] [2024-06-03 19:06:03,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:03,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:06:03,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:03,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:06:03,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:06:04,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:04,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 259 transitions, 2706 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) [2024-06-03 19:06:04,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:04,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:04,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:04,468 INFO L124 PetriNetUnfolderBase]: 532/1022 cut-off events. [2024-06-03 19:06:04,469 INFO L125 PetriNetUnfolderBase]: For 115417/115420 co-relation queries the response was YES. [2024-06-03 19:06:04,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7417 conditions, 1022 events. 532/1022 cut-off events. For 115417/115420 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5728 event pairs, 45 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 7275. Up to 814 conditions per place. [2024-06-03 19:06:04,479 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 213 selfloop transitions, 55 changer transitions 0/271 dead transitions. [2024-06-03 19:06:04,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 271 transitions, 3316 flow [2024-06-03 19:06:04,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:06:04,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:06:04,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 19:06:04,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-03 19:06:04,480 INFO L175 Difference]: Start difference. First operand has 297 places, 259 transitions, 2706 flow. Second operand 10 states and 123 transitions. [2024-06-03 19:06:04,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 271 transitions, 3316 flow [2024-06-03 19:06:04,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 271 transitions, 3220 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-03 19:06:04,801 INFO L231 Difference]: Finished difference. Result has 299 places, 260 transitions, 2774 flow [2024-06-03 19:06:04,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2774, PETRI_PLACES=299, PETRI_TRANSITIONS=260} [2024-06-03 19:06:04,802 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-03 19:06:04,802 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 260 transitions, 2774 flow [2024-06-03 19:06:04,802 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) [2024-06-03 19:06:04,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:04,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:04,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-03 19:06:04,802 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)] === [2024-06-03 19:06:04,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:04,803 INFO L85 PathProgramCache]: Analyzing trace with hash -434259035, now seen corresponding path program 12 times [2024-06-03 19:06:04,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:04,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656124908] [2024-06-03 19:06:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:04,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:05,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:05,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656124908] [2024-06-03 19:06:05,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656124908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:05,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:05,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:06:05,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236446202] [2024-06-03 19:06:05,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:05,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:06:05,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:05,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:06:05,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:06:06,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:06,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 260 transitions, 2774 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) [2024-06-03 19:06:06,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:06,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:06,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:06,504 INFO L124 PetriNetUnfolderBase]: 536/1030 cut-off events. [2024-06-03 19:06:06,504 INFO L125 PetriNetUnfolderBase]: For 118944/118947 co-relation queries the response was YES. [2024-06-03 19:06:06,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7567 conditions, 1030 events. 536/1030 cut-off events. For 118944/118947 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5789 event pairs, 43 based on Foata normal form. 2/1027 useless extension candidates. Maximal degree in co-relation 7424. Up to 865 conditions per place. [2024-06-03 19:06:06,514 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 231 selfloop transitions, 38 changer transitions 0/272 dead transitions. [2024-06-03 19:06:06,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 272 transitions, 3388 flow [2024-06-03 19:06:06,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:06:06,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:06:06,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:06:06,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 19:06:06,514 INFO L175 Difference]: Start difference. First operand has 299 places, 260 transitions, 2774 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:06:06,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 272 transitions, 3388 flow [2024-06-03 19:06:06,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 272 transitions, 3234 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-03 19:06:06,809 INFO L231 Difference]: Finished difference. Result has 301 places, 261 transitions, 2752 flow [2024-06-03 19:06:06,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2620, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2752, PETRI_PLACES=301, PETRI_TRANSITIONS=261} [2024-06-03 19:06:06,809 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-03 19:06:06,809 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 261 transitions, 2752 flow [2024-06-03 19:06:06,810 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) [2024-06-03 19:06:06,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:06,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:06,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-03 19:06:06,810 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)] === [2024-06-03 19:06:06,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:06,810 INFO L85 PathProgramCache]: Analyzing trace with hash -633560825, now seen corresponding path program 13 times [2024-06-03 19:06:06,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:06,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249719885] [2024-06-03 19:06:06,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:06,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:08,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:08,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249719885] [2024-06-03 19:06:08,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249719885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:08,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:08,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:06:08,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319760644] [2024-06-03 19:06:08,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:08,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:06:08,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:08,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:06:08,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:06:08,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:08,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 261 transitions, 2752 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) [2024-06-03 19:06:08,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:08,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:08,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:08,534 INFO L124 PetriNetUnfolderBase]: 540/1038 cut-off events. [2024-06-03 19:06:08,534 INFO L125 PetriNetUnfolderBase]: For 121104/121107 co-relation queries the response was YES. [2024-06-03 19:06:08,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7590 conditions, 1038 events. 540/1038 cut-off events. For 121104/121107 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5853 event pairs, 47 based on Foata normal form. 2/1035 useless extension candidates. Maximal degree in co-relation 7446. Up to 888 conditions per place. [2024-06-03 19:06:08,545 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 239 selfloop transitions, 32 changer transitions 0/274 dead transitions. [2024-06-03 19:06:08,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 274 transitions, 3385 flow [2024-06-03 19:06:08,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:06:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:06:08,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:06:08,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:06:08,546 INFO L175 Difference]: Start difference. First operand has 301 places, 261 transitions, 2752 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:06:08,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 274 transitions, 3385 flow [2024-06-03 19:06:08,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 274 transitions, 3261 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-03 19:06:08,868 INFO L231 Difference]: Finished difference. Result has 304 places, 263 transitions, 2768 flow [2024-06-03 19:06:08,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2630, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2768, PETRI_PLACES=304, PETRI_TRANSITIONS=263} [2024-06-03 19:06:08,869 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-03 19:06:08,869 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 263 transitions, 2768 flow [2024-06-03 19:06:08,869 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) [2024-06-03 19:06:08,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:08,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:08,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-03 19:06:08,869 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)] === [2024-06-03 19:06:08,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:08,870 INFO L85 PathProgramCache]: Analyzing trace with hash -633708695, now seen corresponding path program 14 times [2024-06-03 19:06:08,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:08,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219075005] [2024-06-03 19:06:08,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:08,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:10,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:10,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219075005] [2024-06-03 19:06:10,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219075005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:10,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:10,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:06:10,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784130393] [2024-06-03 19:06:10,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:10,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:06:10,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:10,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:06:10,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:06:10,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:10,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 263 transitions, 2768 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) [2024-06-03 19:06:10,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:10,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:10,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:10,628 INFO L124 PetriNetUnfolderBase]: 544/1046 cut-off events. [2024-06-03 19:06:10,628 INFO L125 PetriNetUnfolderBase]: For 123745/123748 co-relation queries the response was YES. [2024-06-03 19:06:10,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7640 conditions, 1046 events. 544/1046 cut-off events. For 123745/123748 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5910 event pairs, 43 based on Foata normal form. 2/1043 useless extension candidates. Maximal degree in co-relation 7494. Up to 891 conditions per place. [2024-06-03 19:06:10,639 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 242 selfloop transitions, 31 changer transitions 0/276 dead transitions. [2024-06-03 19:06:10,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 276 transitions, 3396 flow [2024-06-03 19:06:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:06:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:06:10,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:06:10,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:06:10,640 INFO L175 Difference]: Start difference. First operand has 304 places, 263 transitions, 2768 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:06:10,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 276 transitions, 3396 flow [2024-06-03 19:06:11,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 276 transitions, 3287 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-03 19:06:11,008 INFO L231 Difference]: Finished difference. Result has 307 places, 264 transitions, 2781 flow [2024-06-03 19:06:11,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2659, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2781, PETRI_PLACES=307, PETRI_TRANSITIONS=264} [2024-06-03 19:06:11,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-03 19:06:11,009 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 264 transitions, 2781 flow [2024-06-03 19:06:11,009 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) [2024-06-03 19:06:11,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:11,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:11,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-03 19:06:11,009 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)] === [2024-06-03 19:06:11,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:11,009 INFO L85 PathProgramCache]: Analyzing trace with hash -628198445, now seen corresponding path program 15 times [2024-06-03 19:06:11,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:11,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065970551] [2024-06-03 19:06:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:11,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:12,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:12,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065970551] [2024-06-03 19:06:12,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065970551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:12,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:12,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:06:12,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140714802] [2024-06-03 19:06:12,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:12,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:06:12,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:12,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:06:12,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:06:12,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:12,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 264 transitions, 2781 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) [2024-06-03 19:06:12,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:12,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:12,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:12,788 INFO L124 PetriNetUnfolderBase]: 541/1041 cut-off events. [2024-06-03 19:06:12,789 INFO L125 PetriNetUnfolderBase]: For 114046/114049 co-relation queries the response was YES. [2024-06-03 19:06:12,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7303 conditions, 1041 events. 541/1041 cut-off events. For 114046/114049 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5887 event pairs, 46 based on Foata normal form. 2/1038 useless extension candidates. Maximal degree in co-relation 7156. Up to 885 conditions per place. [2024-06-03 19:06:12,799 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 237 selfloop transitions, 35 changer transitions 0/275 dead transitions. [2024-06-03 19:06:12,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 275 transitions, 3351 flow [2024-06-03 19:06:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:06:12,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:06:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-03 19:06:12,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-03 19:06:12,800 INFO L175 Difference]: Start difference. First operand has 307 places, 264 transitions, 2781 flow. Second operand 10 states and 122 transitions. [2024-06-03 19:06:12,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 275 transitions, 3351 flow [2024-06-03 19:06:13,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 275 transitions, 3239 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-03 19:06:13,181 INFO L231 Difference]: Finished difference. Result has 309 places, 264 transitions, 2743 flow [2024-06-03 19:06:13,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2669, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2743, PETRI_PLACES=309, PETRI_TRANSITIONS=264} [2024-06-03 19:06:13,181 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-03 19:06:13,181 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 264 transitions, 2743 flow [2024-06-03 19:06:13,182 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) [2024-06-03 19:06:13,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:13,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:13,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-03 19:06:13,182 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)] === [2024-06-03 19:06:13,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:13,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1505390672, now seen corresponding path program 7 times [2024-06-03 19:06:13,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:13,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506816013] [2024-06-03 19:06:13,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:13,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:14,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:14,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:14,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506816013] [2024-06-03 19:06:14,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506816013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:14,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:14,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:06:14,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143328565] [2024-06-03 19:06:14,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:14,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:06:14,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:14,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:06:14,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:06:14,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:14,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 264 transitions, 2743 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) [2024-06-03 19:06:14,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:14,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:14,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:14,923 INFO L124 PetriNetUnfolderBase]: 552/1061 cut-off events. [2024-06-03 19:06:14,923 INFO L125 PetriNetUnfolderBase]: For 126428/126428 co-relation queries the response was YES. [2024-06-03 19:06:14,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7613 conditions, 1061 events. 552/1061 cut-off events. For 126428/126428 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6032 event pairs, 43 based on Foata normal form. 2/1061 useless extension candidates. Maximal degree in co-relation 7465. Up to 921 conditions per place. [2024-06-03 19:06:14,934 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 19 changer transitions 0/280 dead transitions. [2024-06-03 19:06:14,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 280 transitions, 3633 flow [2024-06-03 19:06:14,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:06:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:06:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:06:14,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:06:14,934 INFO L175 Difference]: Start difference. First operand has 309 places, 264 transitions, 2743 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:06:14,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 280 transitions, 3633 flow [2024-06-03 19:06:15,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 280 transitions, 3433 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-03 19:06:15,294 INFO L231 Difference]: Finished difference. Result has 309 places, 266 transitions, 2644 flow [2024-06-03 19:06:15,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2644, PETRI_PLACES=309, PETRI_TRANSITIONS=266} [2024-06-03 19:06:15,294 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-03 19:06:15,294 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 266 transitions, 2644 flow [2024-06-03 19:06:15,294 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) [2024-06-03 19:06:15,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:15,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:15,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-03 19:06:15,294 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)] === [2024-06-03 19:06:15,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1505381372, now seen corresponding path program 8 times [2024-06-03 19:06:15,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:15,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936502530] [2024-06-03 19:06:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:15,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:16,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:16,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936502530] [2024-06-03 19:06:16,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936502530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:16,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:16,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:16,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974589884] [2024-06-03 19:06:16,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:16,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:16,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:16,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:16,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:17,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:17,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 266 transitions, 2644 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) [2024-06-03 19:06:17,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:17,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:17,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:17,430 INFO L124 PetriNetUnfolderBase]: 562/1079 cut-off events. [2024-06-03 19:06:17,431 INFO L125 PetriNetUnfolderBase]: For 127663/127663 co-relation queries the response was YES. [2024-06-03 19:06:17,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7538 conditions, 1079 events. 562/1079 cut-off events. For 127663/127663 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6112 event pairs, 45 based on Foata normal form. 2/1079 useless extension candidates. Maximal degree in co-relation 7390. Up to 973 conditions per place. [2024-06-03 19:06:17,440 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 262 selfloop transitions, 20 changer transitions 0/285 dead transitions. [2024-06-03 19:06:17,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 285 transitions, 3368 flow [2024-06-03 19:06:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:17,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 19:06:17,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-03 19:06:17,441 INFO L175 Difference]: Start difference. First operand has 309 places, 266 transitions, 2644 flow. Second operand 11 states and 127 transitions. [2024-06-03 19:06:17,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 285 transitions, 3368 flow [2024-06-03 19:06:17,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 285 transitions, 3281 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-03 19:06:17,826 INFO L231 Difference]: Finished difference. Result has 314 places, 273 transitions, 2745 flow [2024-06-03 19:06:17,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2566, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2745, PETRI_PLACES=314, PETRI_TRANSITIONS=273} [2024-06-03 19:06:17,826 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-03 19:06:17,826 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 273 transitions, 2745 flow [2024-06-03 19:06:17,826 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) [2024-06-03 19:06:17,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:17,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:17,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-03 19:06:17,826 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)] === [2024-06-03 19:06:17,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:17,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1505114183, now seen corresponding path program 8 times [2024-06-03 19:06:17,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:17,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577500661] [2024-06-03 19:06:17,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:17,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:19,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:19,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577500661] [2024-06-03 19:06:19,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577500661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:19,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:19,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:19,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026192628] [2024-06-03 19:06:19,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:19,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:19,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:19,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:19,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:19,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:19,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 273 transitions, 2745 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) [2024-06-03 19:06:19,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:19,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:19,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:20,022 INFO L124 PetriNetUnfolderBase]: 560/1076 cut-off events. [2024-06-03 19:06:20,022 INFO L125 PetriNetUnfolderBase]: For 118184/118184 co-relation queries the response was YES. [2024-06-03 19:06:20,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7349 conditions, 1076 events. 560/1076 cut-off events. For 118184/118184 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6099 event pairs, 45 based on Foata normal form. 1/1075 useless extension candidates. Maximal degree in co-relation 7199. Up to 979 conditions per place. [2024-06-03 19:06:20,038 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 264 selfloop transitions, 18 changer transitions 0/285 dead transitions. [2024-06-03 19:06:20,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 285 transitions, 3341 flow [2024-06-03 19:06:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:20,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 19:06:20,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-03 19:06:20,039 INFO L175 Difference]: Start difference. First operand has 314 places, 273 transitions, 2745 flow. Second operand 11 states and 125 transitions. [2024-06-03 19:06:20,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 285 transitions, 3341 flow [2024-06-03 19:06:20,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 285 transitions, 3225 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-03 19:06:20,408 INFO L231 Difference]: Finished difference. Result has 321 places, 274 transitions, 2681 flow [2024-06-03 19:06:20,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2681, PETRI_PLACES=321, PETRI_TRANSITIONS=274} [2024-06-03 19:06:20,409 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-03 19:06:20,409 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 274 transitions, 2681 flow [2024-06-03 19:06:20,409 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) [2024-06-03 19:06:20,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:20,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:20,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-03 19:06:20,409 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)] === [2024-06-03 19:06:20,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:20,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1505121902, now seen corresponding path program 9 times [2024-06-03 19:06:20,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:20,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154358238] [2024-06-03 19:06:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:20,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:21,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:21,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154358238] [2024-06-03 19:06:21,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154358238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:21,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:21,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:06:21,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062071550] [2024-06-03 19:06:21,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:21,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:06:21,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:21,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:06:21,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:06:21,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:21,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 274 transitions, 2681 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) [2024-06-03 19:06:21,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:21,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:21,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:22,062 INFO L124 PetriNetUnfolderBase]: 557/1071 cut-off events. [2024-06-03 19:06:22,062 INFO L125 PetriNetUnfolderBase]: For 113598/113598 co-relation queries the response was YES. [2024-06-03 19:06:22,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7034 conditions, 1071 events. 557/1071 cut-off events. For 113598/113598 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6087 event pairs, 42 based on Foata normal form. 2/1071 useless extension candidates. Maximal degree in co-relation 6881. Up to 948 conditions per place. [2024-06-03 19:06:22,076 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 257 selfloop transitions, 25 changer transitions 0/285 dead transitions. [2024-06-03 19:06:22,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 285 transitions, 3271 flow [2024-06-03 19:06:22,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:06:22,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:06:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 19:06:22,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 19:06:22,077 INFO L175 Difference]: Start difference. First operand has 321 places, 274 transitions, 2681 flow. Second operand 10 states and 118 transitions. [2024-06-03 19:06:22,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 285 transitions, 3271 flow [2024-06-03 19:06:22,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 285 transitions, 3187 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-03 19:06:22,377 INFO L231 Difference]: Finished difference. Result has 322 places, 274 transitions, 2654 flow [2024-06-03 19:06:22,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2597, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2654, PETRI_PLACES=322, PETRI_TRANSITIONS=274} [2024-06-03 19:06:22,378 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-03 19:06:22,378 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 274 transitions, 2654 flow [2024-06-03 19:06:22,378 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) [2024-06-03 19:06:22,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:22,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:22,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-03 19:06:22,378 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)] === [2024-06-03 19:06:22,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:22,379 INFO L85 PathProgramCache]: Analyzing trace with hash -434051273, now seen corresponding path program 9 times [2024-06-03 19:06:22,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:22,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570388359] [2024-06-03 19:06:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:22,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:23,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:23,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570388359] [2024-06-03 19:06:23,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570388359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:23,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:23,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:23,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344847385] [2024-06-03 19:06:23,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:23,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:23,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:23,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:23,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:24,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:24,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 274 transitions, 2654 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) [2024-06-03 19:06:24,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:24,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:24,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:24,401 INFO L124 PetriNetUnfolderBase]: 560/1077 cut-off events. [2024-06-03 19:06:24,402 INFO L125 PetriNetUnfolderBase]: For 109548/109551 co-relation queries the response was YES. [2024-06-03 19:06:24,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7071 conditions, 1077 events. 560/1077 cut-off events. For 109548/109551 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6145 event pairs, 48 based on Foata normal form. 1/1073 useless extension candidates. Maximal degree in co-relation 6917. Up to 885 conditions per place. [2024-06-03 19:06:24,413 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 235 selfloop transitions, 52 changer transitions 0/290 dead transitions. [2024-06-03 19:06:24,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 290 transitions, 3325 flow [2024-06-03 19:06:24,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:24,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-03 19:06:24,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-03 19:06:24,414 INFO L175 Difference]: Start difference. First operand has 322 places, 274 transitions, 2654 flow. Second operand 11 states and 138 transitions. [2024-06-03 19:06:24,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 290 transitions, 3325 flow [2024-06-03 19:06:24,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 290 transitions, 3269 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 19:06:24,777 INFO L231 Difference]: Finished difference. Result has 327 places, 279 transitions, 2813 flow [2024-06-03 19:06:24,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2598, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2813, PETRI_PLACES=327, PETRI_TRANSITIONS=279} [2024-06-03 19:06:24,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-03 19:06:24,778 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 279 transitions, 2813 flow [2024-06-03 19:06:24,778 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) [2024-06-03 19:06:24,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:24,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:24,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-03 19:06:24,778 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)] === [2024-06-03 19:06:24,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:24,779 INFO L85 PathProgramCache]: Analyzing trace with hash -195253272, now seen corresponding path program 10 times [2024-06-03 19:06:24,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:24,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825846382] [2024-06-03 19:06:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:24,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:26,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:26,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825846382] [2024-06-03 19:06:26,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825846382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:26,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:26,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:26,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915456930] [2024-06-03 19:06:26,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:26,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:26,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:26,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:26,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:26,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:26,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 279 transitions, 2813 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) [2024-06-03 19:06:26,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:26,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:26,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:27,291 INFO L124 PetriNetUnfolderBase]: 564/1084 cut-off events. [2024-06-03 19:06:27,292 INFO L125 PetriNetUnfolderBase]: For 116089/116089 co-relation queries the response was YES. [2024-06-03 19:06:27,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7252 conditions, 1084 events. 564/1084 cut-off events. For 116089/116089 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6167 event pairs, 40 based on Foata normal form. 2/1084 useless extension candidates. Maximal degree in co-relation 7094. Up to 915 conditions per place. [2024-06-03 19:06:27,303 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 28 changer transitions 0/295 dead transitions. [2024-06-03 19:06:27,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 295 transitions, 3461 flow [2024-06-03 19:06:27,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:06:27,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:06:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-03 19:06:27,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-03 19:06:27,303 INFO L175 Difference]: Start difference. First operand has 327 places, 279 transitions, 2813 flow. Second operand 12 states and 139 transitions. [2024-06-03 19:06:27,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 295 transitions, 3461 flow [2024-06-03 19:06:27,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 295 transitions, 3343 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-03 19:06:27,664 INFO L231 Difference]: Finished difference. Result has 334 places, 280 transitions, 2787 flow [2024-06-03 19:06:27,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2787, PETRI_PLACES=334, PETRI_TRANSITIONS=280} [2024-06-03 19:06:27,665 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-03 19:06:27,665 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 280 transitions, 2787 flow [2024-06-03 19:06:27,665 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) [2024-06-03 19:06:27,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:27,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:27,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-03 19:06:27,665 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)] === [2024-06-03 19:06:27,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:27,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1637285718, now seen corresponding path program 11 times [2024-06-03 19:06:27,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:27,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015137114] [2024-06-03 19:06:27,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:27,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:29,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:29,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015137114] [2024-06-03 19:06:29,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015137114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:29,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:29,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:29,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327969930] [2024-06-03 19:06:29,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:29,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:29,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:29,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:29,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:29,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:29,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 280 transitions, 2787 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) [2024-06-03 19:06:29,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:29,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:29,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:29,528 INFO L124 PetriNetUnfolderBase]: 568/1093 cut-off events. [2024-06-03 19:06:29,528 INFO L125 PetriNetUnfolderBase]: For 118386/118389 co-relation queries the response was YES. [2024-06-03 19:06:29,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7287 conditions, 1093 events. 568/1093 cut-off events. For 118386/118389 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6243 event pairs, 48 based on Foata normal form. 2/1090 useless extension candidates. Maximal degree in co-relation 7128. Up to 916 conditions per place. [2024-06-03 19:06:29,542 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 44 changer transitions 0/293 dead transitions. [2024-06-03 19:06:29,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 293 transitions, 3427 flow [2024-06-03 19:06:29,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:29,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-03 19:06:29,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-03 19:06:29,543 INFO L175 Difference]: Start difference. First operand has 334 places, 280 transitions, 2787 flow. Second operand 11 states and 136 transitions. [2024-06-03 19:06:29,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 293 transitions, 3427 flow [2024-06-03 19:06:29,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 293 transitions, 3357 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-03 19:06:29,928 INFO L231 Difference]: Finished difference. Result has 336 places, 281 transitions, 2843 flow [2024-06-03 19:06:29,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2843, PETRI_PLACES=336, PETRI_TRANSITIONS=281} [2024-06-03 19:06:29,928 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-03 19:06:29,928 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 281 transitions, 2843 flow [2024-06-03 19:06:29,928 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) [2024-06-03 19:06:29,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:29,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:29,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-03 19:06:29,929 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)] === [2024-06-03 19:06:29,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:29,929 INFO L85 PathProgramCache]: Analyzing trace with hash -81660353, now seen corresponding path program 10 times [2024-06-03 19:06:29,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:29,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460126723] [2024-06-03 19:06:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:29,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:31,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:31,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460126723] [2024-06-03 19:06:31,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460126723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:31,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:31,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:31,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754248851] [2024-06-03 19:06:31,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:31,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:31,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:31,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:31,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:31,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:31,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 281 transitions, 2843 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) [2024-06-03 19:06:31,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:31,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:31,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:31,815 INFO L124 PetriNetUnfolderBase]: 571/1098 cut-off events. [2024-06-03 19:06:31,815 INFO L125 PetriNetUnfolderBase]: For 114615/114618 co-relation queries the response was YES. [2024-06-03 19:06:31,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7361 conditions, 1098 events. 571/1098 cut-off events. For 114615/114618 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6299 event pairs, 48 based on Foata normal form. 1/1094 useless extension candidates. Maximal degree in co-relation 7201. Up to 797 conditions per place. [2024-06-03 19:06:31,827 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 93 changer transitions 0/300 dead transitions. [2024-06-03 19:06:31,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 300 transitions, 3645 flow [2024-06-03 19:06:31,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:31,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-03 19:06:31,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-03 19:06:31,828 INFO L175 Difference]: Start difference. First operand has 336 places, 281 transitions, 2843 flow. Second operand 11 states and 138 transitions. [2024-06-03 19:06:31,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 300 transitions, 3645 flow [2024-06-03 19:06:32,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 300 transitions, 3501 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-03 19:06:32,173 INFO L231 Difference]: Finished difference. Result has 339 places, 288 transitions, 3093 flow [2024-06-03 19:06:32,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2699, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3093, PETRI_PLACES=339, PETRI_TRANSITIONS=288} [2024-06-03 19:06:32,174 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-03 19:06:32,174 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 288 transitions, 3093 flow [2024-06-03 19:06:32,174 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) [2024-06-03 19:06:32,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:32,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:32,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-03 19:06:32,175 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)] === [2024-06-03 19:06:32,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:32,175 INFO L85 PathProgramCache]: Analyzing trace with hash -628192493, now seen corresponding path program 11 times [2024-06-03 19:06:32,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:32,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871146982] [2024-06-03 19:06:32,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:32,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:33,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:33,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871146982] [2024-06-03 19:06:33,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871146982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:33,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:33,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830379958] [2024-06-03 19:06:33,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:33,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:33,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:33,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:33,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:33,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:33,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 288 transitions, 3093 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) [2024-06-03 19:06:33,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:33,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:33,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:34,282 INFO L124 PetriNetUnfolderBase]: 574/1103 cut-off events. [2024-06-03 19:06:34,282 INFO L125 PetriNetUnfolderBase]: For 116849/116852 co-relation queries the response was YES. [2024-06-03 19:06:34,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7503 conditions, 1103 events. 574/1103 cut-off events. For 116849/116852 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6314 event pairs, 48 based on Foata normal form. 1/1099 useless extension candidates. Maximal degree in co-relation 7340. Up to 938 conditions per place. [2024-06-03 19:06:34,293 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 257 selfloop transitions, 41 changer transitions 0/301 dead transitions. [2024-06-03 19:06:34,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 301 transitions, 3771 flow [2024-06-03 19:06:34,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:34,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-03 19:06:34,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-03 19:06:34,294 INFO L175 Difference]: Start difference. First operand has 339 places, 288 transitions, 3093 flow. Second operand 11 states and 134 transitions. [2024-06-03 19:06:34,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 301 transitions, 3771 flow [2024-06-03 19:06:34,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 301 transitions, 3513 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-03 19:06:34,693 INFO L231 Difference]: Finished difference. Result has 343 places, 290 transitions, 2982 flow [2024-06-03 19:06:34,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2835, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2982, PETRI_PLACES=343, PETRI_TRANSITIONS=290} [2024-06-03 19:06:34,693 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-03 19:06:34,693 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 290 transitions, 2982 flow [2024-06-03 19:06:34,694 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) [2024-06-03 19:06:34,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:34,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:34,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-03 19:06:34,694 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)] === [2024-06-03 19:06:34,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:34,694 INFO L85 PathProgramCache]: Analyzing trace with hash -627990683, now seen corresponding path program 12 times [2024-06-03 19:06:34,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:34,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617780500] [2024-06-03 19:06:34,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:34,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:37,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:37,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617780500] [2024-06-03 19:06:37,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617780500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:37,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:37,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:37,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715544724] [2024-06-03 19:06:37,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:37,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:37,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:37,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:37,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:37,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:37,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 290 transitions, 2982 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) [2024-06-03 19:06:37,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:37,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:37,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:37,706 INFO L124 PetriNetUnfolderBase]: 572/1100 cut-off events. [2024-06-03 19:06:37,706 INFO L125 PetriNetUnfolderBase]: For 110985/110988 co-relation queries the response was YES. [2024-06-03 19:06:37,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7217 conditions, 1100 events. 572/1100 cut-off events. For 110985/110988 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6318 event pairs, 48 based on Foata normal form. 1/1096 useless extension candidates. Maximal degree in co-relation 7054. Up to 935 conditions per place. [2024-06-03 19:06:37,718 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 256 selfloop transitions, 42 changer transitions 0/301 dead transitions. [2024-06-03 19:06:37,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 301 transitions, 3604 flow [2024-06-03 19:06:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 19:06:37,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-03 19:06:37,720 INFO L175 Difference]: Start difference. First operand has 343 places, 290 transitions, 2982 flow. Second operand 11 states and 133 transitions. [2024-06-03 19:06:37,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 301 transitions, 3604 flow [2024-06-03 19:06:38,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 301 transitions, 3411 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-03 19:06:38,083 INFO L231 Difference]: Finished difference. Result has 345 places, 290 transitions, 2878 flow [2024-06-03 19:06:38,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2789, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2878, PETRI_PLACES=345, PETRI_TRANSITIONS=290} [2024-06-03 19:06:38,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-03 19:06:38,083 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 290 transitions, 2878 flow [2024-06-03 19:06:38,084 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) [2024-06-03 19:06:38,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:38,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:38,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-03 19:06:38,084 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)] === [2024-06-03 19:06:38,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:38,084 INFO L85 PathProgramCache]: Analyzing trace with hash -81862163, now seen corresponding path program 13 times [2024-06-03 19:06:38,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:38,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420910627] [2024-06-03 19:06:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:38,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:39,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:39,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420910627] [2024-06-03 19:06:39,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420910627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:39,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:39,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:39,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930439933] [2024-06-03 19:06:39,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:39,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:39,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:39,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:39,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:40,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:40,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 290 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) [2024-06-03 19:06:40,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:40,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:40,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:40,563 INFO L124 PetriNetUnfolderBase]: 570/1097 cut-off events. [2024-06-03 19:06:40,563 INFO L125 PetriNetUnfolderBase]: For 105332/105335 co-relation queries the response was YES. [2024-06-03 19:06:40,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6980 conditions, 1097 events. 570/1097 cut-off events. For 105332/105335 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6288 event pairs, 48 based on Foata normal form. 1/1093 useless extension candidates. Maximal degree in co-relation 6816. Up to 796 conditions per place. [2024-06-03 19:06:40,576 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 95 changer transitions 0/302 dead transitions. [2024-06-03 19:06:40,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 302 transitions, 3514 flow [2024-06-03 19:06:40,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-03 19:06:40,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-03 19:06:40,577 INFO L175 Difference]: Start difference. First operand has 345 places, 290 transitions, 2878 flow. Second operand 11 states and 137 transitions. [2024-06-03 19:06:40,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 302 transitions, 3514 flow [2024-06-03 19:06:40,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 302 transitions, 3337 flow, removed 25 selfloop flow, removed 12 redundant places. [2024-06-03 19:06:40,983 INFO L231 Difference]: Finished difference. Result has 345 places, 291 transitions, 2920 flow [2024-06-03 19:06:40,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2920, PETRI_PLACES=345, PETRI_TRANSITIONS=291} [2024-06-03 19:06:40,983 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-03 19:06:40,983 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 291 transitions, 2920 flow [2024-06-03 19:06:40,983 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) [2024-06-03 19:06:40,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:40,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:40,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-03 19:06:40,983 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)] === [2024-06-03 19:06:40,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:40,984 INFO L85 PathProgramCache]: Analyzing trace with hash -627982964, now seen corresponding path program 12 times [2024-06-03 19:06:40,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:40,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491863698] [2024-06-03 19:06:40,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:40,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:42,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:42,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:42,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491863698] [2024-06-03 19:06:42,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491863698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:42,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:42,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:06:42,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463414441] [2024-06-03 19:06:42,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:42,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:06:42,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:06:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:06:42,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:42,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 291 transitions, 2920 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) [2024-06-03 19:06:42,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:42,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:42,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:42,542 INFO L124 PetriNetUnfolderBase]: 590/1141 cut-off events. [2024-06-03 19:06:42,542 INFO L125 PetriNetUnfolderBase]: For 178423/178426 co-relation queries the response was YES. [2024-06-03 19:06:42,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7372 conditions, 1141 events. 590/1141 cut-off events. For 178423/178426 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6585 event pairs, 52 based on Foata normal form. 12/1148 useless extension candidates. Maximal degree in co-relation 7207. Up to 934 conditions per place. [2024-06-03 19:06:42,554 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 262 selfloop transitions, 35 changer transitions 7/307 dead transitions. [2024-06-03 19:06:42,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 307 transitions, 3690 flow [2024-06-03 19:06:42,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:06:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:06:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-03 19:06:42,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 19:06:42,555 INFO L175 Difference]: Start difference. First operand has 345 places, 291 transitions, 2920 flow. Second operand 10 states and 128 transitions. [2024-06-03 19:06:42,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 307 transitions, 3690 flow [2024-06-03 19:06:42,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 307 transitions, 3464 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-03 19:06:42,973 INFO L231 Difference]: Finished difference. Result has 346 places, 289 transitions, 2783 flow [2024-06-03 19:06:42,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2694, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2783, PETRI_PLACES=346, PETRI_TRANSITIONS=289} [2024-06-03 19:06:42,973 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-03 19:06:42,973 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 289 transitions, 2783 flow [2024-06-03 19:06:42,973 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) [2024-06-03 19:06:42,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:42,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:42,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-03 19:06:42,973 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)] === [2024-06-03 19:06:42,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:42,974 INFO L85 PathProgramCache]: Analyzing trace with hash -426893714, now seen corresponding path program 13 times [2024-06-03 19:06:42,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:42,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262609861] [2024-06-03 19:06:42,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:42,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:44,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:44,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262609861] [2024-06-03 19:06:44,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262609861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:44,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:44,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:44,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46026558] [2024-06-03 19:06:44,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:44,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:44,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:44,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:44,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:44,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 289 transitions, 2783 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) [2024-06-03 19:06:44,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:44,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:44,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:44,795 INFO L124 PetriNetUnfolderBase]: 573/1106 cut-off events. [2024-06-03 19:06:44,796 INFO L125 PetriNetUnfolderBase]: For 116401/116404 co-relation queries the response was YES. [2024-06-03 19:06:44,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7038 conditions, 1106 events. 573/1106 cut-off events. For 116401/116404 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6378 event pairs, 48 based on Foata normal form. 2/1103 useless extension candidates. Maximal degree in co-relation 6872. Up to 932 conditions per place. [2024-06-03 19:06:44,806 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 257 selfloop transitions, 44 changer transitions 0/304 dead transitions. [2024-06-03 19:06:44,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 304 transitions, 3469 flow [2024-06-03 19:06:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:44,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 19:06:44,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 19:06:44,807 INFO L175 Difference]: Start difference. First operand has 346 places, 289 transitions, 2783 flow. Second operand 11 states and 135 transitions. [2024-06-03 19:06:44,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 304 transitions, 3469 flow [2024-06-03 19:06:45,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 304 transitions, 3367 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 19:06:45,202 INFO L231 Difference]: Finished difference. Result has 350 places, 292 transitions, 2838 flow [2024-06-03 19:06:45,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2838, PETRI_PLACES=350, PETRI_TRANSITIONS=292} [2024-06-03 19:06:45,202 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-03 19:06:45,202 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 292 transitions, 2838 flow [2024-06-03 19:06:45,202 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) [2024-06-03 19:06:45,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:45,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:45,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-03 19:06:45,203 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)] === [2024-06-03 19:06:45,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:45,203 INFO L85 PathProgramCache]: Analyzing trace with hash 2141985390, now seen corresponding path program 14 times [2024-06-03 19:06:45,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:45,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004725410] [2024-06-03 19:06:45,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:45,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:46,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:46,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004725410] [2024-06-03 19:06:46,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004725410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:46,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:46,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:46,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481349511] [2024-06-03 19:06:46,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:46,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:46,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:46,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:46,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:46,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:46,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 292 transitions, 2838 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) [2024-06-03 19:06:46,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:46,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:46,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:46,991 INFO L124 PetriNetUnfolderBase]: 577/1114 cut-off events. [2024-06-03 19:06:46,991 INFO L125 PetriNetUnfolderBase]: For 118421/118424 co-relation queries the response was YES. [2024-06-03 19:06:47,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7115 conditions, 1114 events. 577/1114 cut-off events. For 118421/118424 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6452 event pairs, 50 based on Foata normal form. 2/1111 useless extension candidates. Maximal degree in co-relation 6947. Up to 876 conditions per place. [2024-06-03 19:06:47,004 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 69 changer transitions 0/305 dead transitions. [2024-06-03 19:06:47,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 305 transitions, 3508 flow [2024-06-03 19:06:47,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:47,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:47,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-03 19:06:47,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-03 19:06:47,005 INFO L175 Difference]: Start difference. First operand has 350 places, 292 transitions, 2838 flow. Second operand 11 states and 136 transitions. [2024-06-03 19:06:47,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 305 transitions, 3508 flow [2024-06-03 19:06:47,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 305 transitions, 3389 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-03 19:06:47,370 INFO L231 Difference]: Finished difference. Result has 353 places, 293 transitions, 2901 flow [2024-06-03 19:06:47,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2901, PETRI_PLACES=353, PETRI_TRANSITIONS=293} [2024-06-03 19:06:47,370 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-03 19:06:47,370 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 293 transitions, 2901 flow [2024-06-03 19:06:47,370 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) [2024-06-03 19:06:47,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:47,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:47,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-03 19:06:47,370 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)] === [2024-06-03 19:06:47,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:47,371 INFO L85 PathProgramCache]: Analyzing trace with hash -74234024, now seen corresponding path program 15 times [2024-06-03 19:06:47,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:47,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965439374] [2024-06-03 19:06:47,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:47,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:49,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965439374] [2024-06-03 19:06:49,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965439374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:49,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:49,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:49,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544917741] [2024-06-03 19:06:49,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:49,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:49,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:49,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:49,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:49,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 293 transitions, 2901 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) [2024-06-03 19:06:49,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:49,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:49,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:49,865 INFO L124 PetriNetUnfolderBase]: 588/1135 cut-off events. [2024-06-03 19:06:49,865 INFO L125 PetriNetUnfolderBase]: For 135348/135351 co-relation queries the response was YES. [2024-06-03 19:06:49,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7593 conditions, 1135 events. 588/1135 cut-off events. For 135348/135351 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6615 event pairs, 49 based on Foata normal form. 2/1132 useless extension candidates. Maximal degree in co-relation 7424. Up to 866 conditions per place. [2024-06-03 19:06:49,878 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 73 changer transitions 0/309 dead transitions. [2024-06-03 19:06:49,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 309 transitions, 3861 flow [2024-06-03 19:06:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:49,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-03 19:06:49,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-03 19:06:49,879 INFO L175 Difference]: Start difference. First operand has 353 places, 293 transitions, 2901 flow. Second operand 11 states and 140 transitions. [2024-06-03 19:06:49,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 309 transitions, 3861 flow [2024-06-03 19:06:50,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 309 transitions, 3676 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-03 19:06:50,290 INFO L231 Difference]: Finished difference. Result has 354 places, 295 transitions, 2948 flow [2024-06-03 19:06:50,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2948, PETRI_PLACES=354, PETRI_TRANSITIONS=295} [2024-06-03 19:06:50,290 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-03 19:06:50,291 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 295 transitions, 2948 flow [2024-06-03 19:06:50,291 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) [2024-06-03 19:06:50,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:50,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:50,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-03 19:06:50,291 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)] === [2024-06-03 19:06:50,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2145572596, now seen corresponding path program 16 times [2024-06-03 19:06:50,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:50,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407076474] [2024-06-03 19:06:50,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:50,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:51,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:51,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407076474] [2024-06-03 19:06:51,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407076474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:51,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:51,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888242925] [2024-06-03 19:06:51,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:51,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:51,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:51,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:51,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:52,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:52,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 295 transitions, 2948 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) [2024-06-03 19:06:52,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:52,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:52,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:52,501 INFO L124 PetriNetUnfolderBase]: 595/1146 cut-off events. [2024-06-03 19:06:52,501 INFO L125 PetriNetUnfolderBase]: For 137934/137937 co-relation queries the response was YES. [2024-06-03 19:06:52,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7676 conditions, 1146 events. 595/1146 cut-off events. For 137934/137937 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6705 event pairs, 55 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 7507. Up to 877 conditions per place. [2024-06-03 19:06:52,514 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 230 selfloop transitions, 77 changer transitions 0/310 dead transitions. [2024-06-03 19:06:52,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 310 transitions, 3654 flow [2024-06-03 19:06:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:52,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-03 19:06:52,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-03 19:06:52,515 INFO L175 Difference]: Start difference. First operand has 354 places, 295 transitions, 2948 flow. Second operand 11 states and 139 transitions. [2024-06-03 19:06:52,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 310 transitions, 3654 flow [2024-06-03 19:06:52,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 310 transitions, 3505 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-03 19:06:52,936 INFO L231 Difference]: Finished difference. Result has 358 places, 298 transitions, 3023 flow [2024-06-03 19:06:52,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3023, PETRI_PLACES=358, PETRI_TRANSITIONS=298} [2024-06-03 19:06:52,936 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-03 19:06:52,936 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 298 transitions, 3023 flow [2024-06-03 19:06:52,936 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) [2024-06-03 19:06:52,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:52,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:52,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-03 19:06:52,936 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)] === [2024-06-03 19:06:52,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:52,937 INFO L85 PathProgramCache]: Analyzing trace with hash -426901433, now seen corresponding path program 14 times [2024-06-03 19:06:52,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:52,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332404526] [2024-06-03 19:06:52,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:52,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:54,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:54,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332404526] [2024-06-03 19:06:54,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332404526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:54,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:54,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:54,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169228715] [2024-06-03 19:06:54,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:54,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:54,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:54,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:54,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:54,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:54,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 298 transitions, 3023 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) [2024-06-03 19:06:54,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:54,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:54,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:54,840 INFO L124 PetriNetUnfolderBase]: 593/1145 cut-off events. [2024-06-03 19:06:54,841 INFO L125 PetriNetUnfolderBase]: For 124790/124793 co-relation queries the response was YES. [2024-06-03 19:06:54,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7540 conditions, 1145 events. 593/1145 cut-off events. For 124790/124793 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6700 event pairs, 51 based on Foata normal form. 1/1141 useless extension candidates. Maximal degree in co-relation 7371. Up to 956 conditions per place. [2024-06-03 19:06:54,853 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 253 selfloop transitions, 53 changer transitions 0/309 dead transitions. [2024-06-03 19:06:54,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 309 transitions, 3661 flow [2024-06-03 19:06:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:54,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-03 19:06:54,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-03 19:06:54,854 INFO L175 Difference]: Start difference. First operand has 358 places, 298 transitions, 3023 flow. Second operand 11 states and 136 transitions. [2024-06-03 19:06:54,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 309 transitions, 3661 flow [2024-06-03 19:06:55,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 309 transitions, 3437 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-03 19:06:55,272 INFO L231 Difference]: Finished difference. Result has 361 places, 298 transitions, 2910 flow [2024-06-03 19:06:55,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2910, PETRI_PLACES=361, PETRI_TRANSITIONS=298} [2024-06-03 19:06:55,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-03 19:06:55,272 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 298 transitions, 2910 flow [2024-06-03 19:06:55,272 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) [2024-06-03 19:06:55,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:55,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:55,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-03 19:06:55,273 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)] === [2024-06-03 19:06:55,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:55,273 INFO L85 PathProgramCache]: Analyzing trace with hash -426634244, now seen corresponding path program 17 times [2024-06-03 19:06:55,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:55,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824406771] [2024-06-03 19:06:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:55,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:56,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:56,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824406771] [2024-06-03 19:06:56,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824406771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:56,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:56,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:06:56,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423056298] [2024-06-03 19:06:56,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:56,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:06:56,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:56,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:06:56,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:06:56,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:56,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 298 transitions, 2910 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) [2024-06-03 19:06:56,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:56,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:56,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:56,954 INFO L124 PetriNetUnfolderBase]: 597/1153 cut-off events. [2024-06-03 19:06:56,954 INFO L125 PetriNetUnfolderBase]: For 133827/133830 co-relation queries the response was YES. [2024-06-03 19:06:56,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 1153 events. 597/1153 cut-off events. For 133827/133830 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6747 event pairs, 53 based on Foata normal form. 2/1150 useless extension candidates. Maximal degree in co-relation 7337. Up to 961 conditions per place. [2024-06-03 19:06:56,967 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 49 changer transitions 0/310 dead transitions. [2024-06-03 19:06:56,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 310 transitions, 3592 flow [2024-06-03 19:06:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:06:56,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:06:56,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-03 19:06:56,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-03 19:06:56,968 INFO L175 Difference]: Start difference. First operand has 361 places, 298 transitions, 2910 flow. Second operand 10 states and 127 transitions. [2024-06-03 19:06:56,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 310 transitions, 3592 flow [2024-06-03 19:06:57,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 310 transitions, 3472 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 19:06:57,398 INFO L231 Difference]: Finished difference. Result has 361 places, 299 transitions, 2938 flow [2024-06-03 19:06:57,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2790, PETRI_DIFFERENCE_MINUEND_PLACES=351, 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=2938, PETRI_PLACES=361, PETRI_TRANSITIONS=299} [2024-06-03 19:06:57,398 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-03 19:06:57,398 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 299 transitions, 2938 flow [2024-06-03 19:06:57,398 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) [2024-06-03 19:06:57,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:57,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:57,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-03 19:06:57,399 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)] === [2024-06-03 19:06:57,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:57,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1256952805, now seen corresponding path program 15 times [2024-06-03 19:06:57,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:57,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510197116] [2024-06-03 19:06:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:57,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:06:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:06:58,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:06:58,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510197116] [2024-06-03 19:06:58,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510197116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:06:58,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:06:58,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:06:58,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370714014] [2024-06-03 19:06:58,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:06:58,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:06:58,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:06:58,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:06:58,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:06:58,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:06:58,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 299 transitions, 2938 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) [2024-06-03 19:06:58,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:06:58,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:06:58,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:06:59,397 INFO L124 PetriNetUnfolderBase]: 595/1150 cut-off events. [2024-06-03 19:06:59,397 INFO L125 PetriNetUnfolderBase]: For 121204/121207 co-relation queries the response was YES. [2024-06-03 19:06:59,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7374 conditions, 1150 events. 595/1150 cut-off events. For 121204/121207 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6732 event pairs, 53 based on Foata normal form. 1/1146 useless extension candidates. Maximal degree in co-relation 7203. Up to 703 conditions per place. [2024-06-03 19:06:59,411 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 136 changer transitions 0/311 dead transitions. [2024-06-03 19:06:59,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 311 transitions, 3826 flow [2024-06-03 19:06:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:06:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:06:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-03 19:06:59,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-03 19:06:59,412 INFO L175 Difference]: Start difference. First operand has 361 places, 299 transitions, 2938 flow. Second operand 11 states and 145 transitions. [2024-06-03 19:06:59,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 311 transitions, 3826 flow [2024-06-03 19:06:59,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 311 transitions, 3652 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-03 19:06:59,811 INFO L231 Difference]: Finished difference. Result has 364 places, 299 transitions, 3041 flow [2024-06-03 19:06:59,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3041, PETRI_PLACES=364, PETRI_TRANSITIONS=299} [2024-06-03 19:06:59,812 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-03 19:06:59,812 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 299 transitions, 3041 flow [2024-06-03 19:06:59,812 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) [2024-06-03 19:06:59,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:06:59,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:06:59,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-03 19:06:59,813 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)] === [2024-06-03 19:06:59,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:06:59,813 INFO L85 PathProgramCache]: Analyzing trace with hash -426624944, now seen corresponding path program 18 times [2024-06-03 19:06:59,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:06:59,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131647337] [2024-06-03 19:06:59,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:06:59,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:06:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:01,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:01,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:01,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131647337] [2024-06-03 19:07:01,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131647337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:01,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:01,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:01,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689467580] [2024-06-03 19:07:01,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:01,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:01,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:01,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:01,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:01,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:01,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 299 transitions, 3041 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) [2024-06-03 19:07:01,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:01,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:01,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:01,682 INFO L124 PetriNetUnfolderBase]: 592/1145 cut-off events. [2024-06-03 19:07:01,683 INFO L125 PetriNetUnfolderBase]: For 114812/114815 co-relation queries the response was YES. [2024-06-03 19:07:01,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7154 conditions, 1145 events. 592/1145 cut-off events. For 114812/114815 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6728 event pairs, 50 based on Foata normal form. 2/1142 useless extension candidates. Maximal degree in co-relation 6982. Up to 927 conditions per place. [2024-06-03 19:07:01,693 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 55 changer transitions 0/312 dead transitions. [2024-06-03 19:07:01,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 312 transitions, 3689 flow [2024-06-03 19:07:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-03 19:07:01,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-03 19:07:01,694 INFO L175 Difference]: Start difference. First operand has 364 places, 299 transitions, 3041 flow. Second operand 11 states and 137 transitions. [2024-06-03 19:07:01,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 312 transitions, 3689 flow [2024-06-03 19:07:02,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 312 transitions, 3408 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 19:07:02,083 INFO L231 Difference]: Finished difference. Result has 365 places, 299 transitions, 2874 flow [2024-06-03 19:07:02,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2874, PETRI_PLACES=365, PETRI_TRANSITIONS=299} [2024-06-03 19:07:02,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-03 19:07:02,083 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 299 transitions, 2874 flow [2024-06-03 19:07:02,084 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) [2024-06-03 19:07:02,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:02,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:02,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-03 19:07:02,084 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)] === [2024-06-03 19:07:02,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:02,084 INFO L85 PathProgramCache]: Analyzing trace with hash -434253083, now seen corresponding path program 16 times [2024-06-03 19:07:02,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:02,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781831154] [2024-06-03 19:07:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:02,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:04,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:04,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781831154] [2024-06-03 19:07:04,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781831154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:04,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:04,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:04,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001486601] [2024-06-03 19:07:04,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:04,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:04,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:04,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:04,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:04,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:04,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 299 transitions, 2874 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) [2024-06-03 19:07:04,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:04,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:04,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:04,891 INFO L124 PetriNetUnfolderBase]: 590/1142 cut-off events. [2024-06-03 19:07:04,891 INFO L125 PetriNetUnfolderBase]: For 101007/101010 co-relation queries the response was YES. [2024-06-03 19:07:04,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 1142 events. 590/1142 cut-off events. For 101007/101010 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6702 event pairs, 52 based on Foata normal form. 1/1138 useless extension candidates. Maximal degree in co-relation 6685. Up to 953 conditions per place. [2024-06-03 19:07:04,905 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 255 selfloop transitions, 52 changer transitions 0/310 dead transitions. [2024-06-03 19:07:04,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 310 transitions, 3514 flow [2024-06-03 19:07:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-03 19:07:04,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-03 19:07:04,906 INFO L175 Difference]: Start difference. First operand has 365 places, 299 transitions, 2874 flow. Second operand 11 states and 137 transitions. [2024-06-03 19:07:04,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 310 transitions, 3514 flow [2024-06-03 19:07:05,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 310 transitions, 3244 flow, removed 43 selfloop flow, removed 12 redundant places. [2024-06-03 19:07:05,266 INFO L231 Difference]: Finished difference. Result has 364 places, 299 transitions, 2713 flow [2024-06-03 19:07:05,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2604, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2713, PETRI_PLACES=364, PETRI_TRANSITIONS=299} [2024-06-03 19:07:05,267 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-03 19:07:05,267 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 299 transitions, 2713 flow [2024-06-03 19:07:05,267 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) [2024-06-03 19:07:05,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:05,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:05,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-03 19:07:05,267 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)] === [2024-06-03 19:07:05,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:05,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1256960524, now seen corresponding path program 19 times [2024-06-03 19:07:05,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:05,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038367368] [2024-06-03 19:07:05,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:05,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:06,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:06,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038367368] [2024-06-03 19:07:06,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038367368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:06,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:06,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:07:06,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406103151] [2024-06-03 19:07:06,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:06,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:07:06,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:06,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:07:06,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:07:06,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:06,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 299 transitions, 2713 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) [2024-06-03 19:07:06,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:06,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:06,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:06,878 INFO L124 PetriNetUnfolderBase]: 587/1137 cut-off events. [2024-06-03 19:07:06,878 INFO L125 PetriNetUnfolderBase]: For 93599/93602 co-relation queries the response was YES. [2024-06-03 19:07:06,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6232 conditions, 1137 events. 587/1137 cut-off events. For 93599/93602 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6653 event pairs, 51 based on Foata normal form. 2/1134 useless extension candidates. Maximal degree in co-relation 6062. Up to 833 conditions per place. [2024-06-03 19:07:06,887 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 217 selfloop transitions, 90 changer transitions 0/310 dead transitions. [2024-06-03 19:07:06,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 310 transitions, 3353 flow [2024-06-03 19:07:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:07:06,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:07:06,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-03 19:07:06,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-03 19:07:06,888 INFO L175 Difference]: Start difference. First operand has 364 places, 299 transitions, 2713 flow. Second operand 10 states and 131 transitions. [2024-06-03 19:07:06,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 310 transitions, 3353 flow [2024-06-03 19:07:07,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 310 transitions, 3184 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-03 19:07:07,227 INFO L231 Difference]: Finished difference. Result has 363 places, 299 transitions, 2730 flow [2024-06-03 19:07:07,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2730, PETRI_PLACES=363, PETRI_TRANSITIONS=299} [2024-06-03 19:07:07,227 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-03 19:07:07,227 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 299 transitions, 2730 flow [2024-06-03 19:07:07,228 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) [2024-06-03 19:07:07,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:07,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:07,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-03 19:07:07,228 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)] === [2024-06-03 19:07:07,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:07,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1591530507, now seen corresponding path program 1 times [2024-06-03 19:07:07,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:07,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273754082] [2024-06-03 19:07:07,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:07,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:08,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:08,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273754082] [2024-06-03 19:07:08,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273754082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:08,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:08,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:08,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014507982] [2024-06-03 19:07:08,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:08,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:08,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:08,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:08,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:08,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:08,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 299 transitions, 2730 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) [2024-06-03 19:07:08,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:08,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:08,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:08,778 INFO L124 PetriNetUnfolderBase]: 599/1164 cut-off events. [2024-06-03 19:07:08,778 INFO L125 PetriNetUnfolderBase]: For 139394/139394 co-relation queries the response was YES. [2024-06-03 19:07:08,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6408 conditions, 1164 events. 599/1164 cut-off events. For 139394/139394 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6851 event pairs, 37 based on Foata normal form. 8/1170 useless extension candidates. Maximal degree in co-relation 6237. Up to 980 conditions per place. [2024-06-03 19:07:08,791 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 289 selfloop transitions, 15 changer transitions 18/325 dead transitions. [2024-06-03 19:07:08,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 325 transitions, 3494 flow [2024-06-03 19:07:08,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:08,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 19:07:08,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 19:07:08,792 INFO L175 Difference]: Start difference. First operand has 363 places, 299 transitions, 2730 flow. Second operand 11 states and 135 transitions. [2024-06-03 19:07:08,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 325 transitions, 3494 flow [2024-06-03 19:07:09,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 325 transitions, 3302 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 19:07:09,102 INFO L231 Difference]: Finished difference. Result has 365 places, 295 transitions, 2552 flow [2024-06-03 19:07:09,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2552, PETRI_PLACES=365, PETRI_TRANSITIONS=295} [2024-06-03 19:07:09,103 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-03 19:07:09,103 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 295 transitions, 2552 flow [2024-06-03 19:07:09,103 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) [2024-06-03 19:07:09,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:09,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:09,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-03 19:07:09,103 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)] === [2024-06-03 19:07:09,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:09,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1234576431, now seen corresponding path program 2 times [2024-06-03 19:07:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:09,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120311218] [2024-06-03 19:07:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:09,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:10,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:10,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120311218] [2024-06-03 19:07:10,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120311218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:10,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:10,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:10,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71938787] [2024-06-03 19:07:10,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:10,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:10,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:10,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:10,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:10,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 295 transitions, 2552 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) [2024-06-03 19:07:10,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:10,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:10,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:10,880 INFO L124 PetriNetUnfolderBase]: 571/1106 cut-off events. [2024-06-03 19:07:10,880 INFO L125 PetriNetUnfolderBase]: For 93371/93371 co-relation queries the response was YES. [2024-06-03 19:07:10,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6058 conditions, 1106 events. 571/1106 cut-off events. For 93371/93371 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6444 event pairs, 35 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 5886. Up to 973 conditions per place. [2024-06-03 19:07:10,892 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 288 selfloop transitions, 22 changer transitions 0/313 dead transitions. [2024-06-03 19:07:10,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 313 transitions, 3256 flow [2024-06-03 19:07:10,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:10,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:07:10,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 19:07:10,893 INFO L175 Difference]: Start difference. First operand has 365 places, 295 transitions, 2552 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:07:10,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 313 transitions, 3256 flow [2024-06-03 19:07:11,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 313 transitions, 3218 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 19:07:11,228 INFO L231 Difference]: Finished difference. Result has 359 places, 296 transitions, 2602 flow [2024-06-03 19:07:11,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2602, PETRI_PLACES=359, PETRI_TRANSITIONS=296} [2024-06-03 19:07:11,228 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-03 19:07:11,228 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 296 transitions, 2602 flow [2024-06-03 19:07:11,228 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) [2024-06-03 19:07:11,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:11,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:11,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-03 19:07:11,228 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)] === [2024-06-03 19:07:11,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:11,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1234754061, now seen corresponding path program 3 times [2024-06-03 19:07:11,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:11,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056004558] [2024-06-03 19:07:11,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:11,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:12,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:12,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056004558] [2024-06-03 19:07:12,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056004558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:12,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:12,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:12,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470843231] [2024-06-03 19:07:12,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:12,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:12,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:12,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:12,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:12,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:12,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 296 transitions, 2602 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) [2024-06-03 19:07:12,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:12,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:12,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:12,993 INFO L124 PetriNetUnfolderBase]: 575/1114 cut-off events. [2024-06-03 19:07:12,993 INFO L125 PetriNetUnfolderBase]: For 89581/89581 co-relation queries the response was YES. [2024-06-03 19:07:13,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6143 conditions, 1114 events. 575/1114 cut-off events. For 89581/89581 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6514 event pairs, 35 based on Foata normal form. 2/1114 useless extension candidates. Maximal degree in co-relation 5974. Up to 967 conditions per place. [2024-06-03 19:07:13,006 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 289 selfloop transitions, 23 changer transitions 0/315 dead transitions. [2024-06-03 19:07:13,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 315 transitions, 3314 flow [2024-06-03 19:07:13,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:13,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:13,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 19:07:13,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-03 19:07:13,007 INFO L175 Difference]: Start difference. First operand has 359 places, 296 transitions, 2602 flow. Second operand 11 states and 131 transitions. [2024-06-03 19:07:13,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 315 transitions, 3314 flow [2024-06-03 19:07:13,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 315 transitions, 3236 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-03 19:07:13,332 INFO L231 Difference]: Finished difference. Result has 361 places, 297 transitions, 2616 flow [2024-06-03 19:07:13,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2616, PETRI_PLACES=361, PETRI_TRANSITIONS=297} [2024-06-03 19:07:13,332 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-03 19:07:13,332 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 297 transitions, 2616 flow [2024-06-03 19:07:13,332 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) [2024-06-03 19:07:13,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:13,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:13,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-03 19:07:13,333 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)] === [2024-06-03 19:07:13,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:13,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1239338031, now seen corresponding path program 4 times [2024-06-03 19:07:13,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:13,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482473720] [2024-06-03 19:07:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:13,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:14,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:14,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482473720] [2024-06-03 19:07:14,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482473720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:14,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:14,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:14,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912707589] [2024-06-03 19:07:14,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:14,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:14,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:14,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:14,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:14,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:14,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 297 transitions, 2616 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) [2024-06-03 19:07:14,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:14,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:14,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:14,936 INFO L124 PetriNetUnfolderBase]: 579/1122 cut-off events. [2024-06-03 19:07:14,936 INFO L125 PetriNetUnfolderBase]: For 89673/89673 co-relation queries the response was YES. [2024-06-03 19:07:14,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6196 conditions, 1122 events. 579/1122 cut-off events. For 89673/89673 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6567 event pairs, 35 based on Foata normal form. 2/1122 useless extension candidates. Maximal degree in co-relation 6026. Up to 979 conditions per place. [2024-06-03 19:07:14,948 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 294 selfloop transitions, 20 changer transitions 0/317 dead transitions. [2024-06-03 19:07:14,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 317 transitions, 3336 flow [2024-06-03 19:07:14,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:14,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:07:14,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 19:07:14,949 INFO L175 Difference]: Start difference. First operand has 361 places, 297 transitions, 2616 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:07:14,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 317 transitions, 3336 flow [2024-06-03 19:07:15,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 317 transitions, 3254 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-03 19:07:15,392 INFO L231 Difference]: Finished difference. Result has 363 places, 298 transitions, 2622 flow [2024-06-03 19:07:15,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2622, PETRI_PLACES=363, PETRI_TRANSITIONS=298} [2024-06-03 19:07:15,392 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-03 19:07:15,392 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 298 transitions, 2622 flow [2024-06-03 19:07:15,392 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) [2024-06-03 19:07:15,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:15,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:15,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-03 19:07:15,393 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)] === [2024-06-03 19:07:15,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:15,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1234569487, now seen corresponding path program 1 times [2024-06-03 19:07:15,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:15,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873795048] [2024-06-03 19:07:15,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:15,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:17,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:17,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:17,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873795048] [2024-06-03 19:07:17,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873795048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:17,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:17,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:07:17,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692098794] [2024-06-03 19:07:17,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:17,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:07:17,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:17,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:07:17,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:07:17,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:17,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 298 transitions, 2622 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) [2024-06-03 19:07:17,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:17,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:17,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:17,721 INFO L124 PetriNetUnfolderBase]: 591/1150 cut-off events. [2024-06-03 19:07:17,721 INFO L125 PetriNetUnfolderBase]: For 136116/136116 co-relation queries the response was YES. [2024-06-03 19:07:17,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6311 conditions, 1150 events. 591/1150 cut-off events. For 136116/136116 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 6774 event pairs, 45 based on Foata normal form. 8/1156 useless extension candidates. Maximal degree in co-relation 6140. Up to 988 conditions per place. [2024-06-03 19:07:17,734 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 287 selfloop transitions, 20 changer transitions 9/319 dead transitions. [2024-06-03 19:07:17,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 319 transitions, 3366 flow [2024-06-03 19:07:17,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:07:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:07:17,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-03 19:07:17,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 19:07:17,734 INFO L175 Difference]: Start difference. First operand has 363 places, 298 transitions, 2622 flow. Second operand 12 states and 141 transitions. [2024-06-03 19:07:17,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 319 transitions, 3366 flow [2024-06-03 19:07:18,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 319 transitions, 3288 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-03 19:07:18,103 INFO L231 Difference]: Finished difference. Result has 366 places, 295 transitions, 2563 flow [2024-06-03 19:07:18,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2563, PETRI_PLACES=366, PETRI_TRANSITIONS=295} [2024-06-03 19:07:18,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-03 19:07:18,104 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 295 transitions, 2563 flow [2024-06-03 19:07:18,104 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) [2024-06-03 19:07:18,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:18,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:18,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-03 19:07:18,104 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)] === [2024-06-03 19:07:18,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:18,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2113558037, now seen corresponding path program 5 times [2024-06-03 19:07:18,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:18,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855292914] [2024-06-03 19:07:18,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:18,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:19,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:19,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855292914] [2024-06-03 19:07:19,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855292914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:19,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:19,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:19,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374906708] [2024-06-03 19:07:19,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:19,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:19,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:19,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:19,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:19,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:19,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 295 transitions, 2563 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) [2024-06-03 19:07:19,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:19,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:19,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:19,916 INFO L124 PetriNetUnfolderBase]: 586/1143 cut-off events. [2024-06-03 19:07:19,916 INFO L125 PetriNetUnfolderBase]: For 136921/136921 co-relation queries the response was YES. [2024-06-03 19:07:19,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6208 conditions, 1143 events. 586/1143 cut-off events. For 136921/136921 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6715 event pairs, 41 based on Foata normal form. 8/1149 useless extension candidates. Maximal degree in co-relation 6036. Up to 983 conditions per place. [2024-06-03 19:07:19,929 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 282 selfloop transitions, 19 changer transitions 12/316 dead transitions. [2024-06-03 19:07:19,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 316 transitions, 3301 flow [2024-06-03 19:07:19,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 19:07:19,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:07:19,930 INFO L175 Difference]: Start difference. First operand has 366 places, 295 transitions, 2563 flow. Second operand 11 states and 132 transitions. [2024-06-03 19:07:19,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 316 transitions, 3301 flow [2024-06-03 19:07:20,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 316 transitions, 3165 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-03 19:07:20,320 INFO L231 Difference]: Finished difference. Result has 362 places, 291 transitions, 2433 flow [2024-06-03 19:07:20,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2433, PETRI_PLACES=362, PETRI_TRANSITIONS=291} [2024-06-03 19:07:20,321 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-03 19:07:20,321 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 291 transitions, 2433 flow [2024-06-03 19:07:20,321 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) [2024-06-03 19:07:20,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:20,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:20,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-03 19:07:20,321 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)] === [2024-06-03 19:07:20,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:20,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2113673357, now seen corresponding path program 6 times [2024-06-03 19:07:20,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:20,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101550376] [2024-06-03 19:07:20,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:20,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:21,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:21,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101550376] [2024-06-03 19:07:21,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101550376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:21,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:21,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:21,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815572879] [2024-06-03 19:07:21,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:21,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:21,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:21,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:21,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:21,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:21,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 291 transitions, 2433 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) [2024-06-03 19:07:21,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:21,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:21,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:22,081 INFO L124 PetriNetUnfolderBase]: 577/1128 cut-off events. [2024-06-03 19:07:22,081 INFO L125 PetriNetUnfolderBase]: For 136809/136809 co-relation queries the response was YES. [2024-06-03 19:07:22,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5965 conditions, 1128 events. 577/1128 cut-off events. For 136809/136809 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6592 event pairs, 37 based on Foata normal form. 8/1134 useless extension candidates. Maximal degree in co-relation 5795. Up to 963 conditions per place. [2024-06-03 19:07:22,095 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 279 selfloop transitions, 16 changer transitions 15/313 dead transitions. [2024-06-03 19:07:22,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 313 transitions, 3165 flow [2024-06-03 19:07:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:22,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:22,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 19:07:22,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:07:22,096 INFO L175 Difference]: Start difference. First operand has 362 places, 291 transitions, 2433 flow. Second operand 11 states and 132 transitions. [2024-06-03 19:07:22,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 313 transitions, 3165 flow [2024-06-03 19:07:22,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 313 transitions, 3121 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 19:07:22,435 INFO L231 Difference]: Finished difference. Result has 358 places, 286 transitions, 2386 flow [2024-06-03 19:07:22,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2386, PETRI_PLACES=358, PETRI_TRANSITIONS=286} [2024-06-03 19:07:22,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-03 19:07:22,435 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 286 transitions, 2386 flow [2024-06-03 19:07:22,435 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) [2024-06-03 19:07:22,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:22,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:22,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-03 19:07:22,436 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)] === [2024-06-03 19:07:22,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1942677977, now seen corresponding path program 7 times [2024-06-03 19:07:22,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:22,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683832597] [2024-06-03 19:07:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:22,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:23,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:23,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683832597] [2024-06-03 19:07:23,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683832597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:23,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:23,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:23,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204813450] [2024-06-03 19:07:23,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:23,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:23,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:23,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:23,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:23,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:23,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 286 transitions, 2386 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) [2024-06-03 19:07:23,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:23,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:23,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:24,207 INFO L124 PetriNetUnfolderBase]: 555/1078 cut-off events. [2024-06-03 19:07:24,207 INFO L125 PetriNetUnfolderBase]: For 93328/93328 co-relation queries the response was YES. [2024-06-03 19:07:24,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5775 conditions, 1078 events. 555/1078 cut-off events. For 93328/93328 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6258 event pairs, 37 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 5607. Up to 936 conditions per place. [2024-06-03 19:07:24,219 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 268 selfloop transitions, 33 changer transitions 0/304 dead transitions. [2024-06-03 19:07:24,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 304 transitions, 3078 flow [2024-06-03 19:07:24,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:24,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 19:07:24,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 19:07:24,220 INFO L175 Difference]: Start difference. First operand has 358 places, 286 transitions, 2386 flow. Second operand 11 states and 135 transitions. [2024-06-03 19:07:24,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 304 transitions, 3078 flow [2024-06-03 19:07:24,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 304 transitions, 3040 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 19:07:24,498 INFO L231 Difference]: Finished difference. Result has 353 places, 287 transitions, 2464 flow [2024-06-03 19:07:24,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2464, PETRI_PLACES=353, PETRI_TRANSITIONS=287} [2024-06-03 19:07:24,499 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-03 19:07:24,499 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 287 transitions, 2464 flow [2024-06-03 19:07:24,499 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) [2024-06-03 19:07:24,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:24,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:24,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-03 19:07:24,499 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)] === [2024-06-03 19:07:24,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:24,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1936421867, now seen corresponding path program 8 times [2024-06-03 19:07:24,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:24,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453930189] [2024-06-03 19:07:24,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:24,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:25,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:25,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:25,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453930189] [2024-06-03 19:07:25,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453930189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:25,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:25,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:25,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738136855] [2024-06-03 19:07:25,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:25,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:25,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:25,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:25,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:25,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:25,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 287 transitions, 2464 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) [2024-06-03 19:07:25,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:25,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:25,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:26,309 INFO L124 PetriNetUnfolderBase]: 571/1114 cut-off events. [2024-06-03 19:07:26,309 INFO L125 PetriNetUnfolderBase]: For 147189/147189 co-relation queries the response was YES. [2024-06-03 19:07:26,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6067 conditions, 1114 events. 571/1114 cut-off events. For 147189/147189 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6512 event pairs, 43 based on Foata normal form. 10/1122 useless extension candidates. Maximal degree in co-relation 5901. Up to 940 conditions per place. [2024-06-03 19:07:26,323 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 270 selfloop transitions, 29 changer transitions 6/308 dead transitions. [2024-06-03 19:07:26,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 308 transitions, 3226 flow [2024-06-03 19:07:26,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:26,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:26,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-03 19:07:26,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-03 19:07:26,323 INFO L175 Difference]: Start difference. First operand has 353 places, 287 transitions, 2464 flow. Second operand 11 states and 137 transitions. [2024-06-03 19:07:26,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 308 transitions, 3226 flow [2024-06-03 19:07:26,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 308 transitions, 3120 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-03 19:07:26,637 INFO L231 Difference]: Finished difference. Result has 355 places, 285 transitions, 2445 flow [2024-06-03 19:07:26,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2445, PETRI_PLACES=355, PETRI_TRANSITIONS=285} [2024-06-03 19:07:26,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-03 19:07:26,637 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 285 transitions, 2445 flow [2024-06-03 19:07:26,637 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) [2024-06-03 19:07:26,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:26,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:26,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-03 19:07:26,637 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)] === [2024-06-03 19:07:26,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:26,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1780656883, now seen corresponding path program 9 times [2024-06-03 19:07:26,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:26,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714758656] [2024-06-03 19:07:26,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:26,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:28,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:28,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714758656] [2024-06-03 19:07:28,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714758656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:28,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:28,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:28,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576530880] [2024-06-03 19:07:28,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:28,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:28,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:28,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:28,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:28,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 285 transitions, 2445 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) [2024-06-03 19:07:28,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:28,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:28,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:28,677 INFO L124 PetriNetUnfolderBase]: 558/1085 cut-off events. [2024-06-03 19:07:28,677 INFO L125 PetriNetUnfolderBase]: For 93077/93077 co-relation queries the response was YES. [2024-06-03 19:07:28,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 1085 events. 558/1085 cut-off events. For 93077/93077 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6302 event pairs, 37 based on Foata normal form. 2/1085 useless extension candidates. Maximal degree in co-relation 5737. Up to 928 conditions per place. [2024-06-03 19:07:28,689 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 269 selfloop transitions, 32 changer transitions 0/304 dead transitions. [2024-06-03 19:07:28,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 304 transitions, 3143 flow [2024-06-03 19:07:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 19:07:28,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 19:07:28,690 INFO L175 Difference]: Start difference. First operand has 355 places, 285 transitions, 2445 flow. Second operand 11 states and 135 transitions. [2024-06-03 19:07:28,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 304 transitions, 3143 flow [2024-06-03 19:07:29,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 304 transitions, 3037 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-03 19:07:29,014 INFO L231 Difference]: Finished difference. Result has 355 places, 286 transitions, 2457 flow [2024-06-03 19:07:29,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2457, PETRI_PLACES=355, PETRI_TRANSITIONS=286} [2024-06-03 19:07:29,014 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-03 19:07:29,014 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 286 transitions, 2457 flow [2024-06-03 19:07:29,014 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) [2024-06-03 19:07:29,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:29,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:29,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-03 19:07:29,015 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)] === [2024-06-03 19:07:29,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:29,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1942671033, now seen corresponding path program 2 times [2024-06-03 19:07:29,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:29,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030730096] [2024-06-03 19:07:29,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:29,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:30,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:30,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030730096] [2024-06-03 19:07:30,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030730096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:30,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:30,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:07:30,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840240332] [2024-06-03 19:07:30,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:30,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:07:30,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:30,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:07:30,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:07:30,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:30,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 286 transitions, 2457 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) [2024-06-03 19:07:30,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:30,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:30,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:31,535 INFO L124 PetriNetUnfolderBase]: 570/1113 cut-off events. [2024-06-03 19:07:31,536 INFO L125 PetriNetUnfolderBase]: For 139337/139337 co-relation queries the response was YES. [2024-06-03 19:07:31,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6008 conditions, 1113 events. 570/1113 cut-off events. For 139337/139337 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6513 event pairs, 43 based on Foata normal form. 8/1119 useless extension candidates. Maximal degree in co-relation 5841. Up to 956 conditions per place. [2024-06-03 19:07:31,547 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 271 selfloop transitions, 24 changer transitions 9/307 dead transitions. [2024-06-03 19:07:31,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 307 transitions, 3173 flow [2024-06-03 19:07:31,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:07:31,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:07:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-03 19:07:31,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:07:31,548 INFO L175 Difference]: Start difference. First operand has 355 places, 286 transitions, 2457 flow. Second operand 12 states and 144 transitions. [2024-06-03 19:07:31,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 307 transitions, 3173 flow [2024-06-03 19:07:31,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 307 transitions, 3065 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-03 19:07:31,829 INFO L231 Difference]: Finished difference. Result has 358 places, 283 transitions, 2376 flow [2024-06-03 19:07:31,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2376, PETRI_PLACES=358, PETRI_TRANSITIONS=283} [2024-06-03 19:07:31,830 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-03 19:07:31,830 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 283 transitions, 2376 flow [2024-06-03 19:07:31,830 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) [2024-06-03 19:07:31,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:31,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:31,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-03 19:07:31,830 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)] === [2024-06-03 19:07:31,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:31,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1936414923, now seen corresponding path program 3 times [2024-06-03 19:07:31,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:31,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476491971] [2024-06-03 19:07:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:31,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:33,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:33,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476491971] [2024-06-03 19:07:33,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476491971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:33,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:33,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:07:33,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233636638] [2024-06-03 19:07:33,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:33,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:07:33,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:07:33,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:07:33,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:33,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 283 transitions, 2376 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) [2024-06-03 19:07:33,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:33,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:33,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:33,905 INFO L124 PetriNetUnfolderBase]: 565/1110 cut-off events. [2024-06-03 19:07:33,906 INFO L125 PetriNetUnfolderBase]: For 140471/140471 co-relation queries the response was YES. [2024-06-03 19:07:33,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5873 conditions, 1110 events. 565/1110 cut-off events. For 140471/140471 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6494 event pairs, 45 based on Foata normal form. 8/1116 useless extension candidates. Maximal degree in co-relation 5705. Up to 939 conditions per place. [2024-06-03 19:07:33,919 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 267 selfloop transitions, 21 changer transitions 13/304 dead transitions. [2024-06-03 19:07:33,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 304 transitions, 3086 flow [2024-06-03 19:07:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:07:33,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:07:33,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-03 19:07:33,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-03 19:07:33,920 INFO L175 Difference]: Start difference. First operand has 358 places, 283 transitions, 2376 flow. Second operand 12 states and 145 transitions. [2024-06-03 19:07:33,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 304 transitions, 3086 flow [2024-06-03 19:07:34,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 304 transitions, 3034 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:07:34,239 INFO L231 Difference]: Finished difference. Result has 356 places, 277 transitions, 2322 flow [2024-06-03 19:07:34,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2322, PETRI_PLACES=356, PETRI_TRANSITIONS=277} [2024-06-03 19:07:34,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-03 19:07:34,240 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 277 transitions, 2322 flow [2024-06-03 19:07:34,240 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) [2024-06-03 19:07:34,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:34,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:34,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-03 19:07:34,240 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)] === [2024-06-03 19:07:34,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:34,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1936175913, now seen corresponding path program 4 times [2024-06-03 19:07:34,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:34,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831737582] [2024-06-03 19:07:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:34,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:35,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:35,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831737582] [2024-06-03 19:07:35,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831737582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:35,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:35,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:07:35,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314873465] [2024-06-03 19:07:35,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:35,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:07:35,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:35,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:07:35,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:07:36,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:36,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 277 transitions, 2322 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) [2024-06-03 19:07:36,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:36,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:36,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:36,542 INFO L124 PetriNetUnfolderBase]: 549/1080 cut-off events. [2024-06-03 19:07:36,542 INFO L125 PetriNetUnfolderBase]: For 120113/120113 co-relation queries the response was YES. [2024-06-03 19:07:36,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5724 conditions, 1080 events. 549/1080 cut-off events. For 120113/120113 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6278 event pairs, 39 based on Foata normal form. 6/1084 useless extension candidates. Maximal degree in co-relation 5557. Up to 926 conditions per place. [2024-06-03 19:07:36,556 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 265 selfloop transitions, 19 changer transitions 11/298 dead transitions. [2024-06-03 19:07:36,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 298 transitions, 3006 flow [2024-06-03 19:07:36,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:07:36,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:07:36,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-03 19:07:36,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 19:07:36,557 INFO L175 Difference]: Start difference. First operand has 356 places, 277 transitions, 2322 flow. Second operand 12 states and 141 transitions. [2024-06-03 19:07:36,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 298 transitions, 3006 flow [2024-06-03 19:07:36,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 298 transitions, 2954 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-03 19:07:36,914 INFO L231 Difference]: Finished difference. Result has 350 places, 273 transitions, 2278 flow [2024-06-03 19:07:36,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2278, PETRI_PLACES=350, PETRI_TRANSITIONS=273} [2024-06-03 19:07:36,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-03 19:07:36,914 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 273 transitions, 2278 flow [2024-06-03 19:07:36,914 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) [2024-06-03 19:07:36,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:36,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:36,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-03 19:07:36,915 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)] === [2024-06-03 19:07:36,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:36,915 INFO L85 PathProgramCache]: Analyzing trace with hash 46150369, now seen corresponding path program 10 times [2024-06-03 19:07:36,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:36,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497526334] [2024-06-03 19:07:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:36,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:38,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:38,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497526334] [2024-06-03 19:07:38,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497526334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:38,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:38,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:38,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986723297] [2024-06-03 19:07:38,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:38,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:38,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:38,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:38,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:38,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:38,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 273 transitions, 2278 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) [2024-06-03 19:07:38,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:38,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:38,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:38,805 INFO L124 PetriNetUnfolderBase]: 549/1076 cut-off events. [2024-06-03 19:07:38,805 INFO L125 PetriNetUnfolderBase]: For 144319/144319 co-relation queries the response was YES. [2024-06-03 19:07:38,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5765 conditions, 1076 events. 549/1076 cut-off events. For 144319/144319 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6249 event pairs, 45 based on Foata normal form. 10/1084 useless extension candidates. Maximal degree in co-relation 5601. Up to 827 conditions per place. [2024-06-03 19:07:38,816 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 55 changer transitions 6/291 dead transitions. [2024-06-03 19:07:38,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 291 transitions, 2996 flow [2024-06-03 19:07:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:38,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-03 19:07:38,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-03 19:07:38,817 INFO L175 Difference]: Start difference. First operand has 350 places, 273 transitions, 2278 flow. Second operand 11 states and 144 transitions. [2024-06-03 19:07:38,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 291 transitions, 2996 flow [2024-06-03 19:07:39,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 291 transitions, 2930 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-03 19:07:39,136 INFO L231 Difference]: Finished difference. Result has 343 places, 271 transitions, 2363 flow [2024-06-03 19:07:39,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2363, PETRI_PLACES=343, PETRI_TRANSITIONS=271} [2024-06-03 19:07:39,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-03 19:07:39,136 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 271 transitions, 2363 flow [2024-06-03 19:07:39,137 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) [2024-06-03 19:07:39,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:39,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:39,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-03 19:07:39,137 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)] === [2024-06-03 19:07:39,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:39,137 INFO L85 PathProgramCache]: Analyzing trace with hash 39894259, now seen corresponding path program 11 times [2024-06-03 19:07:39,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:39,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837204257] [2024-06-03 19:07:39,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:39,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:40,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:40,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837204257] [2024-06-03 19:07:40,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837204257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:40,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:40,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:40,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578490480] [2024-06-03 19:07:40,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:40,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:40,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:40,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:40,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:40,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:40,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 271 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) [2024-06-03 19:07:40,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:40,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:40,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:41,116 INFO L124 PetriNetUnfolderBase]: 536/1047 cut-off events. [2024-06-03 19:07:41,117 INFO L125 PetriNetUnfolderBase]: For 86133/86133 co-relation queries the response was YES. [2024-06-03 19:07:41,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5688 conditions, 1047 events. 536/1047 cut-off events. For 86133/86133 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6044 event pairs, 43 based on Foata normal form. 2/1047 useless extension candidates. Maximal degree in co-relation 5527. Up to 873 conditions per place. [2024-06-03 19:07:41,128 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 44 changer transitions 0/286 dead transitions. [2024-06-03 19:07:41,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 286 transitions, 3011 flow [2024-06-03 19:07:41,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-03 19:07:41,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-03 19:07:41,129 INFO L175 Difference]: Start difference. First operand has 343 places, 271 transitions, 2363 flow. Second operand 11 states and 136 transitions. [2024-06-03 19:07:41,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 286 transitions, 3011 flow [2024-06-03 19:07:41,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 286 transitions, 2831 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-03 19:07:41,460 INFO L231 Difference]: Finished difference. Result has 343 places, 272 transitions, 2325 flow [2024-06-03 19:07:41,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2325, PETRI_PLACES=343, PETRI_TRANSITIONS=272} [2024-06-03 19:07:41,460 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-03 19:07:41,460 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 272 transitions, 2325 flow [2024-06-03 19:07:41,460 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) [2024-06-03 19:07:41,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:41,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:41,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-03 19:07:41,461 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)] === [2024-06-03 19:07:41,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:41,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1510877307, now seen corresponding path program 12 times [2024-06-03 19:07:41,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:41,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460375577] [2024-06-03 19:07:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:41,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:42,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:42,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:42,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460375577] [2024-06-03 19:07:42,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460375577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:42,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:42,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:42,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313786092] [2024-06-03 19:07:42,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:42,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:42,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:42,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:42,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:42,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:42,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 272 transitions, 2325 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) [2024-06-03 19:07:42,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:42,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:42,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:43,171 INFO L124 PetriNetUnfolderBase]: 569/1114 cut-off events. [2024-06-03 19:07:43,171 INFO L125 PetriNetUnfolderBase]: For 157716/157716 co-relation queries the response was YES. [2024-06-03 19:07:43,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7275 conditions, 1114 events. 569/1114 cut-off events. For 157716/157716 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6469 event pairs, 56 based on Foata normal form. 2/1114 useless extension candidates. Maximal degree in co-relation 7113. Up to 823 conditions per place. [2024-06-03 19:07:43,183 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 63 changer transitions 0/293 dead transitions. [2024-06-03 19:07:43,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 293 transitions, 3331 flow [2024-06-03 19:07:43,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-03 19:07:43,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-03 19:07:43,184 INFO L175 Difference]: Start difference. First operand has 343 places, 272 transitions, 2325 flow. Second operand 11 states and 145 transitions. [2024-06-03 19:07:43,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 293 transitions, 3331 flow [2024-06-03 19:07:43,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 293 transitions, 3199 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-03 19:07:43,704 INFO L231 Difference]: Finished difference. Result has 345 places, 274 transitions, 2425 flow [2024-06-03 19:07:43,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2425, PETRI_PLACES=345, PETRI_TRANSITIONS=274} [2024-06-03 19:07:43,704 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-03 19:07:43,704 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 274 transitions, 2425 flow [2024-06-03 19:07:43,705 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) [2024-06-03 19:07:43,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:43,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:43,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-03 19:07:43,705 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)] === [2024-06-03 19:07:43,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:43,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1738956087, now seen corresponding path program 13 times [2024-06-03 19:07:43,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:43,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407095805] [2024-06-03 19:07:43,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:43,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:44,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:44,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:44,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407095805] [2024-06-03 19:07:44,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407095805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:44,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:44,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:44,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885682221] [2024-06-03 19:07:44,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:44,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:44,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:44,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:44,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:45,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:45,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 274 transitions, 2425 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) [2024-06-03 19:07:45,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:45,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:45,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:45,519 INFO L124 PetriNetUnfolderBase]: 556/1091 cut-off events. [2024-06-03 19:07:45,519 INFO L125 PetriNetUnfolderBase]: For 145317/145317 co-relation queries the response was YES. [2024-06-03 19:07:45,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5932 conditions, 1091 events. 556/1091 cut-off events. For 145317/145317 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6352 event pairs, 49 based on Foata normal form. 10/1099 useless extension candidates. Maximal degree in co-relation 5769. Up to 847 conditions per place. [2024-06-03 19:07:45,532 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 56 changer transitions 7/291 dead transitions. [2024-06-03 19:07:45,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 291 transitions, 3087 flow [2024-06-03 19:07:45,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:45,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:45,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-03 19:07:45,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-03 19:07:45,533 INFO L175 Difference]: Start difference. First operand has 345 places, 274 transitions, 2425 flow. Second operand 11 states and 142 transitions. [2024-06-03 19:07:45,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 291 transitions, 3087 flow [2024-06-03 19:07:45,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 291 transitions, 2883 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-03 19:07:45,828 INFO L231 Difference]: Finished difference. Result has 348 places, 270 transitions, 2305 flow [2024-06-03 19:07:45,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2305, PETRI_PLACES=348, PETRI_TRANSITIONS=270} [2024-06-03 19:07:45,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-03 19:07:45,829 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 270 transitions, 2305 flow [2024-06-03 19:07:45,829 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) [2024-06-03 19:07:45,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:45,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:45,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-03 19:07:45,829 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)] === [2024-06-03 19:07:45,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:45,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1843671565, now seen corresponding path program 14 times [2024-06-03 19:07:45,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:45,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111496388] [2024-06-03 19:07:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:45,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:47,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111496388] [2024-06-03 19:07:47,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111496388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:47,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:47,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:47,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422415309] [2024-06-03 19:07:47,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:47,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:47,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:47,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:47,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:47,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:47,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 270 transitions, 2305 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) [2024-06-03 19:07:47,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:47,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:47,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:47,550 INFO L124 PetriNetUnfolderBase]: 549/1084 cut-off events. [2024-06-03 19:07:47,550 INFO L125 PetriNetUnfolderBase]: For 128319/128319 co-relation queries the response was YES. [2024-06-03 19:07:47,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5749 conditions, 1084 events. 549/1084 cut-off events. For 128319/128319 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6304 event pairs, 47 based on Foata normal form. 8/1090 useless extension candidates. Maximal degree in co-relation 5585. Up to 929 conditions per place. [2024-06-03 19:07:47,563 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 255 selfloop transitions, 19 changer transitions 11/288 dead transitions. [2024-06-03 19:07:47,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 288 transitions, 2975 flow [2024-06-03 19:07:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:47,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 19:07:47,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-03 19:07:47,564 INFO L175 Difference]: Start difference. First operand has 348 places, 270 transitions, 2305 flow. Second operand 11 states and 130 transitions. [2024-06-03 19:07:47,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 288 transitions, 2975 flow [2024-06-03 19:07:47,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 288 transitions, 2835 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-03 19:07:47,930 INFO L231 Difference]: Finished difference. Result has 347 places, 267 transitions, 2180 flow [2024-06-03 19:07:47,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2180, PETRI_PLACES=347, PETRI_TRANSITIONS=267} [2024-06-03 19:07:47,931 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-03 19:07:47,931 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 267 transitions, 2180 flow [2024-06-03 19:07:47,931 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) [2024-06-03 19:07:47,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:47,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:47,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-03 19:07:47,932 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)] === [2024-06-03 19:07:47,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:47,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1848255535, now seen corresponding path program 15 times [2024-06-03 19:07:47,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:47,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980657330] [2024-06-03 19:07:47,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:47,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:49,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:49,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980657330] [2024-06-03 19:07:49,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980657330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:49,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:49,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:49,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339828417] [2024-06-03 19:07:49,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:49,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:49,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:49,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:49,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:49,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:49,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 267 transitions, 2180 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) [2024-06-03 19:07:49,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:49,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:49,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:49,741 INFO L124 PetriNetUnfolderBase]: 542/1067 cut-off events. [2024-06-03 19:07:49,741 INFO L125 PetriNetUnfolderBase]: For 130395/130395 co-relation queries the response was YES. [2024-06-03 19:07:49,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5587 conditions, 1067 events. 542/1067 cut-off events. For 130395/130395 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6160 event pairs, 41 based on Foata normal form. 8/1073 useless extension candidates. Maximal degree in co-relation 5423. Up to 911 conditions per place. [2024-06-03 19:07:49,753 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 252 selfloop transitions, 17 changer transitions 14/286 dead transitions. [2024-06-03 19:07:49,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 286 transitions, 2848 flow [2024-06-03 19:07:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 19:07:49,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-03 19:07:49,754 INFO L175 Difference]: Start difference. First operand has 347 places, 267 transitions, 2180 flow. Second operand 11 states and 130 transitions. [2024-06-03 19:07:49,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 286 transitions, 2848 flow [2024-06-03 19:07:50,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 286 transitions, 2804 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 19:07:50,126 INFO L231 Difference]: Finished difference. Result has 343 places, 263 transitions, 2151 flow [2024-06-03 19:07:50,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2151, PETRI_PLACES=343, PETRI_TRANSITIONS=263} [2024-06-03 19:07:50,127 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-03 19:07:50,127 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 263 transitions, 2151 flow [2024-06-03 19:07:50,127 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) [2024-06-03 19:07:50,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:50,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:50,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-03 19:07:50,127 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)] === [2024-06-03 19:07:50,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:50,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1677260155, now seen corresponding path program 16 times [2024-06-03 19:07:50,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:50,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377071925] [2024-06-03 19:07:50,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:50,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:51,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:51,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377071925] [2024-06-03 19:07:51,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377071925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:51,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:51,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:51,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866004678] [2024-06-03 19:07:51,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:51,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:51,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:51,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:51,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:51,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:51,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 263 transitions, 2151 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) [2024-06-03 19:07:51,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:51,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:51,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:52,088 INFO L124 PetriNetUnfolderBase]: 523/1024 cut-off events. [2024-06-03 19:07:52,088 INFO L125 PetriNetUnfolderBase]: For 89365/89365 co-relation queries the response was YES. [2024-06-03 19:07:52,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5443 conditions, 1024 events. 523/1024 cut-off events. For 89365/89365 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 5871 event pairs, 43 based on Foata normal form. 2/1024 useless extension candidates. Maximal degree in co-relation 5281. Up to 886 conditions per place. [2024-06-03 19:07:52,100 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 241 selfloop transitions, 34 changer transitions 0/278 dead transitions. [2024-06-03 19:07:52,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 278 transitions, 2785 flow [2024-06-03 19:07:52,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:52,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 19:07:52,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-03 19:07:52,101 INFO L175 Difference]: Start difference. First operand has 343 places, 263 transitions, 2151 flow. Second operand 11 states and 133 transitions. [2024-06-03 19:07:52,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 278 transitions, 2785 flow [2024-06-03 19:07:52,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 278 transitions, 2745 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 19:07:52,396 INFO L231 Difference]: Finished difference. Result has 338 places, 264 transitions, 2235 flow [2024-06-03 19:07:52,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2235, PETRI_PLACES=338, PETRI_TRANSITIONS=264} [2024-06-03 19:07:52,396 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-03 19:07:52,396 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 264 transitions, 2235 flow [2024-06-03 19:07:52,397 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) [2024-06-03 19:07:52,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:52,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:52,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-03 19:07:52,397 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)] === [2024-06-03 19:07:52,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:52,397 INFO L85 PathProgramCache]: Analyzing trace with hash -206277107, now seen corresponding path program 17 times [2024-06-03 19:07:52,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:52,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332275252] [2024-06-03 19:07:52,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:52,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:53,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:53,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332275252] [2024-06-03 19:07:53,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332275252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:53,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:53,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:53,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069522152] [2024-06-03 19:07:53,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:53,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:53,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:53,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:53,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:54,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:54,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 264 transitions, 2235 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) [2024-06-03 19:07:54,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:54,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:54,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:54,551 INFO L124 PetriNetUnfolderBase]: 556/1091 cut-off events. [2024-06-03 19:07:54,551 INFO L125 PetriNetUnfolderBase]: For 158002/158002 co-relation queries the response was YES. [2024-06-03 19:07:54,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7169 conditions, 1091 events. 556/1091 cut-off events. For 158002/158002 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6323 event pairs, 54 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 7009. Up to 880 conditions per place. [2024-06-03 19:07:54,563 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 36 changer transitions 0/285 dead transitions. [2024-06-03 19:07:54,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 285 transitions, 3229 flow [2024-06-03 19:07:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-03 19:07:54,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-03 19:07:54,564 INFO L175 Difference]: Start difference. First operand has 338 places, 264 transitions, 2235 flow. Second operand 11 states and 138 transitions. [2024-06-03 19:07:54,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 285 transitions, 3229 flow [2024-06-03 19:07:55,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 285 transitions, 3115 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-03 19:07:55,096 INFO L231 Difference]: Finished difference. Result has 340 places, 266 transitions, 2303 flow [2024-06-03 19:07:55,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2303, PETRI_PLACES=340, PETRI_TRANSITIONS=266} [2024-06-03 19:07:55,096 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-03 19:07:55,096 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 266 transitions, 2303 flow [2024-06-03 19:07:55,096 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) [2024-06-03 19:07:55,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:55,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:55,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-03 19:07:55,097 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)] === [2024-06-03 19:07:55,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash -199843367, now seen corresponding path program 18 times [2024-06-03 19:07:55,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:55,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444172938] [2024-06-03 19:07:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:55,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:56,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:56,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:56,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444172938] [2024-06-03 19:07:56,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444172938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:56,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:56,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:07:56,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243017171] [2024-06-03 19:07:56,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:56,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:07:56,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:56,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:07:56,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:07:56,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:56,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 266 transitions, 2303 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) [2024-06-03 19:07:56,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:56,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:56,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:56,806 INFO L124 PetriNetUnfolderBase]: 543/1068 cut-off events. [2024-06-03 19:07:56,806 INFO L125 PetriNetUnfolderBase]: For 145526/145526 co-relation queries the response was YES. [2024-06-03 19:07:56,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5784 conditions, 1068 events. 543/1068 cut-off events. For 145526/145526 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6201 event pairs, 47 based on Foata normal form. 10/1076 useless extension candidates. Maximal degree in co-relation 5623. Up to 898 conditions per place. [2024-06-03 19:07:56,818 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 244 selfloop transitions, 30 changer transitions 6/283 dead transitions. [2024-06-03 19:07:56,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 283 transitions, 2949 flow [2024-06-03 19:07:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:56,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 19:07:56,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 19:07:56,819 INFO L175 Difference]: Start difference. First operand has 340 places, 266 transitions, 2303 flow. Second operand 11 states and 135 transitions. [2024-06-03 19:07:56,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 283 transitions, 2949 flow [2024-06-03 19:07:57,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 283 transitions, 2811 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-03 19:07:57,134 INFO L231 Difference]: Finished difference. Result has 344 places, 263 transitions, 2204 flow [2024-06-03 19:07:57,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2204, PETRI_PLACES=344, PETRI_TRANSITIONS=263} [2024-06-03 19:07:57,135 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-03 19:07:57,135 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 263 transitions, 2204 flow [2024-06-03 19:07:57,135 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) [2024-06-03 19:07:57,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:57,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:57,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-03 19:07:57,135 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)] === [2024-06-03 19:07:57,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:57,135 INFO L85 PathProgramCache]: Analyzing trace with hash -206092533, now seen corresponding path program 5 times [2024-06-03 19:07:57,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:57,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631636028] [2024-06-03 19:07:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:57,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:07:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:07:58,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:07:58,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631636028] [2024-06-03 19:07:58,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631636028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:07:58,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:07:58,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:07:58,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476198854] [2024-06-03 19:07:58,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:07:58,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:07:58,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:07:58,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:07:58,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:07:58,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:07:58,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 263 transitions, 2204 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) [2024-06-03 19:07:58,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:07:58,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:07:58,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:07:59,336 INFO L124 PetriNetUnfolderBase]: 538/1063 cut-off events. [2024-06-03 19:07:59,337 INFO L125 PetriNetUnfolderBase]: For 132059/132059 co-relation queries the response was YES. [2024-06-03 19:07:59,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5615 conditions, 1063 events. 538/1063 cut-off events. For 132059/132059 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6175 event pairs, 51 based on Foata normal form. 8/1069 useless extension candidates. Maximal degree in co-relation 5452. Up to 890 conditions per place. [2024-06-03 19:07:59,348 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 241 selfloop transitions, 24 changer transitions 12/280 dead transitions. [2024-06-03 19:07:59,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 280 transitions, 2844 flow [2024-06-03 19:07:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:07:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:07:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-03 19:07:59,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-03 19:07:59,349 INFO L175 Difference]: Start difference. First operand has 344 places, 263 transitions, 2204 flow. Second operand 11 states and 136 transitions. [2024-06-03 19:07:59,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 280 transitions, 2844 flow [2024-06-03 19:07:59,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 280 transitions, 2751 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 19:07:59,712 INFO L231 Difference]: Finished difference. Result has 343 places, 257 transitions, 2115 flow [2024-06-03 19:07:59,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2115, PETRI_PLACES=343, PETRI_TRANSITIONS=257} [2024-06-03 19:07:59,712 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-03 19:07:59,712 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 257 transitions, 2115 flow [2024-06-03 19:07:59,712 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) [2024-06-03 19:07:59,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:07:59,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:07:59,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-03 19:07:59,713 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)] === [2024-06-03 19:07:59,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:07:59,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1670758091, now seen corresponding path program 6 times [2024-06-03 19:07:59,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:07:59,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488127609] [2024-06-03 19:07:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:07:59,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:07:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:01,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:01,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488127609] [2024-06-03 19:08:01,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488127609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:01,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:01,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:08:01,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571893564] [2024-06-03 19:08:01,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:01,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:08:01,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:01,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:08:01,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:08:01,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:01,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 257 transitions, 2115 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) [2024-06-03 19:08:01,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:01,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:01,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:01,973 INFO L124 PetriNetUnfolderBase]: 544/1081 cut-off events. [2024-06-03 19:08:01,973 INFO L125 PetriNetUnfolderBase]: For 175553/175553 co-relation queries the response was YES. [2024-06-03 19:08:01,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6633 conditions, 1081 events. 544/1081 cut-off events. For 175553/175553 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6274 event pairs, 55 based on Foata normal form. 6/1085 useless extension candidates. Maximal degree in co-relation 6470. Up to 876 conditions per place. [2024-06-03 19:08:01,985 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 23 changer transitions 7/279 dead transitions. [2024-06-03 19:08:01,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 279 transitions, 3041 flow [2024-06-03 19:08:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:08:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:08:01,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-03 19:08:01,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-03 19:08:01,986 INFO L175 Difference]: Start difference. First operand has 343 places, 257 transitions, 2115 flow. Second operand 12 states and 145 transitions. [2024-06-03 19:08:01,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 279 transitions, 3041 flow [2024-06-03 19:08:02,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 279 transitions, 2971 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-03 19:08:02,390 INFO L231 Difference]: Finished difference. Result has 337 places, 254 transitions, 2080 flow [2024-06-03 19:08:02,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2080, PETRI_PLACES=337, PETRI_TRANSITIONS=254} [2024-06-03 19:08:02,391 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-03 19:08:02,391 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 254 transitions, 2080 flow [2024-06-03 19:08:02,391 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) [2024-06-03 19:08:02,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:02,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:02,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-03 19:08:02,392 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)] === [2024-06-03 19:08:02,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:02,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1517317991, now seen corresponding path program 7 times [2024-06-03 19:08:02,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:02,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171147436] [2024-06-03 19:08:02,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:02,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:04,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171147436] [2024-06-03 19:08:04,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171147436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:04,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:04,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:08:04,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194523588] [2024-06-03 19:08:04,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:04,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:08:04,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:04,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:08:04,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:08:04,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:04,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 254 transitions, 2080 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) [2024-06-03 19:08:04,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:04,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:04,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:05,006 INFO L124 PetriNetUnfolderBase]: 541/1076 cut-off events. [2024-06-03 19:08:05,006 INFO L125 PetriNetUnfolderBase]: For 182574/182574 co-relation queries the response was YES. [2024-06-03 19:08:05,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6556 conditions, 1076 events. 541/1076 cut-off events. For 182574/182574 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6257 event pairs, 61 based on Foata normal form. 8/1082 useless extension candidates. Maximal degree in co-relation 6396. Up to 878 conditions per place. [2024-06-03 19:08:05,021 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 226 selfloop transitions, 36 changer transitions 7/272 dead transitions. [2024-06-03 19:08:05,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 272 transitions, 2706 flow [2024-06-03 19:08:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:08:05,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:08:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-03 19:08:05,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-03 19:08:05,022 INFO L175 Difference]: Start difference. First operand has 337 places, 254 transitions, 2080 flow. Second operand 12 states and 148 transitions. [2024-06-03 19:08:05,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 272 transitions, 2706 flow [2024-06-03 19:08:05,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 272 transitions, 2656 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-03 19:08:05,430 INFO L231 Difference]: Finished difference. Result has 335 places, 251 transitions, 2087 flow [2024-06-03 19:08:05,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2087, PETRI_PLACES=335, PETRI_TRANSITIONS=251} [2024-06-03 19:08:05,430 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-03 19:08:05,430 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 251 transitions, 2087 flow [2024-06-03 19:08:05,430 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) [2024-06-03 19:08:05,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:05,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:05,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-03 19:08:05,431 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)] === [2024-06-03 19:08:05,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:05,431 INFO L85 PathProgramCache]: Analyzing trace with hash -199836423, now seen corresponding path program 8 times [2024-06-03 19:08:05,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:05,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255009343] [2024-06-03 19:08:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:05,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:07,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:07,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255009343] [2024-06-03 19:08:07,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255009343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:07,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:07,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:08:07,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400871637] [2024-06-03 19:08:07,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:07,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:08:07,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:07,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:08:07,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:08:07,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:07,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 251 transitions, 2087 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) [2024-06-03 19:08:07,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:07,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:07,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:07,851 INFO L124 PetriNetUnfolderBase]: 514/1019 cut-off events. [2024-06-03 19:08:07,851 INFO L125 PetriNetUnfolderBase]: For 124663/124663 co-relation queries the response was YES. [2024-06-03 19:08:07,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5369 conditions, 1019 events. 514/1019 cut-off events. For 124663/124663 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 5888 event pairs, 47 based on Foata normal form. 8/1025 useless extension candidates. Maximal degree in co-relation 5210. Up to 845 conditions per place. [2024-06-03 19:08:07,861 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 235 selfloop transitions, 22 changer transitions 7/267 dead transitions. [2024-06-03 19:08:07,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 267 transitions, 2697 flow [2024-06-03 19:08:07,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:08:07,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:08:07,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-03 19:08:07,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:08:07,862 INFO L175 Difference]: Start difference. First operand has 335 places, 251 transitions, 2087 flow. Second operand 12 states and 138 transitions. [2024-06-03 19:08:07,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 267 transitions, 2697 flow [2024-06-03 19:08:08,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 267 transitions, 2625 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:08:08,136 INFO L231 Difference]: Finished difference. Result has 334 places, 248 transitions, 2038 flow [2024-06-03 19:08:08,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2038, PETRI_PLACES=334, PETRI_TRANSITIONS=248} [2024-06-03 19:08:08,137 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-03 19:08:08,137 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 248 transitions, 2038 flow [2024-06-03 19:08:08,137 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) [2024-06-03 19:08:08,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:08,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:08,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-03 19:08:08,137 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)] === [2024-06-03 19:08:08,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:08,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1511061881, now seen corresponding path program 9 times [2024-06-03 19:08:08,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:08,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863066528] [2024-06-03 19:08:08,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:08,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:10,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:10,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863066528] [2024-06-03 19:08:10,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863066528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:10,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:10,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:08:10,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469738992] [2024-06-03 19:08:10,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:10,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:08:10,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:10,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:08:10,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:08:10,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:10,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 248 transitions, 2038 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) [2024-06-03 19:08:10,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:10,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:10,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:10,893 INFO L124 PetriNetUnfolderBase]: 509/1016 cut-off events. [2024-06-03 19:08:10,893 INFO L125 PetriNetUnfolderBase]: For 122488/122488 co-relation queries the response was YES. [2024-06-03 19:08:10,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5289 conditions, 1016 events. 509/1016 cut-off events. For 122488/122488 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 5894 event pairs, 49 based on Foata normal form. 8/1022 useless extension candidates. Maximal degree in co-relation 5131. Up to 824 conditions per place. [2024-06-03 19:08:10,904 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 220 selfloop transitions, 34 changer transitions 9/266 dead transitions. [2024-06-03 19:08:10,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 266 transitions, 2652 flow [2024-06-03 19:08:10,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:08:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:08:10,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-03 19:08:10,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-03 19:08:10,905 INFO L175 Difference]: Start difference. First operand has 334 places, 248 transitions, 2038 flow. Second operand 12 states and 146 transitions. [2024-06-03 19:08:10,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 266 transitions, 2652 flow [2024-06-03 19:08:11,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 266 transitions, 2598 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 19:08:11,198 INFO L231 Difference]: Finished difference. Result has 331 places, 245 transitions, 2036 flow [2024-06-03 19:08:11,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2036, PETRI_PLACES=331, PETRI_TRANSITIONS=245} [2024-06-03 19:08:11,198 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-03 19:08:11,198 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 245 transitions, 2036 flow [2024-06-03 19:08:11,198 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) [2024-06-03 19:08:11,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:11,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:11,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-03 19:08:11,199 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)] === [2024-06-03 19:08:11,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:11,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1517557001, now seen corresponding path program 10 times [2024-06-03 19:08:11,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:11,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49035640] [2024-06-03 19:08:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:11,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:12,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:12,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:12,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49035640] [2024-06-03 19:08:12,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49035640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:12,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:12,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:12,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099864109] [2024-06-03 19:08:12,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:12,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:12,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:12,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:12,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:12,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:12,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 245 transitions, 2036 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) [2024-06-03 19:08:12,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:12,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:12,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:12,997 INFO L124 PetriNetUnfolderBase]: 515/1038 cut-off events. [2024-06-03 19:08:12,997 INFO L125 PetriNetUnfolderBase]: For 144608/144608 co-relation queries the response was YES. [2024-06-03 19:08:13,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 1038 events. 515/1038 cut-off events. For 144608/144608 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6014 event pairs, 58 based on Foata normal form. 6/1042 useless extension candidates. Maximal degree in co-relation 5854. Up to 779 conditions per place. [2024-06-03 19:08:13,008 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 34 changer transitions 7/265 dead transitions. [2024-06-03 19:08:13,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 265 transitions, 2880 flow [2024-06-03 19:08:13,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:13,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-03 19:08:13,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 19:08:13,008 INFO L175 Difference]: Start difference. First operand has 331 places, 245 transitions, 2036 flow. Second operand 11 states and 143 transitions. [2024-06-03 19:08:13,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 265 transitions, 2880 flow [2024-06-03 19:08:13,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 265 transitions, 2804 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:08:13,454 INFO L231 Difference]: Finished difference. Result has 328 places, 242 transitions, 2014 flow [2024-06-03 19:08:13,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2014, PETRI_PLACES=328, PETRI_TRANSITIONS=242} [2024-06-03 19:08:13,454 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-03 19:08:13,454 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 242 transitions, 2014 flow [2024-06-03 19:08:13,454 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) [2024-06-03 19:08:13,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:13,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:13,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-03 19:08:13,454 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)] === [2024-06-03 19:08:13,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:13,455 INFO L85 PathProgramCache]: Analyzing trace with hash 276373233, now seen corresponding path program 11 times [2024-06-03 19:08:13,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:13,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880704949] [2024-06-03 19:08:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:13,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:15,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:15,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880704949] [2024-06-03 19:08:15,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880704949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:15,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:15,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:08:15,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957042173] [2024-06-03 19:08:15,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:15,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:08:15,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:08:15,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:08:15,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:15,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 242 transitions, 2014 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) [2024-06-03 19:08:15,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:15,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:15,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:15,859 INFO L124 PetriNetUnfolderBase]: 530/1067 cut-off events. [2024-06-03 19:08:15,859 INFO L125 PetriNetUnfolderBase]: For 194444/194444 co-relation queries the response was YES. [2024-06-03 19:08:15,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7084 conditions, 1067 events. 530/1067 cut-off events. For 194444/194444 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6207 event pairs, 66 based on Foata normal form. 6/1071 useless extension candidates. Maximal degree in co-relation 6928. Up to 766 conditions per place. [2024-06-03 19:08:15,869 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 212 selfloop transitions, 39 changer transitions 9/263 dead transitions. [2024-06-03 19:08:15,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 263 transitions, 2888 flow [2024-06-03 19:08:15,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:08:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:08:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-03 19:08:15,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-03 19:08:15,870 INFO L175 Difference]: Start difference. First operand has 328 places, 242 transitions, 2014 flow. Second operand 12 states and 147 transitions. [2024-06-03 19:08:15,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 263 transitions, 2888 flow [2024-06-03 19:08:16,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 263 transitions, 2797 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-03 19:08:16,304 INFO L231 Difference]: Finished difference. Result has 325 places, 239 transitions, 1989 flow [2024-06-03 19:08:16,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=313, 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=12, PETRI_FLOW=1989, PETRI_PLACES=325, PETRI_TRANSITIONS=239} [2024-06-03 19:08:16,304 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-03 19:08:16,304 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 239 transitions, 1989 flow [2024-06-03 19:08:16,304 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) [2024-06-03 19:08:16,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:16,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:16,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-03 19:08:16,304 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)] === [2024-06-03 19:08:16,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:16,305 INFO L85 PathProgramCache]: Analyzing trace with hash 267802353, now seen corresponding path program 12 times [2024-06-03 19:08:16,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:16,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077697598] [2024-06-03 19:08:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:16,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:18,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:18,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077697598] [2024-06-03 19:08:18,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077697598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:18,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:18,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:08:18,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600965022] [2024-06-03 19:08:18,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:18,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:08:18,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:18,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:08:18,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:08:18,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:18,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 239 transitions, 1989 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) [2024-06-03 19:08:18,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:18,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:18,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:18,657 INFO L124 PetriNetUnfolderBase]: 525/1064 cut-off events. [2024-06-03 19:08:18,658 INFO L125 PetriNetUnfolderBase]: For 228827/228827 co-relation queries the response was YES. [2024-06-03 19:08:18,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6810 conditions, 1064 events. 525/1064 cut-off events. For 228827/228827 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6180 event pairs, 77 based on Foata normal form. 14/1076 useless extension candidates. Maximal degree in co-relation 6655. Up to 842 conditions per place. [2024-06-03 19:08:18,668 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 31 changer transitions 13/257 dead transitions. [2024-06-03 19:08:18,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 257 transitions, 2583 flow [2024-06-03 19:08:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:08:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:08:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-03 19:08:18,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-03 19:08:18,669 INFO L175 Difference]: Start difference. First operand has 325 places, 239 transitions, 1989 flow. Second operand 12 states and 146 transitions. [2024-06-03 19:08:18,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 257 transitions, 2583 flow [2024-06-03 19:08:19,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 257 transitions, 2503 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:08:19,132 INFO L231 Difference]: Finished difference. Result has 322 places, 233 transitions, 1932 flow [2024-06-03 19:08:19,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1932, PETRI_PLACES=322, PETRI_TRANSITIONS=233} [2024-06-03 19:08:19,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-03 19:08:19,132 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 233 transitions, 1932 flow [2024-06-03 19:08:19,133 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) [2024-06-03 19:08:19,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:19,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:19,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-03 19:08:19,133 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)] === [2024-06-03 19:08:19,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:19,133 INFO L85 PathProgramCache]: Analyzing trace with hash 276084933, now seen corresponding path program 13 times [2024-06-03 19:08:19,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:19,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219166917] [2024-06-03 19:08:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:19,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:20,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:20,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:20,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219166917] [2024-06-03 19:08:20,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219166917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:20,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:20,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:20,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841898767] [2024-06-03 19:08:20,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:20,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:20,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:20,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:20,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:20,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:20,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 233 transitions, 1932 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) [2024-06-03 19:08:20,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:20,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:20,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:21,165 INFO L124 PetriNetUnfolderBase]: 486/981 cut-off events. [2024-06-03 19:08:21,165 INFO L125 PetriNetUnfolderBase]: For 134863/134863 co-relation queries the response was YES. [2024-06-03 19:08:21,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5749 conditions, 981 events. 486/981 cut-off events. For 134863/134863 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5585 event pairs, 54 based on Foata normal form. 6/985 useless extension candidates. Maximal degree in co-relation 5596. Up to 780 conditions per place. [2024-06-03 19:08:21,175 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 204 selfloop transitions, 27 changer transitions 16/250 dead transitions. [2024-06-03 19:08:21,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 250 transitions, 2502 flow [2024-06-03 19:08:21,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-03 19:08:21,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-03 19:08:21,176 INFO L175 Difference]: Start difference. First operand has 322 places, 233 transitions, 1932 flow. Second operand 11 states and 134 transitions. [2024-06-03 19:08:21,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 250 transitions, 2502 flow [2024-06-03 19:08:21,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 250 transitions, 2432 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 19:08:21,532 INFO L231 Difference]: Finished difference. Result has 315 places, 224 transitions, 1849 flow [2024-06-03 19:08:21,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1849, PETRI_PLACES=315, PETRI_TRANSITIONS=224} [2024-06-03 19:08:21,532 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 284 predicate places. [2024-06-03 19:08:21,533 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 224 transitions, 1849 flow [2024-06-03 19:08:21,533 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) [2024-06-03 19:08:21,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:21,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:21,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-03 19:08:21,533 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)] === [2024-06-03 19:08:21,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:21,534 INFO L85 PathProgramCache]: Analyzing trace with hash 89180931, now seen corresponding path program 19 times [2024-06-03 19:08:21,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:21,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358676303] [2024-06-03 19:08:21,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:21,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:23,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:23,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358676303] [2024-06-03 19:08:23,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358676303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:23,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:23,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:23,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479059291] [2024-06-03 19:08:23,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:23,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:23,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:23,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:23,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:23,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 224 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) [2024-06-03 19:08:23,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:23,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:23,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:23,712 INFO L124 PetriNetUnfolderBase]: 465/931 cut-off events. [2024-06-03 19:08:23,712 INFO L125 PetriNetUnfolderBase]: For 107853/107856 co-relation queries the response was YES. [2024-06-03 19:08:23,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5551 conditions, 931 events. 465/931 cut-off events. For 107853/107856 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5211 event pairs, 60 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 5414. Up to 683 conditions per place. [2024-06-03 19:08:23,720 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 68 changer transitions 0/237 dead transitions. [2024-06-03 19:08:23,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 237 transitions, 2397 flow [2024-06-03 19:08:23,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-03 19:08:23,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-03 19:08:23,721 INFO L175 Difference]: Start difference. First operand has 315 places, 224 transitions, 1849 flow. Second operand 11 states and 138 transitions. [2024-06-03 19:08:23,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 237 transitions, 2397 flow [2024-06-03 19:08:24,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 237 transitions, 2329 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-03 19:08:24,039 INFO L231 Difference]: Finished difference. Result has 302 places, 225 transitions, 1975 flow [2024-06-03 19:08:24,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1975, PETRI_PLACES=302, PETRI_TRANSITIONS=225} [2024-06-03 19:08:24,039 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-03 19:08:24,039 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 225 transitions, 1975 flow [2024-06-03 19:08:24,039 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) [2024-06-03 19:08:24,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:24,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:24,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-03 19:08:24,040 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)] === [2024-06-03 19:08:24,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:24,040 INFO L85 PathProgramCache]: Analyzing trace with hash 82924821, now seen corresponding path program 20 times [2024-06-03 19:08:24,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:24,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665227004] [2024-06-03 19:08:24,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:24,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:25,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:25,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665227004] [2024-06-03 19:08:25,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665227004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:25,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:25,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:25,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923662493] [2024-06-03 19:08:25,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:25,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:25,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:25,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:25,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:25,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:25,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 225 transitions, 1975 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) [2024-06-03 19:08:25,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:25,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:25,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:26,040 INFO L124 PetriNetUnfolderBase]: 469/939 cut-off events. [2024-06-03 19:08:26,041 INFO L125 PetriNetUnfolderBase]: For 101550/101553 co-relation queries the response was YES. [2024-06-03 19:08:26,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5680 conditions, 939 events. 469/939 cut-off events. For 101550/101553 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5269 event pairs, 60 based on Foata normal form. 2/936 useless extension candidates. Maximal degree in co-relation 5547. Up to 593 conditions per place. [2024-06-03 19:08:26,050 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 125 selfloop transitions, 110 changer transitions 0/238 dead transitions. [2024-06-03 19:08:26,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 238 transitions, 2525 flow [2024-06-03 19:08:26,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-03 19:08:26,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-03 19:08:26,051 INFO L175 Difference]: Start difference. First operand has 302 places, 225 transitions, 1975 flow. Second operand 11 states and 142 transitions. [2024-06-03 19:08:26,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 238 transitions, 2525 flow [2024-06-03 19:08:26,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 238 transitions, 2343 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-03 19:08:26,335 INFO L231 Difference]: Finished difference. Result has 304 places, 226 transitions, 2071 flow [2024-06-03 19:08:26,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2071, PETRI_PLACES=304, PETRI_TRANSITIONS=226} [2024-06-03 19:08:26,335 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-03 19:08:26,335 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 226 transitions, 2071 flow [2024-06-03 19:08:26,335 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) [2024-06-03 19:08:26,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:26,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:26,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-03 19:08:26,336 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)] === [2024-06-03 19:08:26,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:26,336 INFO L85 PathProgramCache]: Analyzing trace with hash -349047855, now seen corresponding path program 21 times [2024-06-03 19:08:26,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:26,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488100609] [2024-06-03 19:08:26,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:26,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:27,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:27,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488100609] [2024-06-03 19:08:27,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488100609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:27,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:27,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:27,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456158546] [2024-06-03 19:08:27,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:27,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:27,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:27,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:27,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:27,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:27,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 226 transitions, 2071 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) [2024-06-03 19:08:27,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:27,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:27,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:28,201 INFO L124 PetriNetUnfolderBase]: 485/975 cut-off events. [2024-06-03 19:08:28,202 INFO L125 PetriNetUnfolderBase]: For 147220/147223 co-relation queries the response was YES. [2024-06-03 19:08:28,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5961 conditions, 975 events. 485/975 cut-off events. For 147220/147223 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5535 event pairs, 66 based on Foata normal form. 10/980 useless extension candidates. Maximal degree in co-relation 5827. Up to 737 conditions per place. [2024-06-03 19:08:28,212 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 58 changer transitions 7/242 dead transitions. [2024-06-03 19:08:28,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 242 transitions, 2681 flow [2024-06-03 19:08:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-03 19:08:28,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-03 19:08:28,213 INFO L175 Difference]: Start difference. First operand has 304 places, 226 transitions, 2071 flow. Second operand 11 states and 141 transitions. [2024-06-03 19:08:28,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 242 transitions, 2681 flow [2024-06-03 19:08:28,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 242 transitions, 2413 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-03 19:08:28,517 INFO L231 Difference]: Finished difference. Result has 306 places, 223 transitions, 1945 flow [2024-06-03 19:08:28,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1945, PETRI_PLACES=306, PETRI_TRANSITIONS=223} [2024-06-03 19:08:28,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-03 19:08:28,518 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 223 transitions, 1945 flow [2024-06-03 19:08:28,518 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) [2024-06-03 19:08:28,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:28,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:28,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-03 19:08:28,518 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)] === [2024-06-03 19:08:28,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:28,518 INFO L85 PathProgramCache]: Analyzing trace with hash 82747191, now seen corresponding path program 22 times [2024-06-03 19:08:28,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:28,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960423765] [2024-06-03 19:08:28,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:28,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:29,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:29,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960423765] [2024-06-03 19:08:29,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960423765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:29,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:29,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:29,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711578408] [2024-06-03 19:08:29,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:29,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:29,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:29,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:29,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:30,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:30,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 223 transitions, 1945 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) [2024-06-03 19:08:30,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:30,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:30,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:30,459 INFO L124 PetriNetUnfolderBase]: 499/1003 cut-off events. [2024-06-03 19:08:30,459 INFO L125 PetriNetUnfolderBase]: For 162717/162720 co-relation queries the response was YES. [2024-06-03 19:08:30,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7192 conditions, 1003 events. 499/1003 cut-off events. For 162717/162720 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5692 event pairs, 73 based on Foata normal form. 2/1000 useless extension candidates. Maximal degree in co-relation 7057. Up to 575 conditions per place. [2024-06-03 19:08:30,468 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 128 selfloop transitions, 111 changer transitions 0/242 dead transitions. [2024-06-03 19:08:30,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 242 transitions, 2829 flow [2024-06-03 19:08:30,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:30,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-03 19:08:30,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-03 19:08:30,469 INFO L175 Difference]: Start difference. First operand has 306 places, 223 transitions, 1945 flow. Second operand 11 states and 147 transitions. [2024-06-03 19:08:30,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 242 transitions, 2829 flow [2024-06-03 19:08:30,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 242 transitions, 2652 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-03 19:08:30,921 INFO L231 Difference]: Finished difference. Result has 306 places, 225 transitions, 2108 flow [2024-06-03 19:08:30,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2108, PETRI_PLACES=306, PETRI_TRANSITIONS=225} [2024-06-03 19:08:30,922 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-03 19:08:30,922 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 225 transitions, 2108 flow [2024-06-03 19:08:30,922 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) [2024-06-03 19:08:30,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:30,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:30,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-03 19:08:30,922 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)] === [2024-06-03 19:08:30,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:30,922 INFO L85 PathProgramCache]: Analyzing trace with hash -570692895, now seen corresponding path program 23 times [2024-06-03 19:08:30,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:30,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079993645] [2024-06-03 19:08:30,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:30,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:32,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:32,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079993645] [2024-06-03 19:08:32,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079993645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:32,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:32,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:32,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960662801] [2024-06-03 19:08:32,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:32,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:32,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:32,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:32,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:32,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:32,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 225 transitions, 2108 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) [2024-06-03 19:08:32,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:32,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:32,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:33,114 INFO L124 PetriNetUnfolderBase]: 515/1039 cut-off events. [2024-06-03 19:08:33,114 INFO L125 PetriNetUnfolderBase]: For 209898/209901 co-relation queries the response was YES. [2024-06-03 19:08:33,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7500 conditions, 1039 events. 515/1039 cut-off events. For 209898/209901 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5962 event pairs, 79 based on Foata normal form. 10/1044 useless extension candidates. Maximal degree in co-relation 7365. Up to 808 conditions per place. [2024-06-03 19:08:33,124 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 178 selfloop transitions, 54 changer transitions 6/241 dead transitions. [2024-06-03 19:08:33,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 241 transitions, 2720 flow [2024-06-03 19:08:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-03 19:08:33,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 19:08:33,125 INFO L175 Difference]: Start difference. First operand has 306 places, 225 transitions, 2108 flow. Second operand 11 states and 143 transitions. [2024-06-03 19:08:33,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 241 transitions, 2720 flow [2024-06-03 19:08:33,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 241 transitions, 2419 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-03 19:08:33,591 INFO L231 Difference]: Finished difference. Result has 307 places, 223 transitions, 1958 flow [2024-06-03 19:08:33,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1958, PETRI_PLACES=307, PETRI_TRANSITIONS=223} [2024-06-03 19:08:33,592 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-03 19:08:33,592 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 223 transitions, 1958 flow [2024-06-03 19:08:33,592 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) [2024-06-03 19:08:33,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:33,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:33,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-03 19:08:33,592 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)] === [2024-06-03 19:08:33,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:33,592 INFO L85 PathProgramCache]: Analyzing trace with hash -576949005, now seen corresponding path program 24 times [2024-06-03 19:08:33,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:33,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395469466] [2024-06-03 19:08:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:33,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:35,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:35,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395469466] [2024-06-03 19:08:35,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395469466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:35,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:35,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:35,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234476947] [2024-06-03 19:08:35,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:35,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:35,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:35,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:35,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:35,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:35,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 223 transitions, 1958 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) [2024-06-03 19:08:35,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:35,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:35,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:35,711 INFO L124 PetriNetUnfolderBase]: 502/1014 cut-off events. [2024-06-03 19:08:35,712 INFO L125 PetriNetUnfolderBase]: For 166338/166341 co-relation queries the response was YES. [2024-06-03 19:08:35,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7213 conditions, 1014 events. 502/1014 cut-off events. For 166338/166341 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5780 event pairs, 79 based on Foata normal form. 2/1011 useless extension candidates. Maximal degree in co-relation 7079. Up to 849 conditions per place. [2024-06-03 19:08:35,721 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 188 selfloop transitions, 45 changer transitions 0/236 dead transitions. [2024-06-03 19:08:35,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 236 transitions, 2506 flow [2024-06-03 19:08:35,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:35,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:35,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 19:08:35,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 19:08:35,722 INFO L175 Difference]: Start difference. First operand has 307 places, 223 transitions, 1958 flow. Second operand 11 states and 135 transitions. [2024-06-03 19:08:35,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 236 transitions, 2506 flow [2024-06-03 19:08:36,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 236 transitions, 2344 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-03 19:08:36,195 INFO L231 Difference]: Finished difference. Result has 307 places, 224 transitions, 1946 flow [2024-06-03 19:08:36,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1946, PETRI_PLACES=307, PETRI_TRANSITIONS=224} [2024-06-03 19:08:36,195 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-03 19:08:36,195 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 224 transitions, 1946 flow [2024-06-03 19:08:36,196 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) [2024-06-03 19:08:36,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:36,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:36,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-03 19:08:36,196 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)] === [2024-06-03 19:08:36,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:36,196 INFO L85 PathProgramCache]: Analyzing trace with hash -577126635, now seen corresponding path program 25 times [2024-06-03 19:08:36,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:36,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274000640] [2024-06-03 19:08:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:36,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:37,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:37,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:37,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274000640] [2024-06-03 19:08:37,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274000640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:37,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:37,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:37,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221193457] [2024-06-03 19:08:37,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:37,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:37,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:37,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:37,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:38,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:38,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 224 transitions, 1946 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) [2024-06-03 19:08:38,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:38,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:38,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:38,504 INFO L124 PetriNetUnfolderBase]: 506/1022 cut-off events. [2024-06-03 19:08:38,505 INFO L125 PetriNetUnfolderBase]: For 169461/169464 co-relation queries the response was YES. [2024-06-03 19:08:38,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7251 conditions, 1022 events. 506/1022 cut-off events. For 169461/169464 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5842 event pairs, 79 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 7117. Up to 831 conditions per place. [2024-06-03 19:08:38,518 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 187 selfloop transitions, 48 changer transitions 0/238 dead transitions. [2024-06-03 19:08:38,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 238 transitions, 2502 flow [2024-06-03 19:08:38,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:38,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-03 19:08:38,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-03 19:08:38,519 INFO L175 Difference]: Start difference. First operand has 307 places, 224 transitions, 1946 flow. Second operand 11 states and 136 transitions. [2024-06-03 19:08:38,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 238 transitions, 2502 flow [2024-06-03 19:08:38,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 238 transitions, 2362 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-03 19:08:38,997 INFO L231 Difference]: Finished difference. Result has 309 places, 225 transitions, 1964 flow [2024-06-03 19:08:38,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1964, PETRI_PLACES=309, PETRI_TRANSITIONS=225} [2024-06-03 19:08:38,998 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-03 19:08:38,998 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 225 transitions, 1964 flow [2024-06-03 19:08:38,998 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) [2024-06-03 19:08:38,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:38,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:38,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-03 19:08:38,998 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)] === [2024-06-03 19:08:38,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1829983817, now seen corresponding path program 26 times [2024-06-03 19:08:38,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:38,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027943904] [2024-06-03 19:08:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:38,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:40,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:40,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027943904] [2024-06-03 19:08:40,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027943904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:40,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:40,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:40,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22883942] [2024-06-03 19:08:40,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:40,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:40,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:40,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:40,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:40,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:40,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 225 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) [2024-06-03 19:08:40,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:40,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:40,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:40,887 INFO L124 PetriNetUnfolderBase]: 518/1046 cut-off events. [2024-06-03 19:08:40,887 INFO L125 PetriNetUnfolderBase]: For 204296/204299 co-relation queries the response was YES. [2024-06-03 19:08:40,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7380 conditions, 1046 events. 518/1046 cut-off events. For 204296/204299 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6016 event pairs, 79 based on Foata normal form. 8/1049 useless extension candidates. Maximal degree in co-relation 7245. Up to 895 conditions per place. [2024-06-03 19:08:40,898 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 205 selfloop transitions, 22 changer transitions 11/241 dead transitions. [2024-06-03 19:08:40,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 241 transitions, 2540 flow [2024-06-03 19:08:40,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:40,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:08:40,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 19:08:40,899 INFO L175 Difference]: Start difference. First operand has 309 places, 225 transitions, 1964 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:08:40,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 241 transitions, 2540 flow [2024-06-03 19:08:41,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 241 transitions, 2392 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-03 19:08:41,474 INFO L231 Difference]: Finished difference. Result has 311 places, 222 transitions, 1841 flow [2024-06-03 19:08:41,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1841, PETRI_PLACES=311, PETRI_TRANSITIONS=222} [2024-06-03 19:08:41,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-06-03 19:08:41,474 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 222 transitions, 1841 flow [2024-06-03 19:08:41,474 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) [2024-06-03 19:08:41,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:41,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:41,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-03 19:08:41,474 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)] === [2024-06-03 19:08:41,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:41,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1829868497, now seen corresponding path program 27 times [2024-06-03 19:08:41,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:41,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069947198] [2024-06-03 19:08:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:41,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:42,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:42,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069947198] [2024-06-03 19:08:42,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069947198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:42,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:42,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:42,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399033625] [2024-06-03 19:08:42,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:42,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:42,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:42,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:42,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 222 transitions, 1841 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) [2024-06-03 19:08:42,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:42,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:42,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:43,186 INFO L124 PetriNetUnfolderBase]: 511/1037 cut-off events. [2024-06-03 19:08:43,186 INFO L125 PetriNetUnfolderBase]: For 206510/206513 co-relation queries the response was YES. [2024-06-03 19:08:43,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7199 conditions, 1037 events. 511/1037 cut-off events. For 206510/206513 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5958 event pairs, 77 based on Foata normal form. 8/1040 useless extension candidates. Maximal degree in co-relation 7063. Up to 877 conditions per place. [2024-06-03 19:08:43,197 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 202 selfloop transitions, 20 changer transitions 14/239 dead transitions. [2024-06-03 19:08:43,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 239 transitions, 2415 flow [2024-06-03 19:08:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:43,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:43,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:08:43,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 19:08:43,198 INFO L175 Difference]: Start difference. First operand has 311 places, 222 transitions, 1841 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:08:43,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 239 transitions, 2415 flow [2024-06-03 19:08:43,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 239 transitions, 2308 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:08:43,710 INFO L231 Difference]: Finished difference. Result has 306 places, 218 transitions, 1758 flow [2024-06-03 19:08:43,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1758, PETRI_PLACES=306, PETRI_TRANSITIONS=218} [2024-06-03 19:08:43,710 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-03 19:08:43,710 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 218 transitions, 1758 flow [2024-06-03 19:08:43,710 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) [2024-06-03 19:08:43,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:43,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:43,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-03 19:08:43,710 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)] === [2024-06-03 19:08:43,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:43,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1948398427, now seen corresponding path program 28 times [2024-06-03 19:08:43,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:43,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444311494] [2024-06-03 19:08:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:43,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:44,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:44,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444311494] [2024-06-03 19:08:44,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444311494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:44,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:44,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:44,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115919444] [2024-06-03 19:08:44,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:44,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:44,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:44,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:44,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:45,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:45,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 218 transitions, 1758 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) [2024-06-03 19:08:45,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:45,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:45,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:45,440 INFO L124 PetriNetUnfolderBase]: 492/994 cut-off events. [2024-06-03 19:08:45,440 INFO L125 PetriNetUnfolderBase]: For 170915/170918 co-relation queries the response was YES. [2024-06-03 19:08:45,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6975 conditions, 994 events. 492/994 cut-off events. For 170915/170918 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5641 event pairs, 77 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 6841. Up to 754 conditions per place. [2024-06-03 19:08:45,450 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 64 changer transitions 0/231 dead transitions. [2024-06-03 19:08:45,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 231 transitions, 2290 flow [2024-06-03 19:08:45,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:45,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-03 19:08:45,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-03 19:08:45,452 INFO L175 Difference]: Start difference. First operand has 306 places, 218 transitions, 1758 flow. Second operand 11 states and 137 transitions. [2024-06-03 19:08:45,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 231 transitions, 2290 flow [2024-06-03 19:08:45,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 231 transitions, 2244 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 19:08:45,905 INFO L231 Difference]: Finished difference. Result has 301 places, 219 transitions, 1894 flow [2024-06-03 19:08:45,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1894, PETRI_PLACES=301, PETRI_TRANSITIONS=219} [2024-06-03 19:08:45,906 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-03 19:08:45,906 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 219 transitions, 1894 flow [2024-06-03 19:08:45,906 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) [2024-06-03 19:08:45,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:45,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:45,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-03 19:08:45,906 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)] === [2024-06-03 19:08:45,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:45,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1338374259, now seen corresponding path program 29 times [2024-06-03 19:08:45,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:45,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887589456] [2024-06-03 19:08:45,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:45,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:47,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:47,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887589456] [2024-06-03 19:08:47,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887589456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:47,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:47,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:47,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015068481] [2024-06-03 19:08:47,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:47,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:47,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:47,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:47,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:47,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 219 transitions, 1894 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) [2024-06-03 19:08:47,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:47,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:47,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:47,768 INFO L124 PetriNetUnfolderBase]: 501/1012 cut-off events. [2024-06-03 19:08:47,768 INFO L125 PetriNetUnfolderBase]: For 199620/199620 co-relation queries the response was YES. [2024-06-03 19:08:47,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6886 conditions, 1012 events. 501/1012 cut-off events. For 199620/199620 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5772 event pairs, 73 based on Foata normal form. 10/1020 useless extension candidates. Maximal degree in co-relation 6754. Up to 876 conditions per place. [2024-06-03 19:08:47,778 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 198 selfloop transitions, 25 changer transitions 8/234 dead transitions. [2024-06-03 19:08:47,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 234 transitions, 2434 flow [2024-06-03 19:08:47,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:47,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:47,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 19:08:47,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-03 19:08:47,779 INFO L175 Difference]: Start difference. First operand has 301 places, 219 transitions, 1894 flow. Second operand 11 states and 133 transitions. [2024-06-03 19:08:47,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 234 transitions, 2434 flow [2024-06-03 19:08:48,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 234 transitions, 2230 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-03 19:08:48,290 INFO L231 Difference]: Finished difference. Result has 301 places, 214 transitions, 1706 flow [2024-06-03 19:08:48,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1706, PETRI_PLACES=301, PETRI_TRANSITIONS=214} [2024-06-03 19:08:48,291 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-03 19:08:48,291 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 214 transitions, 1706 flow [2024-06-03 19:08:48,291 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) [2024-06-03 19:08:48,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:48,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:48,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-03 19:08:48,291 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)] === [2024-06-03 19:08:48,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:48,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2000863877, now seen corresponding path program 30 times [2024-06-03 19:08:48,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:48,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131281158] [2024-06-03 19:08:48,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:48,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:49,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:49,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131281158] [2024-06-03 19:08:49,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131281158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:49,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:49,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:49,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542871178] [2024-06-03 19:08:49,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:49,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:49,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:49,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:49,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:49,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:49,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 214 transitions, 1706 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) [2024-06-03 19:08:49,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:49,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:49,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:50,157 INFO L124 PetriNetUnfolderBase]: 484/984 cut-off events. [2024-06-03 19:08:50,157 INFO L125 PetriNetUnfolderBase]: For 156462/156465 co-relation queries the response was YES. [2024-06-03 19:08:50,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 984 events. 484/984 cut-off events. For 156462/156465 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5603 event pairs, 78 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 6529. Up to 844 conditions per place. [2024-06-03 19:08:50,167 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 37 changer transitions 0/227 dead transitions. [2024-06-03 19:08:50,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 227 transitions, 2240 flow [2024-06-03 19:08:50,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:50,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 19:08:50,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:08:50,168 INFO L175 Difference]: Start difference. First operand has 301 places, 214 transitions, 1706 flow. Second operand 11 states and 132 transitions. [2024-06-03 19:08:50,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 227 transitions, 2240 flow [2024-06-03 19:08:50,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 227 transitions, 2126 flow, removed 23 selfloop flow, removed 12 redundant places. [2024-06-03 19:08:50,638 INFO L231 Difference]: Finished difference. Result has 300 places, 215 transitions, 1730 flow [2024-06-03 19:08:50,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1730, PETRI_PLACES=300, PETRI_TRANSITIONS=215} [2024-06-03 19:08:50,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-03 19:08:50,638 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 215 transitions, 1730 flow [2024-06-03 19:08:50,638 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) [2024-06-03 19:08:50,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:50,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:50,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-03 19:08:50,638 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)] === [2024-06-03 19:08:50,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:50,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1787384239, now seen corresponding path program 31 times [2024-06-03 19:08:50,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:50,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981958150] [2024-06-03 19:08:50,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:50,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:51,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:51,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981958150] [2024-06-03 19:08:51,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981958150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:51,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:51,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:51,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961943035] [2024-06-03 19:08:51,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:51,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:51,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:51,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:51,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:52,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:52,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 215 transitions, 1730 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) [2024-06-03 19:08:52,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:52,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:52,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:52,483 INFO L124 PetriNetUnfolderBase]: 510/1034 cut-off events. [2024-06-03 19:08:52,484 INFO L125 PetriNetUnfolderBase]: For 207766/207769 co-relation queries the response was YES. [2024-06-03 19:08:52,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7840 conditions, 1034 events. 510/1034 cut-off events. For 207766/207769 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5947 event pairs, 86 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 7707. Up to 825 conditions per place. [2024-06-03 19:08:52,495 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 39 changer transitions 0/233 dead transitions. [2024-06-03 19:08:52,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 233 transitions, 2552 flow [2024-06-03 19:08:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:52,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:52,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-03 19:08:52,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-03 19:08:52,496 INFO L175 Difference]: Start difference. First operand has 300 places, 215 transitions, 1730 flow. Second operand 11 states and 137 transitions. [2024-06-03 19:08:52,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 233 transitions, 2552 flow [2024-06-03 19:08:53,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 233 transitions, 2424 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-03 19:08:53,140 INFO L231 Difference]: Finished difference. Result has 302 places, 216 transitions, 1744 flow [2024-06-03 19:08:53,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1744, PETRI_PLACES=302, PETRI_TRANSITIONS=216} [2024-06-03 19:08:53,140 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-03 19:08:53,140 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 216 transitions, 1744 flow [2024-06-03 19:08:53,140 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) [2024-06-03 19:08:53,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:53,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:53,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-03 19:08:53,141 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)] === [2024-06-03 19:08:53,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:53,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2007119987, now seen corresponding path program 32 times [2024-06-03 19:08:53,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:53,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519678339] [2024-06-03 19:08:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:53,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:54,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:54,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519678339] [2024-06-03 19:08:54,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519678339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:54,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:54,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:08:54,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52776984] [2024-06-03 19:08:54,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:54,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:08:54,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:54,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:08:54,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:08:54,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:54,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 216 transitions, 1744 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) [2024-06-03 19:08:54,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:54,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:54,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:55,096 INFO L124 PetriNetUnfolderBase]: 497/1015 cut-off events. [2024-06-03 19:08:55,096 INFO L125 PetriNetUnfolderBase]: For 197648/197651 co-relation queries the response was YES. [2024-06-03 19:08:55,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6523 conditions, 1015 events. 497/1015 cut-off events. For 197648/197651 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5846 event pairs, 81 based on Foata normal form. 10/1020 useless extension candidates. Maximal degree in co-relation 6389. Up to 843 conditions per place. [2024-06-03 19:08:55,105 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 33 changer transitions 6/231 dead transitions. [2024-06-03 19:08:55,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 231 transitions, 2278 flow [2024-06-03 19:08:55,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:08:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:08:55,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-03 19:08:55,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-03 19:08:55,106 INFO L175 Difference]: Start difference. First operand has 302 places, 216 transitions, 1744 flow. Second operand 11 states and 134 transitions. [2024-06-03 19:08:55,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 231 transitions, 2278 flow [2024-06-03 19:08:55,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 231 transitions, 2022 flow, removed 54 selfloop flow, removed 11 redundant places. [2024-06-03 19:08:55,577 INFO L231 Difference]: Finished difference. Result has 302 places, 213 transitions, 1538 flow [2024-06-03 19:08:55,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1538, PETRI_PLACES=302, PETRI_TRANSITIONS=213} [2024-06-03 19:08:55,577 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-03 19:08:55,578 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 213 transitions, 1538 flow [2024-06-03 19:08:55,578 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) [2024-06-03 19:08:55,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:55,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:55,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-03 19:08:55,578 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)] === [2024-06-03 19:08:55,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:55,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1977038995, now seen corresponding path program 14 times [2024-06-03 19:08:55,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:55,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833200470] [2024-06-03 19:08:55,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:55,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:08:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:08:57,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:08:57,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833200470] [2024-06-03 19:08:57,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833200470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:08:57,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:08:57,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:08:57,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352415617] [2024-06-03 19:08:57,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:08:57,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:08:57,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:08:57,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:08:57,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:08:57,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:08:57,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 213 transitions, 1538 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) [2024-06-03 19:08:57,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:08:57,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:08:57,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:08:58,026 INFO L124 PetriNetUnfolderBase]: 488/996 cut-off events. [2024-06-03 19:08:58,026 INFO L125 PetriNetUnfolderBase]: For 171215/171218 co-relation queries the response was YES. [2024-06-03 19:08:58,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6070 conditions, 996 events. 488/996 cut-off events. For 171215/171218 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5733 event pairs, 79 based on Foata normal form. 6/996 useless extension candidates. Maximal degree in co-relation 5938. Up to 624 conditions per place. [2024-06-03 19:08:58,037 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 150 selfloop transitions, 71 changer transitions 6/230 dead transitions. [2024-06-03 19:08:58,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 230 transitions, 2330 flow [2024-06-03 19:08:58,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:08:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:08:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-03 19:08:58,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 19:08:58,037 INFO L175 Difference]: Start difference. First operand has 302 places, 213 transitions, 1538 flow. Second operand 12 states and 150 transitions. [2024-06-03 19:08:58,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 230 transitions, 2330 flow [2024-06-03 19:08:58,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 230 transitions, 2175 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-03 19:08:58,629 INFO L231 Difference]: Finished difference. Result has 301 places, 211 transitions, 1516 flow [2024-06-03 19:08:58,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1516, PETRI_PLACES=301, PETRI_TRANSITIONS=211} [2024-06-03 19:08:58,630 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-03 19:08:58,630 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 211 transitions, 1516 flow [2024-06-03 19:08:58,630 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) [2024-06-03 19:08:58,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:08:58,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:08:58,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-03 19:08:58,630 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)] === [2024-06-03 19:08:58,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:08:58,631 INFO L85 PathProgramCache]: Analyzing trace with hash -349040911, now seen corresponding path program 15 times [2024-06-03 19:08:58,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:08:58,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304576823] [2024-06-03 19:08:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:08:58,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:08:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:00,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:00,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304576823] [2024-06-03 19:09:00,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304576823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:00,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:00,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:00,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302514053] [2024-06-03 19:09:00,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:00,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:00,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:00,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:00,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:00,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 211 transitions, 1516 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) [2024-06-03 19:09:00,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:00,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:00,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:01,027 INFO L124 PetriNetUnfolderBase]: 486/996 cut-off events. [2024-06-03 19:09:01,027 INFO L125 PetriNetUnfolderBase]: For 188690/188693 co-relation queries the response was YES. [2024-06-03 19:09:01,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6065 conditions, 996 events. 486/996 cut-off events. For 188690/188693 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5749 event pairs, 81 based on Foata normal form. 8/999 useless extension candidates. Maximal degree in co-relation 5933. Up to 804 conditions per place. [2024-06-03 19:09:01,037 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 39 changer transitions 13/227 dead transitions. [2024-06-03 19:09:01,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 227 transitions, 2044 flow [2024-06-03 19:09:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:01,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-03 19:09:01,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-03 19:09:01,038 INFO L175 Difference]: Start difference. First operand has 301 places, 211 transitions, 1516 flow. Second operand 12 states and 145 transitions. [2024-06-03 19:09:01,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 227 transitions, 2044 flow [2024-06-03 19:09:01,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 227 transitions, 1883 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-03 19:09:01,502 INFO L231 Difference]: Finished difference. Result has 298 places, 205 transitions, 1408 flow [2024-06-03 19:09:01,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1408, PETRI_PLACES=298, PETRI_TRANSITIONS=205} [2024-06-03 19:09:01,503 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-03 19:09:01,503 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 205 transitions, 1408 flow [2024-06-03 19:09:01,503 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) [2024-06-03 19:09:01,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:01,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:01,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-03 19:09:01,503 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)] === [2024-06-03 19:09:01,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:01,503 INFO L85 PathProgramCache]: Analyzing trace with hash -348801901, now seen corresponding path program 16 times [2024-06-03 19:09:01,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:01,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600153617] [2024-06-03 19:09:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:01,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:02,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:02,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600153617] [2024-06-03 19:09:02,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600153617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:02,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:02,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:09:02,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995620197] [2024-06-03 19:09:02,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:02,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:09:02,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:02,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:09:02,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:09:02,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:02,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 205 transitions, 1408 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) [2024-06-03 19:09:02,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:02,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:02,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:03,335 INFO L124 PetriNetUnfolderBase]: 470/970 cut-off events. [2024-06-03 19:09:03,335 INFO L125 PetriNetUnfolderBase]: For 170587/170590 co-relation queries the response was YES. [2024-06-03 19:09:03,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5824 conditions, 970 events. 470/970 cut-off events. For 170587/170590 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5532 event pairs, 77 based on Foata normal form. 6/971 useless extension candidates. Maximal degree in co-relation 5696. Up to 757 conditions per place. [2024-06-03 19:09:03,344 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 162 selfloop transitions, 41 changer transitions 14/220 dead transitions. [2024-06-03 19:09:03,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 220 transitions, 1908 flow [2024-06-03 19:09:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:09:03,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:09:03,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-03 19:09:03,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-03 19:09:03,345 INFO L175 Difference]: Start difference. First operand has 298 places, 205 transitions, 1408 flow. Second operand 11 states and 134 transitions. [2024-06-03 19:09:03,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 220 transitions, 1908 flow [2024-06-03 19:09:03,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 220 transitions, 1822 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 19:09:03,848 INFO L231 Difference]: Finished difference. Result has 291 places, 198 transitions, 1360 flow [2024-06-03 19:09:03,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1360, PETRI_PLACES=291, PETRI_TRANSITIONS=198} [2024-06-03 19:09:03,848 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-03 19:09:03,848 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 198 transitions, 1360 flow [2024-06-03 19:09:03,848 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) [2024-06-03 19:09:03,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:03,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:03,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-03 19:09:03,849 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)] === [2024-06-03 19:09:03,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:03,849 INFO L85 PathProgramCache]: Analyzing trace with hash -570446941, now seen corresponding path program 17 times [2024-06-03 19:09:03,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:03,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394722747] [2024-06-03 19:09:03,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:03,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:05,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:05,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394722747] [2024-06-03 19:09:05,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394722747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:05,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:05,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:05,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826912109] [2024-06-03 19:09:05,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:05,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:05,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:05,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:05,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:05,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:05,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 198 transitions, 1360 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) [2024-06-03 19:09:05,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:05,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:05,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:06,138 INFO L124 PetriNetUnfolderBase]: 477/983 cut-off events. [2024-06-03 19:09:06,138 INFO L125 PetriNetUnfolderBase]: For 206813/206816 co-relation queries the response was YES. [2024-06-03 19:09:06,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6737 conditions, 983 events. 477/983 cut-off events. For 206813/206816 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5632 event pairs, 87 based on Foata normal form. 6/984 useless extension candidates. Maximal degree in co-relation 6612. Up to 751 conditions per place. [2024-06-03 19:09:06,147 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 170 selfloop transitions, 38 changer transitions 7/218 dead transitions. [2024-06-03 19:09:06,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 218 transitions, 2124 flow [2024-06-03 19:09:06,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:06,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:06,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-03 19:09:06,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-03 19:09:06,148 INFO L175 Difference]: Start difference. First operand has 291 places, 198 transitions, 1360 flow. Second operand 12 states and 148 transitions. [2024-06-03 19:09:06,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 218 transitions, 2124 flow [2024-06-03 19:09:06,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 218 transitions, 2024 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 19:09:06,827 INFO L231 Difference]: Finished difference. Result has 284 places, 195 transitions, 1331 flow [2024-06-03 19:09:06,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1331, PETRI_PLACES=284, PETRI_TRANSITIONS=195} [2024-06-03 19:09:06,827 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-03 19:09:06,827 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 195 transitions, 1331 flow [2024-06-03 19:09:06,827 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) [2024-06-03 19:09:06,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:06,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:06,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-03 19:09:06,828 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)] === [2024-06-03 19:09:06,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:06,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1763728617, now seen corresponding path program 18 times [2024-06-03 19:09:06,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:06,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187968910] [2024-06-03 19:09:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:06,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:08,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:08,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187968910] [2024-06-03 19:09:08,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187968910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:08,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:08,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:08,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240175300] [2024-06-03 19:09:08,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:08,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:08,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:08,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:08,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:08,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:08,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 195 transitions, 1331 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) [2024-06-03 19:09:08,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:08,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:08,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:08,953 INFO L124 PetriNetUnfolderBase]: 474/972 cut-off events. [2024-06-03 19:09:08,953 INFO L125 PetriNetUnfolderBase]: For 214638/214641 co-relation queries the response was YES. [2024-06-03 19:09:08,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6651 conditions, 972 events. 474/972 cut-off events. For 214638/214641 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5554 event pairs, 95 based on Foata normal form. 8/974 useless extension candidates. Maximal degree in co-relation 6528. Up to 688 conditions per place. [2024-06-03 19:09:08,962 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 131 selfloop transitions, 64 changer transitions 10/208 dead transitions. [2024-06-03 19:09:08,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 208 transitions, 1807 flow [2024-06-03 19:09:08,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-03 19:09:08,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-03 19:09:08,963 INFO L175 Difference]: Start difference. First operand has 284 places, 195 transitions, 1331 flow. Second operand 12 states and 146 transitions. [2024-06-03 19:09:08,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 208 transitions, 1807 flow [2024-06-03 19:09:09,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 208 transitions, 1731 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:09:09,533 INFO L231 Difference]: Finished difference. Result has 282 places, 191 transitions, 1360 flow [2024-06-03 19:09:09,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1360, PETRI_PLACES=282, PETRI_TRANSITIONS=191} [2024-06-03 19:09:09,533 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-03 19:09:09,533 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 191 transitions, 1360 flow [2024-06-03 19:09:09,534 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) [2024-06-03 19:09:09,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:09,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:09,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-03 19:09:09,534 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)] === [2024-06-03 19:09:09,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:09,534 INFO L85 PathProgramCache]: Analyzing trace with hash 89187875, now seen corresponding path program 19 times [2024-06-03 19:09:09,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:09,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612877500] [2024-06-03 19:09:09,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:09,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:11,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:11,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612877500] [2024-06-03 19:09:11,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612877500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:11,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:11,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:11,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747087525] [2024-06-03 19:09:11,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:11,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:11,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:11,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:11,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:11,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 191 transitions, 1360 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) [2024-06-03 19:09:11,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:11,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:11,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:12,208 INFO L124 PetriNetUnfolderBase]: 468/962 cut-off events. [2024-06-03 19:09:12,208 INFO L125 PetriNetUnfolderBase]: For 210721/210724 co-relation queries the response was YES. [2024-06-03 19:09:12,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6633 conditions, 962 events. 468/962 cut-off events. For 210721/210724 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5490 event pairs, 91 based on Foata normal form. 8/965 useless extension candidates. Maximal degree in co-relation 6511. Up to 646 conditions per place. [2024-06-03 19:09:12,217 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 76 changer transitions 7/207 dead transitions. [2024-06-03 19:09:12,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 207 transitions, 1844 flow [2024-06-03 19:09:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-03 19:09:12,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-03 19:09:12,218 INFO L175 Difference]: Start difference. First operand has 282 places, 191 transitions, 1360 flow. Second operand 12 states and 153 transitions. [2024-06-03 19:09:12,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 207 transitions, 1844 flow [2024-06-03 19:09:12,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 207 transitions, 1705 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-03 19:09:12,829 INFO L231 Difference]: Finished difference. Result has 279 places, 188 transitions, 1360 flow [2024-06-03 19:09:12,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1360, PETRI_PLACES=279, PETRI_TRANSITIONS=188} [2024-06-03 19:09:12,830 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-03 19:09:12,830 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 188 transitions, 1360 flow [2024-06-03 19:09:12,830 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) [2024-06-03 19:09:12,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:12,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:12,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-03 19:09:12,830 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)] === [2024-06-03 19:09:12,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:12,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1720504221, now seen corresponding path program 20 times [2024-06-03 19:09:12,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:12,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598812066] [2024-06-03 19:09:12,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:12,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:15,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:15,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598812066] [2024-06-03 19:09:15,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598812066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:15,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:15,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:15,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670474569] [2024-06-03 19:09:15,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:15,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:15,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:15,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:15,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:15,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:15,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 188 transitions, 1360 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) [2024-06-03 19:09:15,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:15,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:15,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:15,935 INFO L124 PetriNetUnfolderBase]: 456/946 cut-off events. [2024-06-03 19:09:15,936 INFO L125 PetriNetUnfolderBase]: For 199461/199464 co-relation queries the response was YES. [2024-06-03 19:09:15,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 946 events. 456/946 cut-off events. For 199461/199464 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5382 event pairs, 94 based on Foata normal form. 8/949 useless extension candidates. Maximal degree in co-relation 6180. Up to 691 conditions per place. [2024-06-03 19:09:15,944 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 133 selfloop transitions, 59 changer transitions 9/204 dead transitions. [2024-06-03 19:09:15,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 204 transitions, 1838 flow [2024-06-03 19:09:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:15,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:15,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-03 19:09:15,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-03 19:09:15,946 INFO L175 Difference]: Start difference. First operand has 279 places, 188 transitions, 1360 flow. Second operand 12 states and 147 transitions. [2024-06-03 19:09:15,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 204 transitions, 1838 flow [2024-06-03 19:09:16,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 204 transitions, 1680 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-03 19:09:16,418 INFO L231 Difference]: Finished difference. Result has 277 places, 185 transitions, 1305 flow [2024-06-03 19:09:16,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1305, PETRI_PLACES=277, PETRI_TRANSITIONS=185} [2024-06-03 19:09:16,418 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-03 19:09:16,418 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 185 transitions, 1305 flow [2024-06-03 19:09:16,418 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) [2024-06-03 19:09:16,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:16,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:16,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-03 19:09:16,418 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)] === [2024-06-03 19:09:16,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:16,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1956976251, now seen corresponding path program 21 times [2024-06-03 19:09:16,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:16,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987196579] [2024-06-03 19:09:16,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:16,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:17,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:17,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987196579] [2024-06-03 19:09:17,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987196579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:17,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:17,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:09:17,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521916051] [2024-06-03 19:09:17,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:17,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:09:17,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:17,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:09:17,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:09:17,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:17,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 185 transitions, 1305 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) [2024-06-03 19:09:17,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:17,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:17,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:18,199 INFO L124 PetriNetUnfolderBase]: 469/981 cut-off events. [2024-06-03 19:09:18,200 INFO L125 PetriNetUnfolderBase]: For 226665/226668 co-relation queries the response was YES. [2024-06-03 19:09:18,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7227 conditions, 981 events. 469/981 cut-off events. For 226665/226668 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5642 event pairs, 100 based on Foata normal form. 6/982 useless extension candidates. Maximal degree in co-relation 7106. Up to 526 conditions per place. [2024-06-03 19:09:18,210 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 127 selfloop transitions, 66 changer transitions 9/205 dead transitions. [2024-06-03 19:09:18,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 205 transitions, 2035 flow [2024-06-03 19:09:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:09:18,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:09:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-03 19:09:18,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-03 19:09:18,211 INFO L175 Difference]: Start difference. First operand has 277 places, 185 transitions, 1305 flow. Second operand 11 states and 147 transitions. [2024-06-03 19:09:18,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 205 transitions, 2035 flow [2024-06-03 19:09:18,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 205 transitions, 1909 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:09:18,723 INFO L231 Difference]: Finished difference. Result has 274 places, 182 transitions, 1302 flow [2024-06-03 19:09:18,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1302, PETRI_PLACES=274, PETRI_TRANSITIONS=182} [2024-06-03 19:09:18,724 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-03 19:09:18,724 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 182 transitions, 1302 flow [2024-06-03 19:09:18,724 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) [2024-06-03 19:09:18,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:18,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:18,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-03 19:09:18,725 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)] === [2024-06-03 19:09:18,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:18,725 INFO L85 PathProgramCache]: Analyzing trace with hash -340470031, now seen corresponding path program 22 times [2024-06-03 19:09:18,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:18,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901150084] [2024-06-03 19:09:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:18,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:20,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:20,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901150084] [2024-06-03 19:09:20,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901150084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:20,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:20,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:20,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094427561] [2024-06-03 19:09:20,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:20,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:20,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:20,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:20,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:20,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:20,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 182 transitions, 1302 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) [2024-06-03 19:09:20,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:20,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:20,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:20,934 INFO L124 PetriNetUnfolderBase]: 481/1009 cut-off events. [2024-06-03 19:09:20,934 INFO L125 PetriNetUnfolderBase]: For 261233/261236 co-relation queries the response was YES. [2024-06-03 19:09:20,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8198 conditions, 1009 events. 481/1009 cut-off events. For 261233/261236 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5858 event pairs, 110 based on Foata normal form. 6/1010 useless extension candidates. Maximal degree in co-relation 8078. Up to 694 conditions per place. [2024-06-03 19:09:20,944 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 43 changer transitions 11/203 dead transitions. [2024-06-03 19:09:20,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 203 transitions, 2028 flow [2024-06-03 19:09:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:20,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:20,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-03 19:09:20,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-03 19:09:20,945 INFO L175 Difference]: Start difference. First operand has 274 places, 182 transitions, 1302 flow. Second operand 12 states and 147 transitions. [2024-06-03 19:09:20,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 203 transitions, 2028 flow [2024-06-03 19:09:21,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 203 transitions, 1893 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-03 19:09:21,779 INFO L231 Difference]: Finished difference. Result has 272 places, 177 transitions, 1238 flow [2024-06-03 19:09:21,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1238, PETRI_PLACES=272, PETRI_TRANSITIONS=177} [2024-06-03 19:09:21,780 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-03 19:09:21,780 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 177 transitions, 1238 flow [2024-06-03 19:09:21,780 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) [2024-06-03 19:09:21,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:21,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:21,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-03 19:09:21,780 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)] === [2024-06-03 19:09:21,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:21,780 INFO L85 PathProgramCache]: Analyzing trace with hash -570685951, now seen corresponding path program 23 times [2024-06-03 19:09:21,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:21,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359520954] [2024-06-03 19:09:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:21,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:23,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:23,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359520954] [2024-06-03 19:09:23,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359520954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:23,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:23,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:23,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439742923] [2024-06-03 19:09:23,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:23,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:23,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:23,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:23,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:24,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:24,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 177 transitions, 1238 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) [2024-06-03 19:09:24,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:24,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:24,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:24,569 INFO L124 PetriNetUnfolderBase]: 473/989 cut-off events. [2024-06-03 19:09:24,569 INFO L125 PetriNetUnfolderBase]: For 262968/262971 co-relation queries the response was YES. [2024-06-03 19:09:24,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8040 conditions, 989 events. 473/989 cut-off events. For 262968/262971 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5734 event pairs, 114 based on Foata normal form. 8/992 useless extension candidates. Maximal degree in co-relation 7922. Up to 820 conditions per place. [2024-06-03 19:09:24,579 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 148 selfloop transitions, 33 changer transitions 9/193 dead transitions. [2024-06-03 19:09:24,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 193 transitions, 1694 flow [2024-06-03 19:09:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:24,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-03 19:09:24,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-03 19:09:24,580 INFO L175 Difference]: Start difference. First operand has 272 places, 177 transitions, 1238 flow. Second operand 12 states and 145 transitions. [2024-06-03 19:09:24,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 193 transitions, 1694 flow [2024-06-03 19:09:25,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 193 transitions, 1607 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-03 19:09:25,361 INFO L231 Difference]: Finished difference. Result has 265 places, 174 transitions, 1200 flow [2024-06-03 19:09:25,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1200, PETRI_PLACES=265, PETRI_TRANSITIONS=174} [2024-06-03 19:09:25,361 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-03 19:09:25,361 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 174 transitions, 1200 flow [2024-06-03 19:09:25,361 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) [2024-06-03 19:09:25,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:25,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:25,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-03 19:09:25,361 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)] === [2024-06-03 19:09:25,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:25,362 INFO L85 PathProgramCache]: Analyzing trace with hash -576942061, now seen corresponding path program 24 times [2024-06-03 19:09:25,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:25,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430874923] [2024-06-03 19:09:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:25,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:28,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:28,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430874923] [2024-06-03 19:09:28,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430874923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:28,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:28,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:28,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362652795] [2024-06-03 19:09:28,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:28,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:28,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:28,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:28,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:28,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:28,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 174 transitions, 1200 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) [2024-06-03 19:09:28,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:28,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:28,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:29,523 INFO L124 PetriNetUnfolderBase]: 446/936 cut-off events. [2024-06-03 19:09:29,523 INFO L125 PetriNetUnfolderBase]: For 206192/206195 co-relation queries the response was YES. [2024-06-03 19:09:29,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6828 conditions, 936 events. 446/936 cut-off events. For 206192/206195 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5341 event pairs, 102 based on Foata normal form. 8/939 useless extension candidates. Maximal degree in co-relation 6714. Up to 767 conditions per place. [2024-06-03 19:09:29,531 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 32 changer transitions 9/190 dead transitions. [2024-06-03 19:09:29,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 190 transitions, 1650 flow [2024-06-03 19:09:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-03 19:09:29,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-03 19:09:29,532 INFO L175 Difference]: Start difference. First operand has 265 places, 174 transitions, 1200 flow. Second operand 12 states and 143 transitions. [2024-06-03 19:09:29,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 190 transitions, 1650 flow [2024-06-03 19:09:30,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 190 transitions, 1580 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:09:30,157 INFO L231 Difference]: Finished difference. Result has 263 places, 171 transitions, 1177 flow [2024-06-03 19:09:30,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1177, PETRI_PLACES=263, PETRI_TRANSITIONS=171} [2024-06-03 19:09:30,158 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-03 19:09:30,158 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 171 transitions, 1177 flow [2024-06-03 19:09:30,158 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) [2024-06-03 19:09:30,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:30,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:30,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-03 19:09:30,158 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)] === [2024-06-03 19:09:30,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:30,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1985143017, now seen corresponding path program 25 times [2024-06-03 19:09:30,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:30,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678151926] [2024-06-03 19:09:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:30,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:31,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:31,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:31,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678151926] [2024-06-03 19:09:31,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678151926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:31,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:31,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:31,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515805181] [2024-06-03 19:09:31,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:31,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:31,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:31,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:31,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:32,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:32,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 171 transitions, 1177 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) [2024-06-03 19:09:32,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:32,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:32,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:32,442 INFO L124 PetriNetUnfolderBase]: 441/929 cut-off events. [2024-06-03 19:09:32,442 INFO L125 PetriNetUnfolderBase]: For 201987/201990 co-relation queries the response was YES. [2024-06-03 19:09:32,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6755 conditions, 929 events. 441/929 cut-off events. For 201987/201990 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5297 event pairs, 102 based on Foata normal form. 8/932 useless extension candidates. Maximal degree in co-relation 6642. Up to 667 conditions per place. [2024-06-03 19:09:32,449 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 50 changer transitions 13/187 dead transitions. [2024-06-03 19:09:32,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 187 transitions, 1621 flow [2024-06-03 19:09:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:32,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:32,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-03 19:09:32,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 19:09:32,450 INFO L175 Difference]: Start difference. First operand has 263 places, 171 transitions, 1177 flow. Second operand 12 states and 150 transitions. [2024-06-03 19:09:32,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 187 transitions, 1621 flow [2024-06-03 19:09:33,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 187 transitions, 1553 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:09:33,018 INFO L231 Difference]: Finished difference. Result has 260 places, 165 transitions, 1172 flow [2024-06-03 19:09:33,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1172, PETRI_PLACES=260, PETRI_TRANSITIONS=165} [2024-06-03 19:09:33,018 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-03 19:09:33,019 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 165 transitions, 1172 flow [2024-06-03 19:09:33,019 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) [2024-06-03 19:09:33,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:33,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:33,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-03 19:09:33,019 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)] === [2024-06-03 19:09:33,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:33,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1985373657, now seen corresponding path program 26 times [2024-06-03 19:09:33,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:33,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333771897] [2024-06-03 19:09:33,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:33,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:35,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:35,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333771897] [2024-06-03 19:09:35,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333771897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:35,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:35,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:35,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629466257] [2024-06-03 19:09:35,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:35,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:35,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:35,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:35,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:35,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 165 transitions, 1172 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) [2024-06-03 19:09:35,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:35,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:35,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:35,987 INFO L124 PetriNetUnfolderBase]: 432/916 cut-off events. [2024-06-03 19:09:35,987 INFO L125 PetriNetUnfolderBase]: For 197830/197833 co-relation queries the response was YES. [2024-06-03 19:09:35,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6702 conditions, 916 events. 432/916 cut-off events. For 197830/197833 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5207 event pairs, 108 based on Foata normal form. 8/918 useless extension candidates. Maximal degree in co-relation 6590. Up to 638 conditions per place. [2024-06-03 19:09:35,996 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 115 selfloop transitions, 53 changer transitions 9/180 dead transitions. [2024-06-03 19:09:35,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 180 transitions, 1606 flow [2024-06-03 19:09:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:35,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-03 19:09:35,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-03 19:09:35,997 INFO L175 Difference]: Start difference. First operand has 260 places, 165 transitions, 1172 flow. Second operand 12 states and 145 transitions. [2024-06-03 19:09:35,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 180 transitions, 1606 flow [2024-06-03 19:09:36,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 180 transitions, 1486 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-03 19:09:36,569 INFO L231 Difference]: Finished difference. Result has 255 places, 164 transitions, 1160 flow [2024-06-03 19:09:36,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1160, PETRI_PLACES=255, PETRI_TRANSITIONS=164} [2024-06-03 19:09:36,570 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-03 19:09:36,570 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 164 transitions, 1160 flow [2024-06-03 19:09:36,570 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) [2024-06-03 19:09:36,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:36,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:36,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-03 19:09:36,570 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)] === [2024-06-03 19:09:36,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:36,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2000870821, now seen corresponding path program 27 times [2024-06-03 19:09:36,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:36,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960561846] [2024-06-03 19:09:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:36,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:39,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:39,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960561846] [2024-06-03 19:09:39,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960561846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:39,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:39,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:39,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706144808] [2024-06-03 19:09:39,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:39,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:39,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:39,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:39,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:39,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:39,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 164 transitions, 1160 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) [2024-06-03 19:09:39,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:39,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:39,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:40,018 INFO L124 PetriNetUnfolderBase]: 427/905 cut-off events. [2024-06-03 19:09:40,018 INFO L125 PetriNetUnfolderBase]: For 189685/189688 co-relation queries the response was YES. [2024-06-03 19:09:40,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6581 conditions, 905 events. 427/905 cut-off events. For 189685/189688 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5137 event pairs, 102 based on Foata normal form. 8/908 useless extension candidates. Maximal degree in co-relation 6471. Up to 756 conditions per place. [2024-06-03 19:09:40,027 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 140 selfloop transitions, 28 changer transitions 9/180 dead transitions. [2024-06-03 19:09:40,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 180 transitions, 1590 flow [2024-06-03 19:09:40,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-03 19:09:40,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 19:09:40,028 INFO L175 Difference]: Start difference. First operand has 255 places, 164 transitions, 1160 flow. Second operand 12 states and 141 transitions. [2024-06-03 19:09:40,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 180 transitions, 1590 flow [2024-06-03 19:09:40,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 180 transitions, 1471 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-03 19:09:40,549 INFO L231 Difference]: Finished difference. Result has 253 places, 161 transitions, 1082 flow [2024-06-03 19:09:40,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1082, PETRI_PLACES=253, PETRI_TRANSITIONS=161} [2024-06-03 19:09:40,549 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-03 19:09:40,549 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 161 transitions, 1082 flow [2024-06-03 19:09:40,549 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) [2024-06-03 19:09:40,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:40,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:40,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-03 19:09:40,549 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)] === [2024-06-03 19:09:40,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:40,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2007126931, now seen corresponding path program 28 times [2024-06-03 19:09:40,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:40,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411811385] [2024-06-03 19:09:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:40,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:42,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:42,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411811385] [2024-06-03 19:09:42,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411811385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:42,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:42,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:42,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101713703] [2024-06-03 19:09:42,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:42,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:42,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:42,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:42,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:43,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:43,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 161 transitions, 1082 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) [2024-06-03 19:09:43,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:43,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:43,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:43,537 INFO L124 PetriNetUnfolderBase]: 415/885 cut-off events. [2024-06-03 19:09:43,537 INFO L125 PetriNetUnfolderBase]: For 180718/180721 co-relation queries the response was YES. [2024-06-03 19:09:43,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6257 conditions, 885 events. 415/885 cut-off events. For 180718/180721 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4987 event pairs, 101 based on Foata normal form. 8/888 useless extension candidates. Maximal degree in co-relation 6148. Up to 736 conditions per place. [2024-06-03 19:09:43,544 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 27 changer transitions 9/177 dead transitions. [2024-06-03 19:09:43,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 177 transitions, 1506 flow [2024-06-03 19:09:43,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:43,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:43,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-03 19:09:43,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 19:09:43,545 INFO L175 Difference]: Start difference. First operand has 253 places, 161 transitions, 1082 flow. Second operand 12 states and 141 transitions. [2024-06-03 19:09:43,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 177 transitions, 1506 flow [2024-06-03 19:09:43,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 177 transitions, 1446 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:09:44,001 INFO L231 Difference]: Finished difference. Result has 251 places, 158 transitions, 1061 flow [2024-06-03 19:09:44,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1061, PETRI_PLACES=251, PETRI_TRANSITIONS=158} [2024-06-03 19:09:44,001 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-03 19:09:44,001 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 158 transitions, 1061 flow [2024-06-03 19:09:44,001 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) [2024-06-03 19:09:44,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:44,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:44,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-03 19:09:44,003 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)] === [2024-06-03 19:09:44,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:44,003 INFO L85 PathProgramCache]: Analyzing trace with hash 2007365941, now seen corresponding path program 29 times [2024-06-03 19:09:44,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:44,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837228059] [2024-06-03 19:09:44,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:44,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:45,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:45,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837228059] [2024-06-03 19:09:45,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837228059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:45,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:45,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:45,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886734575] [2024-06-03 19:09:45,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:45,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:45,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:45,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:45,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:45,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:45,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 158 transitions, 1061 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) [2024-06-03 19:09:45,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:45,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:45,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:46,183 INFO L124 PetriNetUnfolderBase]: 391/837 cut-off events. [2024-06-03 19:09:46,183 INFO L125 PetriNetUnfolderBase]: For 142836/142839 co-relation queries the response was YES. [2024-06-03 19:09:46,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 837 events. 391/837 cut-off events. For 142836/142839 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4671 event pairs, 84 based on Foata normal form. 6/838 useless extension candidates. Maximal degree in co-relation 5330. Up to 690 conditions per place. [2024-06-03 19:09:46,191 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 25 changer transitions 10/174 dead transitions. [2024-06-03 19:09:46,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 174 transitions, 1471 flow [2024-06-03 19:09:46,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:46,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-03 19:09:46,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-03 19:09:46,192 INFO L175 Difference]: Start difference. First operand has 251 places, 158 transitions, 1061 flow. Second operand 12 states and 139 transitions. [2024-06-03 19:09:46,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 174 transitions, 1471 flow [2024-06-03 19:09:46,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 174 transitions, 1413 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:09:46,559 INFO L231 Difference]: Finished difference. Result has 249 places, 155 transitions, 1039 flow [2024-06-03 19:09:46,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1039, PETRI_PLACES=249, PETRI_TRANSITIONS=155} [2024-06-03 19:09:46,560 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-03 19:09:46,560 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 155 transitions, 1039 flow [2024-06-03 19:09:46,560 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) [2024-06-03 19:09:46,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:46,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:46,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-03 19:09:46,560 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)] === [2024-06-03 19:09:46,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:46,561 INFO L85 PathProgramCache]: Analyzing trace with hash 319107125, now seen corresponding path program 30 times [2024-06-03 19:09:46,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:46,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991595807] [2024-06-03 19:09:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:46,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:48,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:48,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:48,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991595807] [2024-06-03 19:09:48,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991595807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:48,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:48,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:48,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589884555] [2024-06-03 19:09:48,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:48,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:48,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:48,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:48,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:48,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:48,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 155 transitions, 1039 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) [2024-06-03 19:09:48,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:48,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:48,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:48,659 INFO L124 PetriNetUnfolderBase]: 381/819 cut-off events. [2024-06-03 19:09:48,659 INFO L125 PetriNetUnfolderBase]: For 141036/141039 co-relation queries the response was YES. [2024-06-03 19:09:48,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5161 conditions, 819 events. 381/819 cut-off events. For 141036/141039 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4561 event pairs, 89 based on Foata normal form. 8/822 useless extension candidates. Maximal degree in co-relation 5054. Up to 563 conditions per place. [2024-06-03 19:09:48,666 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 110 selfloop transitions, 50 changer transitions 9/172 dead transitions. [2024-06-03 19:09:48,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 172 transitions, 1455 flow [2024-06-03 19:09:48,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:09:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:09:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-03 19:09:48,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-03 19:09:48,668 INFO L175 Difference]: Start difference. First operand has 249 places, 155 transitions, 1039 flow. Second operand 13 states and 157 transitions. [2024-06-03 19:09:48,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 172 transitions, 1455 flow [2024-06-03 19:09:48,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 172 transitions, 1399 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:09:48,979 INFO L231 Difference]: Finished difference. Result has 245 places, 152 transitions, 1068 flow [2024-06-03 19:09:48,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1068, PETRI_PLACES=245, PETRI_TRANSITIONS=152} [2024-06-03 19:09:48,980 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-03 19:09:48,980 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 152 transitions, 1068 flow [2024-06-03 19:09:48,980 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) [2024-06-03 19:09:48,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:48,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:48,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-03 19:09:48,980 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)] === [2024-06-03 19:09:48,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:48,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1993425597, now seen corresponding path program 31 times [2024-06-03 19:09:48,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914147061] [2024-06-03 19:09:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:48,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:50,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:50,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914147061] [2024-06-03 19:09:50,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914147061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:50,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:50,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:50,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872862985] [2024-06-03 19:09:50,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:50,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:50,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:50,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:50,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:50,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:50,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 152 transitions, 1068 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) [2024-06-03 19:09:50,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:50,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:50,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:51,101 INFO L124 PetriNetUnfolderBase]: 372/806 cut-off events. [2024-06-03 19:09:51,101 INFO L125 PetriNetUnfolderBase]: For 125613/125616 co-relation queries the response was YES. [2024-06-03 19:09:51,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5097 conditions, 806 events. 372/806 cut-off events. For 125613/125616 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4469 event pairs, 85 based on Foata normal form. 6/807 useless extension candidates. Maximal degree in co-relation 4992. Up to 532 conditions per place. [2024-06-03 19:09:51,108 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 103 selfloop transitions, 51 changer transitions 11/168 dead transitions. [2024-06-03 19:09:51,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 168 transitions, 1466 flow [2024-06-03 19:09:51,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:51,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:51,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-03 19:09:51,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-03 19:09:51,109 INFO L175 Difference]: Start difference. First operand has 245 places, 152 transitions, 1068 flow. Second operand 12 states and 149 transitions. [2024-06-03 19:09:51,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 168 transitions, 1466 flow [2024-06-03 19:09:51,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 168 transitions, 1362 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-03 19:09:51,435 INFO L231 Difference]: Finished difference. Result has 242 places, 148 transitions, 1044 flow [2024-06-03 19:09:51,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1044, PETRI_PLACES=242, PETRI_TRANSITIONS=148} [2024-06-03 19:09:51,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-03 19:09:51,435 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 148 transitions, 1044 flow [2024-06-03 19:09:51,436 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) [2024-06-03 19:09:51,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:51,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:51,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-03 19:09:51,436 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)] === [2024-06-03 19:09:51,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash 514221349, now seen corresponding path program 32 times [2024-06-03 19:09:51,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:51,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536041378] [2024-06-03 19:09:51,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:51,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:52,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:52,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536041378] [2024-06-03 19:09:52,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536041378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:52,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:52,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:09:52,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115323101] [2024-06-03 19:09:52,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:52,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:09:52,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:52,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:09:52,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:09:52,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:52,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 148 transitions, 1044 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) [2024-06-03 19:09:52,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:52,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:52,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:53,149 INFO L124 PetriNetUnfolderBase]: 349/753 cut-off events. [2024-06-03 19:09:53,149 INFO L125 PetriNetUnfolderBase]: For 100904/100907 co-relation queries the response was YES. [2024-06-03 19:09:53,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4316 conditions, 753 events. 349/753 cut-off events. For 100904/100907 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4088 event pairs, 72 based on Foata normal form. 6/754 useless extension candidates. Maximal degree in co-relation 4212. Up to 489 conditions per place. [2024-06-03 19:09:53,155 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 48 changer transitions 12/163 dead transitions. [2024-06-03 19:09:53,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 163 transitions, 1430 flow [2024-06-03 19:09:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:09:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:09:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-03 19:09:53,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-03 19:09:53,156 INFO L175 Difference]: Start difference. First operand has 242 places, 148 transitions, 1044 flow. Second operand 11 states and 139 transitions. [2024-06-03 19:09:53,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 163 transitions, 1430 flow [2024-06-03 19:09:53,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 163 transitions, 1320 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:09:53,398 INFO L231 Difference]: Finished difference. Result has 236 places, 143 transitions, 1010 flow [2024-06-03 19:09:53,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1010, PETRI_PLACES=236, PETRI_TRANSITIONS=143} [2024-06-03 19:09:53,398 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-03 19:09:53,398 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 143 transitions, 1010 flow [2024-06-03 19:09:53,398 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) [2024-06-03 19:09:53,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:53,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:53,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-03 19:09:53,398 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)] === [2024-06-03 19:09:53,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:53,399 INFO L85 PathProgramCache]: Analyzing trace with hash -549230907, now seen corresponding path program 33 times [2024-06-03 19:09:53,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:53,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383546987] [2024-06-03 19:09:53,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:53,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:55,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:55,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383546987] [2024-06-03 19:09:55,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383546987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:55,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:55,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:09:55,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215154381] [2024-06-03 19:09:55,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:55,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:09:55,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:55,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:09:55,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:09:55,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:55,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 143 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) [2024-06-03 19:09:55,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:55,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:55,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:56,042 INFO L124 PetriNetUnfolderBase]: 344/741 cut-off events. [2024-06-03 19:09:56,042 INFO L125 PetriNetUnfolderBase]: For 108084/108084 co-relation queries the response was YES. [2024-06-03 19:09:56,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4237 conditions, 741 events. 344/741 cut-off events. For 108084/108084 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3983 event pairs, 73 based on Foata normal form. 8/747 useless extension candidates. Maximal degree in co-relation 4135. Up to 644 conditions per place. [2024-06-03 19:09:56,048 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 15 changer transitions 9/159 dead transitions. [2024-06-03 19:09:56,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 159 transitions, 1396 flow [2024-06-03 19:09:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:09:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:09:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-03 19:09:56,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-03 19:09:56,049 INFO L175 Difference]: Start difference. First operand has 236 places, 143 transitions, 1010 flow. Second operand 12 states and 137 transitions. [2024-06-03 19:09:56,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 159 transitions, 1396 flow [2024-06-03 19:09:56,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 159 transitions, 1292 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:09:56,273 INFO L231 Difference]: Finished difference. Result has 230 places, 140 transitions, 923 flow [2024-06-03 19:09:56,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=923, PETRI_PLACES=230, PETRI_TRANSITIONS=140} [2024-06-03 19:09:56,274 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-03 19:09:56,274 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 140 transitions, 923 flow [2024-06-03 19:09:56,274 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) [2024-06-03 19:09:56,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:56,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:56,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-03 19:09:56,274 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)] === [2024-06-03 19:09:56,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:56,275 INFO L85 PathProgramCache]: Analyzing trace with hash -585859949, now seen corresponding path program 34 times [2024-06-03 19:09:56,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:56,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241332036] [2024-06-03 19:09:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:56,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:09:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:09:57,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:09:57,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241332036] [2024-06-03 19:09:57,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241332036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:09:57,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:09:57,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:09:57,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61887975] [2024-06-03 19:09:57,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:09:57,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:09:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:09:57,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:09:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:09:57,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:09:57,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 140 transitions, 923 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) [2024-06-03 19:09:57,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:09:57,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:09:57,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:09:58,105 INFO L124 PetriNetUnfolderBase]: 350/763 cut-off events. [2024-06-03 19:09:58,105 INFO L125 PetriNetUnfolderBase]: For 113704/113704 co-relation queries the response was YES. [2024-06-03 19:09:58,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 763 events. 350/763 cut-off events. For 113704/113704 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4156 event pairs, 82 based on Foata normal form. 6/767 useless extension candidates. Maximal degree in co-relation 4551. Up to 594 conditions per place. [2024-06-03 19:09:58,110 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 128 selfloop transitions, 15 changer transitions 12/158 dead transitions. [2024-06-03 19:09:58,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 158 transitions, 1481 flow [2024-06-03 19:09:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:09:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:09:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-03 19:09:58,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-03 19:09:58,111 INFO L175 Difference]: Start difference. First operand has 230 places, 140 transitions, 923 flow. Second operand 11 states and 134 transitions. [2024-06-03 19:09:58,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 158 transitions, 1481 flow [2024-06-03 19:09:58,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 158 transitions, 1443 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:09:58,365 INFO L231 Difference]: Finished difference. Result has 227 places, 132 transitions, 865 flow [2024-06-03 19:09:58,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=865, PETRI_PLACES=227, PETRI_TRANSITIONS=132} [2024-06-03 19:09:58,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-03 19:09:58,366 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 132 transitions, 865 flow [2024-06-03 19:09:58,366 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) [2024-06-03 19:09:58,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:09:58,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:09:58,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-03 19:09:58,366 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)] === [2024-06-03 19:09:58,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:09:58,366 INFO L85 PathProgramCache]: Analyzing trace with hash -577528079, now seen corresponding path program 35 times [2024-06-03 19:09:58,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:09:58,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693028180] [2024-06-03 19:09:58,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:09:58,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:09:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:00,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:00,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693028180] [2024-06-03 19:10:00,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693028180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:00,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:00,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:00,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868502899] [2024-06-03 19:10:00,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:00,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:00,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:00,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:00,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:00,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:00,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 132 transitions, 865 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) [2024-06-03 19:10:00,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:00,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:00,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:00,570 INFO L124 PetriNetUnfolderBase]: 337/740 cut-off events. [2024-06-03 19:10:00,570 INFO L125 PetriNetUnfolderBase]: For 111020/111020 co-relation queries the response was YES. [2024-06-03 19:10:00,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 740 events. 337/740 cut-off events. For 111020/111020 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4028 event pairs, 82 based on Foata normal form. 6/744 useless extension candidates. Maximal degree in co-relation 4429. Up to 633 conditions per place. [2024-06-03 19:10:00,576 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 123 selfloop transitions, 11 changer transitions 13/150 dead transitions. [2024-06-03 19:10:00,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 150 transitions, 1232 flow [2024-06-03 19:10:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:00,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-03 19:10:00,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-03 19:10:00,576 INFO L175 Difference]: Start difference. First operand has 227 places, 132 transitions, 865 flow. Second operand 12 states and 137 transitions. [2024-06-03 19:10:00,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 150 transitions, 1232 flow [2024-06-03 19:10:00,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 150 transitions, 1183 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-03 19:10:00,827 INFO L231 Difference]: Finished difference. Result has 222 places, 129 transitions, 824 flow [2024-06-03 19:10:00,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=824, PETRI_PLACES=222, PETRI_TRANSITIONS=129} [2024-06-03 19:10:00,827 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-03 19:10:00,827 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 129 transitions, 824 flow [2024-06-03 19:10:00,828 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) [2024-06-03 19:10:00,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:00,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:10:00,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-03 19:10:00,828 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)] === [2024-06-03 19:10:00,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:00,828 INFO L85 PathProgramCache]: Analyzing trace with hash 557213459, now seen corresponding path program 36 times [2024-06-03 19:10:00,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:00,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017347494] [2024-06-03 19:10:00,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:00,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:02,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:02,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017347494] [2024-06-03 19:10:02,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017347494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:02,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:02,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:02,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562568514] [2024-06-03 19:10:02,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:02,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:02,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:02,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:02,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:02,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:02,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 129 transitions, 824 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) [2024-06-03 19:10:02,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:02,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:02,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:03,011 INFO L124 PetriNetUnfolderBase]: 326/719 cut-off events. [2024-06-03 19:10:03,011 INFO L125 PetriNetUnfolderBase]: For 108368/108368 co-relation queries the response was YES. [2024-06-03 19:10:03,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4411 conditions, 719 events. 326/719 cut-off events. For 108368/108368 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3885 event pairs, 80 based on Foata normal form. 6/723 useless extension candidates. Maximal degree in co-relation 4314. Up to 609 conditions per place. [2024-06-03 19:10:03,017 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 12 changer transitions 13/147 dead transitions. [2024-06-03 19:10:03,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 147 transitions, 1184 flow [2024-06-03 19:10:03,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:10:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:10:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-03 19:10:03,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-03 19:10:03,018 INFO L175 Difference]: Start difference. First operand has 222 places, 129 transitions, 824 flow. Second operand 13 states and 146 transitions. [2024-06-03 19:10:03,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 147 transitions, 1184 flow [2024-06-03 19:10:03,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 147 transitions, 1152 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-03 19:10:03,217 INFO L231 Difference]: Finished difference. Result has 218 places, 125 transitions, 799 flow [2024-06-03 19:10:03,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=799, PETRI_PLACES=218, PETRI_TRANSITIONS=125} [2024-06-03 19:10:03,218 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-03 19:10:03,218 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 125 transitions, 799 flow [2024-06-03 19:10:03,218 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) [2024-06-03 19:10:03,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:03,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:10:03,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-03 19:10:03,218 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)] === [2024-06-03 19:10:03,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:03,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1420537405, now seen corresponding path program 37 times [2024-06-03 19:10:03,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:03,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732520888] [2024-06-03 19:10:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:03,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:05,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:05,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732520888] [2024-06-03 19:10:05,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732520888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:05,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:05,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:05,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858218005] [2024-06-03 19:10:05,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:05,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:05,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:05,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:05,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:05,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:05,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 125 transitions, 799 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) [2024-06-03 19:10:05,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:05,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:05,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:05,696 INFO L124 PetriNetUnfolderBase]: 308/681 cut-off events. [2024-06-03 19:10:05,696 INFO L125 PetriNetUnfolderBase]: For 98566/98566 co-relation queries the response was YES. [2024-06-03 19:10:05,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4026 conditions, 681 events. 308/681 cut-off events. For 98566/98566 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3579 event pairs, 73 based on Foata normal form. 6/685 useless extension candidates. Maximal degree in co-relation 3932. Up to 570 conditions per place. [2024-06-03 19:10:05,700 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 114 selfloop transitions, 10 changer transitions 16/143 dead transitions. [2024-06-03 19:10:05,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 143 transitions, 1119 flow [2024-06-03 19:10:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:10:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:10:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-03 19:10:05,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485576923076923 [2024-06-03 19:10:05,701 INFO L175 Difference]: Start difference. First operand has 218 places, 125 transitions, 799 flow. Second operand 13 states and 145 transitions. [2024-06-03 19:10:05,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 143 transitions, 1119 flow [2024-06-03 19:10:05,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 143 transitions, 1073 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-03 19:10:05,863 INFO L231 Difference]: Finished difference. Result has 212 places, 119 transitions, 733 flow [2024-06-03 19:10:05,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=733, PETRI_PLACES=212, PETRI_TRANSITIONS=119} [2024-06-03 19:10:05,864 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-03 19:10:05,864 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 119 transitions, 733 flow [2024-06-03 19:10:05,864 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) [2024-06-03 19:10:05,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:05,864 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] [2024-06-03 19:10:05,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-03 19:10:05,864 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)] === [2024-06-03 19:10:05,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:05,865 INFO L85 PathProgramCache]: Analyzing trace with hash 235228296, now seen corresponding path program 1 times [2024-06-03 19:10:05,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:05,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409247075] [2024-06-03 19:10:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:05,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:07,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:07,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409247075] [2024-06-03 19:10:07,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409247075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:07,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:07,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:07,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207405824] [2024-06-03 19:10:07,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:07,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:07,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:07,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:07,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:07,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:07,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 119 transitions, 733 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) [2024-06-03 19:10:07,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:07,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:07,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:07,807 INFO L124 PetriNetUnfolderBase]: 293/648 cut-off events. [2024-06-03 19:10:07,807 INFO L125 PetriNetUnfolderBase]: For 92740/92740 co-relation queries the response was YES. [2024-06-03 19:10:07,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3813 conditions, 648 events. 293/648 cut-off events. For 92740/92740 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3339 event pairs, 66 based on Foata normal form. 6/652 useless extension candidates. Maximal degree in co-relation 3722. Up to 517 conditions per place. [2024-06-03 19:10:07,811 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 109 selfloop transitions, 16 changer transitions 12/140 dead transitions. [2024-06-03 19:10:07,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 140 transitions, 1067 flow [2024-06-03 19:10:07,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:10:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:10:07,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 19:10:07,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-03 19:10:07,812 INFO L175 Difference]: Start difference. First operand has 212 places, 119 transitions, 733 flow. Second operand 11 states and 131 transitions. [2024-06-03 19:10:07,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 140 transitions, 1067 flow [2024-06-03 19:10:07,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 140 transitions, 1014 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 19:10:07,948 INFO L231 Difference]: Finished difference. Result has 202 places, 115 transitions, 699 flow [2024-06-03 19:10:07,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=699, PETRI_PLACES=202, PETRI_TRANSITIONS=115} [2024-06-03 19:10:07,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-03 19:10:07,948 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 115 transitions, 699 flow [2024-06-03 19:10:07,949 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) [2024-06-03 19:10:07,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:07,949 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] [2024-06-03 19:10:07,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-03 19:10:07,949 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)] === [2024-06-03 19:10:07,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:07,949 INFO L85 PathProgramCache]: Analyzing trace with hash 382837896, now seen corresponding path program 2 times [2024-06-03 19:10:07,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:07,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278294329] [2024-06-03 19:10:07,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:07,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:09,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:09,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278294329] [2024-06-03 19:10:09,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278294329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:09,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:09,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:09,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527424019] [2024-06-03 19:10:09,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:09,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:09,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:09,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:09,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:09,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:09,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 115 transitions, 699 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) [2024-06-03 19:10:09,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:09,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:09,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:09,988 INFO L124 PetriNetUnfolderBase]: 279/622 cut-off events. [2024-06-03 19:10:09,988 INFO L125 PetriNetUnfolderBase]: For 85781/85781 co-relation queries the response was YES. [2024-06-03 19:10:09,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3617 conditions, 622 events. 279/622 cut-off events. For 85781/85781 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3167 event pairs, 66 based on Foata normal form. 6/626 useless extension candidates. Maximal degree in co-relation 3530. Up to 501 conditions per place. [2024-06-03 19:10:09,992 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 106 selfloop transitions, 17 changer transitions 10/136 dead transitions. [2024-06-03 19:10:09,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 136 transitions, 1023 flow [2024-06-03 19:10:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:09,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:09,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-03 19:10:09,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:10:09,993 INFO L175 Difference]: Start difference. First operand has 202 places, 115 transitions, 699 flow. Second operand 12 states and 138 transitions. [2024-06-03 19:10:09,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 136 transitions, 1023 flow [2024-06-03 19:10:10,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 136 transitions, 983 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:10:10,113 INFO L231 Difference]: Finished difference. Result has 197 places, 112 transitions, 682 flow [2024-06-03 19:10:10,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=682, PETRI_PLACES=197, PETRI_TRANSITIONS=112} [2024-06-03 19:10:10,113 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-03 19:10:10,113 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 112 transitions, 682 flow [2024-06-03 19:10:10,113 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) [2024-06-03 19:10:10,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:10,113 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] [2024-06-03 19:10:10,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-03 19:10:10,113 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)] === [2024-06-03 19:10:10,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash 377331366, now seen corresponding path program 3 times [2024-06-03 19:10:10,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:10,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038408641] [2024-06-03 19:10:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:10,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:11,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:11,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:11,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038408641] [2024-06-03 19:10:11,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038408641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:11,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:11,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:10:11,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142946381] [2024-06-03 19:10:11,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:11,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:10:11,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:11,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:10:11,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:10:11,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:11,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 112 transitions, 682 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) [2024-06-03 19:10:11,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:11,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:11,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:11,774 INFO L124 PetriNetUnfolderBase]: 272/609 cut-off events. [2024-06-03 19:10:11,774 INFO L125 PetriNetUnfolderBase]: For 79119/79119 co-relation queries the response was YES. [2024-06-03 19:10:11,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3508 conditions, 609 events. 272/609 cut-off events. For 79119/79119 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3082 event pairs, 64 based on Foata normal form. 6/613 useless extension candidates. Maximal degree in co-relation 3424. Up to 483 conditions per place. [2024-06-03 19:10:11,778 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 98 selfloop transitions, 11 changer transitions 20/132 dead transitions. [2024-06-03 19:10:11,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 132 transitions, 996 flow [2024-06-03 19:10:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:10:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:10:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:10:11,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 19:10:11,779 INFO L175 Difference]: Start difference. First operand has 197 places, 112 transitions, 682 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:10:11,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 132 transitions, 996 flow [2024-06-03 19:10:11,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 132 transitions, 956 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:10:11,891 INFO L231 Difference]: Finished difference. Result has 192 places, 104 transitions, 630 flow [2024-06-03 19:10:11,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=630, PETRI_PLACES=192, PETRI_TRANSITIONS=104} [2024-06-03 19:10:11,891 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-03 19:10:11,891 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 104 transitions, 630 flow [2024-06-03 19:10:11,891 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) [2024-06-03 19:10:11,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:11,892 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] [2024-06-03 19:10:11,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-03 19:10:11,892 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)] === [2024-06-03 19:10:11,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:11,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1737495168, now seen corresponding path program 4 times [2024-06-03 19:10:11,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:11,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708646366] [2024-06-03 19:10:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:11,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:13,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:13,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708646366] [2024-06-03 19:10:13,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708646366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:13,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:13,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:13,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930636746] [2024-06-03 19:10:13,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:13,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:13,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:13,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:13,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:13,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:13,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 104 transitions, 630 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) [2024-06-03 19:10:13,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:13,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:13,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:14,247 INFO L124 PetriNetUnfolderBase]: 250/565 cut-off events. [2024-06-03 19:10:14,247 INFO L125 PetriNetUnfolderBase]: For 74816/74816 co-relation queries the response was YES. [2024-06-03 19:10:14,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3320 conditions, 565 events. 250/565 cut-off events. For 74816/74816 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2821 event pairs, 64 based on Foata normal form. 6/569 useless extension candidates. Maximal degree in co-relation 3238. Up to 454 conditions per place. [2024-06-03 19:10:14,251 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 15 changer transitions 10/122 dead transitions. [2024-06-03 19:10:14,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 122 transitions, 916 flow [2024-06-03 19:10:14,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:14,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:14,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-03 19:10:14,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-03 19:10:14,251 INFO L175 Difference]: Start difference. First operand has 192 places, 104 transitions, 630 flow. Second operand 12 states and 134 transitions. [2024-06-03 19:10:14,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 122 transitions, 916 flow [2024-06-03 19:10:14,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 122 transitions, 884 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-03 19:10:14,341 INFO L231 Difference]: Finished difference. Result has 184 places, 101 transitions, 617 flow [2024-06-03 19:10:14,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=617, PETRI_PLACES=184, PETRI_TRANSITIONS=101} [2024-06-03 19:10:14,341 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-03 19:10:14,341 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 101 transitions, 617 flow [2024-06-03 19:10:14,341 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) [2024-06-03 19:10:14,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:14,341 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] [2024-06-03 19:10:14,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-03 19:10:14,342 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)] === [2024-06-03 19:10:14,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:14,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1737639318, now seen corresponding path program 5 times [2024-06-03 19:10:14,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:14,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374481159] [2024-06-03 19:10:14,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:14,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:16,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:16,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374481159] [2024-06-03 19:10:16,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374481159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:16,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:16,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:16,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697809252] [2024-06-03 19:10:16,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:16,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:16,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:16,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:16,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:16,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:16,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 101 transitions, 617 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) [2024-06-03 19:10:16,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:16,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:16,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:16,885 INFO L124 PetriNetUnfolderBase]: 243/552 cut-off events. [2024-06-03 19:10:16,885 INFO L125 PetriNetUnfolderBase]: For 66600/66600 co-relation queries the response was YES. [2024-06-03 19:10:16,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3192 conditions, 552 events. 243/552 cut-off events. For 66600/66600 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2733 event pairs, 62 based on Foata normal form. 6/556 useless extension candidates. Maximal degree in co-relation 3114. Up to 436 conditions per place. [2024-06-03 19:10:16,888 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 85 selfloop transitions, 6 changer transitions 26/120 dead transitions. [2024-06-03 19:10:16,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 120 transitions, 901 flow [2024-06-03 19:10:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:16,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-03 19:10:16,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-03 19:10:16,889 INFO L175 Difference]: Start difference. First operand has 184 places, 101 transitions, 617 flow. Second operand 12 states and 134 transitions. [2024-06-03 19:10:16,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 120 transitions, 901 flow [2024-06-03 19:10:16,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 120 transitions, 865 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:10:16,970 INFO L231 Difference]: Finished difference. Result has 180 places, 90 transitions, 530 flow [2024-06-03 19:10:16,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=530, PETRI_PLACES=180, PETRI_TRANSITIONS=90} [2024-06-03 19:10:16,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-03 19:10:16,971 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 90 transitions, 530 flow [2024-06-03 19:10:16,971 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) [2024-06-03 19:10:16,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:16,971 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] [2024-06-03 19:10:16,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-03 19:10:16,971 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)] === [2024-06-03 19:10:16,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:16,971 INFO L85 PathProgramCache]: Analyzing trace with hash -261516250, now seen corresponding path program 6 times [2024-06-03 19:10:16,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:16,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670671249] [2024-06-03 19:10:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:16,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:18,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:18,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670671249] [2024-06-03 19:10:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670671249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:18,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:18,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:18,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170856818] [2024-06-03 19:10:18,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:18,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:18,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:18,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:18,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:18,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:18,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 90 transitions, 530 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) [2024-06-03 19:10:18,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:18,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:18,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:19,325 INFO L124 PetriNetUnfolderBase]: 220/499 cut-off events. [2024-06-03 19:10:19,325 INFO L125 PetriNetUnfolderBase]: For 62601/62601 co-relation queries the response was YES. [2024-06-03 19:10:19,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2954 conditions, 499 events. 220/499 cut-off events. For 62601/62601 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2416 event pairs, 62 based on Foata normal form. 6/503 useless extension candidates. Maximal degree in co-relation 2878. Up to 406 conditions per place. [2024-06-03 19:10:19,328 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 80 selfloop transitions, 10 changer transitions 12/105 dead transitions. [2024-06-03 19:10:19,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 105 transitions, 770 flow [2024-06-03 19:10:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-03 19:10:19,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:10:19,329 INFO L175 Difference]: Start difference. First operand has 180 places, 90 transitions, 530 flow. Second operand 12 states and 132 transitions. [2024-06-03 19:10:19,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 105 transitions, 770 flow [2024-06-03 19:10:19,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 105 transitions, 739 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-03 19:10:19,410 INFO L231 Difference]: Finished difference. Result has 164 places, 86 transitions, 503 flow [2024-06-03 19:10:19,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=503, PETRI_PLACES=164, PETRI_TRANSITIONS=86} [2024-06-03 19:10:19,410 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-03 19:10:19,410 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 86 transitions, 503 flow [2024-06-03 19:10:19,410 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) [2024-06-03 19:10:19,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:19,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:10:19,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-03 19:10:19,411 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)] === [2024-06-03 19:10:19,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:19,411 INFO L85 PathProgramCache]: Analyzing trace with hash -460962190, now seen corresponding path program 7 times [2024-06-03 19:10:19,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:19,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039966684] [2024-06-03 19:10:19,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:19,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:21,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:21,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039966684] [2024-06-03 19:10:21,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039966684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:21,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:21,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:21,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752590945] [2024-06-03 19:10:21,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:21,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:21,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:21,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:21,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:21,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:21,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 86 transitions, 503 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) [2024-06-03 19:10:21,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:21,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:21,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:21,803 INFO L124 PetriNetUnfolderBase]: 212/481 cut-off events. [2024-06-03 19:10:21,803 INFO L125 PetriNetUnfolderBase]: For 51522/51522 co-relation queries the response was YES. [2024-06-03 19:10:21,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2756 conditions, 481 events. 212/481 cut-off events. For 51522/51522 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2305 event pairs, 60 based on Foata normal form. 6/485 useless extension candidates. Maximal degree in co-relation 2687. Up to 388 conditions per place. [2024-06-03 19:10:21,805 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 7 changer transitions 17/102 dead transitions. [2024-06-03 19:10:21,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 102 transitions, 739 flow [2024-06-03 19:10:21,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:21,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:21,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-03 19:10:21,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-03 19:10:21,806 INFO L175 Difference]: Start difference. First operand has 164 places, 86 transitions, 503 flow. Second operand 12 states and 131 transitions. [2024-06-03 19:10:21,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 102 transitions, 739 flow [2024-06-03 19:10:21,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 102 transitions, 707 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 19:10:21,868 INFO L231 Difference]: Finished difference. Result has 158 places, 80 transitions, 463 flow [2024-06-03 19:10:21,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=463, PETRI_PLACES=158, PETRI_TRANSITIONS=80} [2024-06-03 19:10:21,868 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-03 19:10:21,868 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 80 transitions, 463 flow [2024-06-03 19:10:21,868 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) [2024-06-03 19:10:21,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:21,868 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] [2024-06-03 19:10:21,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-03 19:10:21,869 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)] === [2024-06-03 19:10:21,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:21,869 INFO L85 PathProgramCache]: Analyzing trace with hash -207996206, now seen corresponding path program 8 times [2024-06-03 19:10:21,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:21,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823646274] [2024-06-03 19:10:21,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:21,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:23,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:23,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823646274] [2024-06-03 19:10:23,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823646274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:23,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:23,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:23,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282075199] [2024-06-03 19:10:23,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:23,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:23,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:23,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:23,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:23,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:23,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 80 transitions, 463 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) [2024-06-03 19:10:23,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:23,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:23,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:24,144 INFO L124 PetriNetUnfolderBase]: 199/452 cut-off events. [2024-06-03 19:10:24,144 INFO L125 PetriNetUnfolderBase]: For 46912/46916 co-relation queries the response was YES. [2024-06-03 19:10:24,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 452 events. 199/452 cut-off events. For 46912/46916 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2121 event pairs, 66 based on Foata normal form. 10/460 useless extension candidates. Maximal degree in co-relation 2505. Up to 360 conditions per place. [2024-06-03 19:10:24,147 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 11 changer transitions 9/93 dead transitions. [2024-06-03 19:10:24,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 93 transitions, 673 flow [2024-06-03 19:10:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:10:24,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:10:24,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 19:10:24,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-03 19:10:24,148 INFO L175 Difference]: Start difference. First operand has 158 places, 80 transitions, 463 flow. Second operand 11 states and 123 transitions. [2024-06-03 19:10:24,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 93 transitions, 673 flow [2024-06-03 19:10:24,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 93 transitions, 647 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 19:10:24,196 INFO L231 Difference]: Finished difference. Result has 147 places, 76 transitions, 442 flow [2024-06-03 19:10:24,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=442, PETRI_PLACES=147, PETRI_TRANSITIONS=76} [2024-06-03 19:10:24,196 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-03 19:10:24,196 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 76 transitions, 442 flow [2024-06-03 19:10:24,196 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) [2024-06-03 19:10:24,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:24,197 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] [2024-06-03 19:10:24,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-03 19:10:24,197 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)] === [2024-06-03 19:10:24,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:24,197 INFO L85 PathProgramCache]: Analyzing trace with hash -401935616, now seen corresponding path program 9 times [2024-06-03 19:10:24,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:24,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524059794] [2024-06-03 19:10:24,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:24,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:26,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:26,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524059794] [2024-06-03 19:10:26,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524059794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:26,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:26,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:26,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80552000] [2024-06-03 19:10:26,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:26,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:26,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:26,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:26,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:26,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:26,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 76 transitions, 442 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) [2024-06-03 19:10:26,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:26,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:26,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:27,436 INFO L124 PetriNetUnfolderBase]: 176/401 cut-off events. [2024-06-03 19:10:27,436 INFO L125 PetriNetUnfolderBase]: For 31168/31172 co-relation queries the response was YES. [2024-06-03 19:10:27,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2026 conditions, 401 events. 176/401 cut-off events. For 31168/31172 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1794 event pairs, 47 based on Foata normal form. 10/409 useless extension candidates. Maximal degree in co-relation 1965. Up to 317 conditions per place. [2024-06-03 19:10:27,438 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 10 changer transitions 10/91 dead transitions. [2024-06-03 19:10:27,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 91 transitions, 652 flow [2024-06-03 19:10:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:27,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-03 19:10:27,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-03 19:10:27,439 INFO L175 Difference]: Start difference. First operand has 147 places, 76 transitions, 442 flow. Second operand 12 states and 130 transitions. [2024-06-03 19:10:27,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 91 transitions, 652 flow [2024-06-03 19:10:27,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 91 transitions, 622 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 19:10:27,484 INFO L231 Difference]: Finished difference. Result has 142 places, 73 transitions, 420 flow [2024-06-03 19:10:27,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=420, PETRI_PLACES=142, PETRI_TRANSITIONS=73} [2024-06-03 19:10:27,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-03 19:10:27,485 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 73 transitions, 420 flow [2024-06-03 19:10:27,485 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) [2024-06-03 19:10:27,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:27,485 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] [2024-06-03 19:10:27,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-03 19:10:27,485 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)] === [2024-06-03 19:10:27,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:27,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1231217092, now seen corresponding path program 10 times [2024-06-03 19:10:27,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:27,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455073499] [2024-06-03 19:10:27,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:27,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:29,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:29,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455073499] [2024-06-03 19:10:29,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455073499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:29,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:29,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:29,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200637874] [2024-06-03 19:10:29,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:29,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:29,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:29,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:29,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:29,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:29,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 73 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) [2024-06-03 19:10:29,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:29,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:29,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:29,913 INFO L124 PetriNetUnfolderBase]: 169/388 cut-off events. [2024-06-03 19:10:29,913 INFO L125 PetriNetUnfolderBase]: For 27602/27602 co-relation queries the response was YES. [2024-06-03 19:10:29,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1929 conditions, 388 events. 169/388 cut-off events. For 27602/27602 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1718 event pairs, 45 based on Foata normal form. 6/392 useless extension candidates. Maximal degree in co-relation 1871. Up to 299 conditions per place. [2024-06-03 19:10:29,914 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 58 selfloop transitions, 3 changer transitions 25/89 dead transitions. [2024-06-03 19:10:29,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 89 transitions, 628 flow [2024-06-03 19:10:29,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:29,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-03 19:10:29,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-03 19:10:29,915 INFO L175 Difference]: Start difference. First operand has 142 places, 73 transitions, 420 flow. Second operand 12 states and 130 transitions. [2024-06-03 19:10:29,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 89 transitions, 628 flow [2024-06-03 19:10:29,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 89 transitions, 602 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:10:29,951 INFO L231 Difference]: Finished difference. Result has 137 places, 63 transitions, 354 flow [2024-06-03 19:10:29,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=354, PETRI_PLACES=137, PETRI_TRANSITIONS=63} [2024-06-03 19:10:29,952 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-03 19:10:29,952 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 63 transitions, 354 flow [2024-06-03 19:10:29,952 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) [2024-06-03 19:10:29,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:29,952 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] [2024-06-03 19:10:29,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-03 19:10:29,952 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)] === [2024-06-03 19:10:29,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:29,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1166351232, now seen corresponding path program 11 times [2024-06-03 19:10:29,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:29,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225315729] [2024-06-03 19:10:29,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:29,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:31,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:31,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225315729] [2024-06-03 19:10:31,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225315729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:31,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:31,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:31,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436010884] [2024-06-03 19:10:31,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:31,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:31,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:31,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:31,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:32,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:32,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 63 transitions, 354 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) [2024-06-03 19:10:32,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:32,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:32,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:32,328 INFO L124 PetriNetUnfolderBase]: 150/342 cut-off events. [2024-06-03 19:10:32,328 INFO L125 PetriNetUnfolderBase]: For 25284/25288 co-relation queries the response was YES. [2024-06-03 19:10:32,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 342 events. 150/342 cut-off events. For 25284/25288 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1465 event pairs, 45 based on Foata normal form. 10/351 useless extension candidates. Maximal degree in co-relation 1692. Up to 214 conditions per place. [2024-06-03 19:10:32,329 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 42 selfloop transitions, 20 changer transitions 11/76 dead transitions. [2024-06-03 19:10:32,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 76 transitions, 528 flow [2024-06-03 19:10:32,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:32,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-03 19:10:32,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-03 19:10:32,330 INFO L175 Difference]: Start difference. First operand has 137 places, 63 transitions, 354 flow. Second operand 12 states and 129 transitions. [2024-06-03 19:10:32,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 76 transitions, 528 flow [2024-06-03 19:10:32,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 76 transitions, 502 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-03 19:10:32,353 INFO L231 Difference]: Finished difference. Result has 120 places, 59 transitions, 350 flow [2024-06-03 19:10:32,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=350, PETRI_PLACES=120, PETRI_TRANSITIONS=59} [2024-06-03 19:10:32,353 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-03 19:10:32,353 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 59 transitions, 350 flow [2024-06-03 19:10:32,353 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) [2024-06-03 19:10:32,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:32,353 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] [2024-06-03 19:10:32,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-03 19:10:32,353 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)] === [2024-06-03 19:10:32,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:32,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1724296252, now seen corresponding path program 12 times [2024-06-03 19:10:32,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:32,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051648183] [2024-06-03 19:10:32,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:32,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:34,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:34,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051648183] [2024-06-03 19:10:34,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051648183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:34,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:34,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:34,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136729686] [2024-06-03 19:10:34,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:34,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:34,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:34,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:34,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:34,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:34,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 59 transitions, 350 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) [2024-06-03 19:10:34,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:34,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:34,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:34,939 INFO L124 PetriNetUnfolderBase]: 127/291 cut-off events. [2024-06-03 19:10:34,939 INFO L125 PetriNetUnfolderBase]: For 13696/13700 co-relation queries the response was YES. [2024-06-03 19:10:34,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 291 events. 127/291 cut-off events. For 13696/13700 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1175 event pairs, 32 based on Foata normal form. 10/300 useless extension candidates. Maximal degree in co-relation 1240. Up to 171 conditions per place. [2024-06-03 19:10:34,940 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 39 selfloop transitions, 20 changer transitions 10/72 dead transitions. [2024-06-03 19:10:34,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 72 transitions, 516 flow [2024-06-03 19:10:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-03 19:10:34,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-03 19:10:34,941 INFO L175 Difference]: Start difference. First operand has 120 places, 59 transitions, 350 flow. Second operand 12 states and 127 transitions. [2024-06-03 19:10:34,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 72 transitions, 516 flow [2024-06-03 19:10:34,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 72 transitions, 468 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 19:10:34,952 INFO L231 Difference]: Finished difference. Result has 114 places, 56 transitions, 329 flow [2024-06-03 19:10:34,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=329, PETRI_PLACES=114, PETRI_TRANSITIONS=56} [2024-06-03 19:10:34,952 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-03 19:10:34,952 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 56 transitions, 329 flow [2024-06-03 19:10:34,952 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) [2024-06-03 19:10:34,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:34,953 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] [2024-06-03 19:10:34,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-03 19:10:34,953 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)] === [2024-06-03 19:10:34,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1729802782, now seen corresponding path program 13 times [2024-06-03 19:10:34,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:34,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638212467] [2024-06-03 19:10:34,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:34,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:37,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:37,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:37,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638212467] [2024-06-03 19:10:37,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638212467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:37,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:37,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:37,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530396117] [2024-06-03 19:10:37,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:37,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:37,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:37,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:37,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:37,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:37,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 56 transitions, 329 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) [2024-06-03 19:10:37,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:37,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:37,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:37,651 INFO L124 PetriNetUnfolderBase]: 120/278 cut-off events. [2024-06-03 19:10:37,651 INFO L125 PetriNetUnfolderBase]: For 11704/11704 co-relation queries the response was YES. [2024-06-03 19:10:37,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 278 events. 120/278 cut-off events. For 11704/11704 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1092 event pairs, 28 based on Foata normal form. 6/283 useless extension candidates. Maximal degree in co-relation 1164. Up to 147 conditions per place. [2024-06-03 19:10:37,652 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 38 selfloop transitions, 17 changer transitions 12/70 dead transitions. [2024-06-03 19:10:37,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 70 transitions, 493 flow [2024-06-03 19:10:37,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:37,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-03 19:10:37,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 19:10:37,653 INFO L175 Difference]: Start difference. First operand has 114 places, 56 transitions, 329 flow. Second operand 12 states and 128 transitions. [2024-06-03 19:10:37,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 70 transitions, 493 flow [2024-06-03 19:10:37,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 70 transitions, 447 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:10:37,661 INFO L231 Difference]: Finished difference. Result has 108 places, 50 transitions, 292 flow [2024-06-03 19:10:37,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=292, PETRI_PLACES=108, PETRI_TRANSITIONS=50} [2024-06-03 19:10:37,662 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-03 19:10:37,662 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 50 transitions, 292 flow [2024-06-03 19:10:37,662 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) [2024-06-03 19:10:37,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:37,662 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] [2024-06-03 19:10:37,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-03 19:10:37,662 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)] === [2024-06-03 19:10:37,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:37,662 INFO L85 PathProgramCache]: Analyzing trace with hash -511608968, now seen corresponding path program 14 times [2024-06-03 19:10:37,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:37,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921164432] [2024-06-03 19:10:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:37,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:39,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:39,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:39,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921164432] [2024-06-03 19:10:39,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921164432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:39,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:39,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:39,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392846692] [2024-06-03 19:10:39,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:39,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:39,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:39,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:39,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:39,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:39,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 50 transitions, 292 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) [2024-06-03 19:10:39,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:39,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:39,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:40,127 INFO L124 PetriNetUnfolderBase]: 107/249 cut-off events. [2024-06-03 19:10:40,127 INFO L125 PetriNetUnfolderBase]: For 10398/10398 co-relation queries the response was YES. [2024-06-03 19:10:40,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 249 events. 107/249 cut-off events. For 10398/10398 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 938 event pairs, 30 based on Foata normal form. 6/254 useless extension candidates. Maximal degree in co-relation 1060. Up to 158 conditions per place. [2024-06-03 19:10:40,129 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 35 selfloop transitions, 14 changer transitions 11/63 dead transitions. [2024-06-03 19:10:40,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 63 transitions, 440 flow [2024-06-03 19:10:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:40,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:40,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-03 19:10:40,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:10:40,129 INFO L175 Difference]: Start difference. First operand has 108 places, 50 transitions, 292 flow. Second operand 12 states and 132 transitions. [2024-06-03 19:10:40,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 63 transitions, 440 flow [2024-06-03 19:10:40,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 63 transitions, 394 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-03 19:10:40,136 INFO L231 Difference]: Finished difference. Result has 98 places, 46 transitions, 258 flow [2024-06-03 19:10:40,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=258, PETRI_PLACES=98, PETRI_TRANSITIONS=46} [2024-06-03 19:10:40,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-03 19:10:40,136 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 46 transitions, 258 flow [2024-06-03 19:10:40,136 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) [2024-06-03 19:10:40,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:40,137 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] [2024-06-03 19:10:40,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-03 19:10:40,137 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)] === [2024-06-03 19:10:40,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:40,137 INFO L85 PathProgramCache]: Analyzing trace with hash -989412216, now seen corresponding path program 15 times [2024-06-03 19:10:40,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:40,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623627592] [2024-06-03 19:10:40,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:40,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:42,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:42,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623627592] [2024-06-03 19:10:42,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623627592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:42,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:42,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:42,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731185593] [2024-06-03 19:10:42,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:42,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:42,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:42,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:42,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:42,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:42,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 46 transitions, 258 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) [2024-06-03 19:10:42,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:42,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:42,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:42,607 INFO L124 PetriNetUnfolderBase]: 84/198 cut-off events. [2024-06-03 19:10:42,607 INFO L125 PetriNetUnfolderBase]: For 5056/5056 co-relation queries the response was YES. [2024-06-03 19:10:42,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 198 events. 84/198 cut-off events. For 5056/5056 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 670 event pairs, 17 based on Foata normal form. 6/203 useless extension candidates. Maximal degree in co-relation 698. Up to 133 conditions per place. [2024-06-03 19:10:42,608 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 34 selfloop transitions, 4 changer transitions 18/59 dead transitions. [2024-06-03 19:10:42,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 59 transitions, 398 flow [2024-06-03 19:10:42,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-03 19:10:42,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-03 19:10:42,609 INFO L175 Difference]: Start difference. First operand has 98 places, 46 transitions, 258 flow. Second operand 12 states and 125 transitions. [2024-06-03 19:10:42,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 59 transitions, 398 flow [2024-06-03 19:10:42,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 59 transitions, 362 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 19:10:42,612 INFO L231 Difference]: Finished difference. Result has 92 places, 39 transitions, 202 flow [2024-06-03 19:10:42,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=202, PETRI_PLACES=92, PETRI_TRANSITIONS=39} [2024-06-03 19:10:42,613 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-03 19:10:42,613 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 39 transitions, 202 flow [2024-06-03 19:10:42,613 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) [2024-06-03 19:10:42,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:42,613 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] [2024-06-03 19:10:42,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-03 19:10:42,613 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)] === [2024-06-03 19:10:42,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:42,613 INFO L85 PathProgramCache]: Analyzing trace with hash -705548378, now seen corresponding path program 16 times [2024-06-03 19:10:42,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:42,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074916308] [2024-06-03 19:10:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:42,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:44,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:44,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:44,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074916308] [2024-06-03 19:10:44,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074916308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:44,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:44,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:44,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066620660] [2024-06-03 19:10:44,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:44,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:44,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:44,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:44,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:44,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:44,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 39 transitions, 202 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) [2024-06-03 19:10:44,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:44,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:44,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:44,773 INFO L124 PetriNetUnfolderBase]: 73/171 cut-off events. [2024-06-03 19:10:44,773 INFO L125 PetriNetUnfolderBase]: For 4038/4038 co-relation queries the response was YES. [2024-06-03 19:10:44,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 171 events. 73/171 cut-off events. For 4038/4038 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 540 event pairs, 17 based on Foata normal form. 6/176 useless extension candidates. Maximal degree in co-relation 588. Up to 90 conditions per place. [2024-06-03 19:10:44,774 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 27 selfloop transitions, 12 changer transitions 10/52 dead transitions. [2024-06-03 19:10:44,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 52 transitions, 328 flow [2024-06-03 19:10:44,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:44,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:44,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-03 19:10:44,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-03 19:10:44,774 INFO L175 Difference]: Start difference. First operand has 92 places, 39 transitions, 202 flow. Second operand 12 states and 125 transitions. [2024-06-03 19:10:44,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 52 transitions, 328 flow [2024-06-03 19:10:44,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 52 transitions, 310 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-03 19:10:44,777 INFO L231 Difference]: Finished difference. Result has 81 places, 36 transitions, 197 flow [2024-06-03 19:10:44,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=197, PETRI_PLACES=81, PETRI_TRANSITIONS=36} [2024-06-03 19:10:44,777 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-03 19:10:44,778 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 36 transitions, 197 flow [2024-06-03 19:10:44,778 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) [2024-06-03 19:10:44,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:44,778 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] [2024-06-03 19:10:44,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-03 19:10:44,778 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)] === [2024-06-03 19:10:44,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:44,778 INFO L85 PathProgramCache]: Analyzing trace with hash -711054908, now seen corresponding path program 17 times [2024-06-03 19:10:44,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:44,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813471293] [2024-06-03 19:10:44,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:44,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:46,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:46,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:46,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813471293] [2024-06-03 19:10:46,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813471293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:46,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:46,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:46,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476349919] [2024-06-03 19:10:46,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:46,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:46,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:46,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:46,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:46,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:46,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 36 transitions, 197 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) [2024-06-03 19:10:46,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:46,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:46,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:46,950 INFO L124 PetriNetUnfolderBase]: 66/158 cut-off events. [2024-06-03 19:10:46,951 INFO L125 PetriNetUnfolderBase]: For 2916/2916 co-relation queries the response was YES. [2024-06-03 19:10:46,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 158 events. 66/158 cut-off events. For 2916/2916 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 480 event pairs, 15 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 544. Up to 72 conditions per place. [2024-06-03 19:10:46,951 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 23 selfloop transitions, 8 changer transitions 16/50 dead transitions. [2024-06-03 19:10:46,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 50 transitions, 321 flow [2024-06-03 19:10:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-03 19:10:46,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-03 19:10:46,952 INFO L175 Difference]: Start difference. First operand has 81 places, 36 transitions, 197 flow. Second operand 12 states and 125 transitions. [2024-06-03 19:10:46,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 50 transitions, 321 flow [2024-06-03 19:10:46,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 50 transitions, 291 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:10:46,954 INFO L231 Difference]: Finished difference. Result has 77 places, 30 transitions, 159 flow [2024-06-03 19:10:46,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=159, PETRI_PLACES=77, PETRI_TRANSITIONS=30} [2024-06-03 19:10:46,954 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-03 19:10:46,954 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 30 transitions, 159 flow [2024-06-03 19:10:46,955 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) [2024-06-03 19:10:46,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:46,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:10:46,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-03 19:10:46,955 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)] === [2024-06-03 19:10:46,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:46,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1891877256, now seen corresponding path program 18 times [2024-06-03 19:10:46,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:46,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856159732] [2024-06-03 19:10:46,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:46,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:49,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:49,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856159732] [2024-06-03 19:10:49,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856159732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:49,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:49,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:49,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327154363] [2024-06-03 19:10:49,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:49,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:49,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:49,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:49,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:49,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 30 transitions, 159 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) [2024-06-03 19:10:49,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:49,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:49,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:49,823 INFO L124 PetriNetUnfolderBase]: 53/129 cut-off events. [2024-06-03 19:10:49,823 INFO L125 PetriNetUnfolderBase]: For 2402/2402 co-relation queries the response was YES. [2024-06-03 19:10:49,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 129 events. 53/129 cut-off events. For 2402/2402 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 346 event pairs, 15 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 448. Up to 62 conditions per place. [2024-06-03 19:10:49,824 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 20 selfloop transitions, 10 changer transitions 10/43 dead transitions. [2024-06-03 19:10:49,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 43 transitions, 267 flow [2024-06-03 19:10:49,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-03 19:10:49,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-03 19:10:49,824 INFO L175 Difference]: Start difference. First operand has 77 places, 30 transitions, 159 flow. Second operand 12 states and 122 transitions. [2024-06-03 19:10:49,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 43 transitions, 267 flow [2024-06-03 19:10:49,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 43 transitions, 239 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 19:10:49,826 INFO L231 Difference]: Finished difference. Result has 67 places, 27 transitions, 140 flow [2024-06-03 19:10:49,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=140, PETRI_PLACES=67, PETRI_TRANSITIONS=27} [2024-06-03 19:10:49,826 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-03 19:10:49,826 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 27 transitions, 140 flow [2024-06-03 19:10:49,826 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) [2024-06-03 19:10:49,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:49,826 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] [2024-06-03 19:10:49,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-03 19:10:49,826 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)] === [2024-06-03 19:10:49,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:49,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1891733106, now seen corresponding path program 19 times [2024-06-03 19:10:49,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:49,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806816242] [2024-06-03 19:10:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:49,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:51,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:51,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:51,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806816242] [2024-06-03 19:10:51,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806816242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:51,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:51,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:51,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483727168] [2024-06-03 19:10:51,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:51,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:51,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:51,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:51,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:52,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:52,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 27 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) [2024-06-03 19:10:52,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:52,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:52,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:52,387 INFO L124 PetriNetUnfolderBase]: 46/116 cut-off events. [2024-06-03 19:10:52,387 INFO L125 PetriNetUnfolderBase]: For 1356/1356 co-relation queries the response was YES. [2024-06-03 19:10:52,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 116 events. 46/116 cut-off events. For 1356/1356 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 285 event pairs, 4 based on Foata normal form. 6/121 useless extension candidates. Maximal degree in co-relation 386. Up to 38 conditions per place. [2024-06-03 19:10:52,388 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 19 selfloop transitions, 9 changer transitions 10/41 dead transitions. [2024-06-03 19:10:52,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 41 transitions, 246 flow [2024-06-03 19:10:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:52,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:52,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-03 19:10:52,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-03 19:10:52,388 INFO L175 Difference]: Start difference. First operand has 67 places, 27 transitions, 140 flow. Second operand 12 states and 121 transitions. [2024-06-03 19:10:52,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 41 transitions, 246 flow [2024-06-03 19:10:52,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 41 transitions, 220 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:10:52,390 INFO L231 Difference]: Finished difference. Result has 63 places, 23 transitions, 116 flow [2024-06-03 19:10:52,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=116, PETRI_PLACES=63, PETRI_TRANSITIONS=23} [2024-06-03 19:10:52,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-03 19:10:52,390 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 23 transitions, 116 flow [2024-06-03 19:10:52,390 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) [2024-06-03 19:10:52,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:10:52,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:10:52,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-03 19:10:52,390 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)] === [2024-06-03 19:10:52,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:10:52,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2091179046, now seen corresponding path program 20 times [2024-06-03 19:10:52,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:10:52,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117477775] [2024-06-03 19:10:52,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:10:52,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:10:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:10:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:10:54,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:10:54,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117477775] [2024-06-03 19:10:54,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117477775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:10:54,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:10:54,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:10:54,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562544338] [2024-06-03 19:10:54,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:10:54,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:10:54,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:10:54,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:10:54,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:10:54,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:10:54,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 23 transitions, 116 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) [2024-06-03 19:10:54,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:10:54,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:10:54,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:10:54,677 INFO L124 PetriNetUnfolderBase]: 20/60 cut-off events. [2024-06-03 19:10:54,677 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-06-03 19:10:54,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 60 events. 20/60 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 6/65 useless extension candidates. Maximal degree in co-relation 164. Up to 24 conditions per place. [2024-06-03 19:10:54,677 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-03 19:10:54,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 31 transitions, 162 flow [2024-06-03 19:10:54,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:10:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:10:54,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-03 19:10:54,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2942708333333333 [2024-06-03 19:10:54,678 INFO L175 Difference]: Start difference. First operand has 63 places, 23 transitions, 116 flow. Second operand 12 states and 113 transitions. [2024-06-03 19:10:54,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 31 transitions, 162 flow [2024-06-03 19:10:54,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 31 transitions, 124 flow, removed 1 selfloop flow, removed 19 redundant places. [2024-06-03 19:10:54,678 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-06-03 19:10:54,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=38, 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=12, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-06-03 19:10:54,678 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-03 19:10:54,679 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-06-03 19:10:54,679 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) [2024-06-03 19:10:54,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 19:10:54,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 19:10:54,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 19:10:54,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 19:10:54,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-03 19:10:54,696 INFO L445 BasicCegarLoop]: Path program histogram: [37, 32, 20, 19, 17, 16, 15, 10, 7, 6, 6, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:10:54,699 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 19:10:54,700 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 19:10:54,703 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 19:10:54,703 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 19:10:54,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 07:10:54 BasicIcfg [2024-06-03 19:10:54,704 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 19:10:54,705 INFO L158 Benchmark]: Toolchain (without parser) took 457400.47ms. Allocated memory was 144.7MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 105.6MB in the beginning and 970.1MB in the end (delta: -864.5MB). Peak memory consumption was 341.0MB. Max. memory is 16.1GB. [2024-06-03 19:10:54,707 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 100.7MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:10:54,707 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 144.7MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:10:54,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 551.11ms. Allocated memory is still 144.7MB. Free memory was 105.6MB in the beginning and 90.4MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-03 19:10:54,708 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.85ms. Allocated memory is still 144.7MB. Free memory was 90.4MB in the beginning and 87.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 19:10:54,708 INFO L158 Benchmark]: Boogie Preprocessor took 77.19ms. Allocated memory is still 144.7MB. Free memory was 87.2MB in the beginning and 83.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 19:10:54,708 INFO L158 Benchmark]: RCFGBuilder took 601.52ms. Allocated memory was 144.7MB in the beginning and 207.6MB in the end (delta: 62.9MB). Free memory was 83.5MB in the beginning and 142.5MB in the end (delta: -58.9MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2024-06-03 19:10:54,708 INFO L158 Benchmark]: TraceAbstraction took 456099.07ms. Allocated memory was 207.6MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 141.4MB in the beginning and 970.1MB in the end (delta: -828.6MB). Peak memory consumption was 315.4MB. Max. memory is 16.1GB. [2024-06-03 19:10:54,709 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 0.16ms. Allocated memory is still 100.7MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 144.7MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 551.11ms. Allocated memory is still 144.7MB. Free memory was 105.6MB in the beginning and 90.4MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.85ms. Allocated memory is still 144.7MB. Free memory was 90.4MB in the beginning and 87.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.19ms. Allocated memory is still 144.7MB. Free memory was 87.2MB in the beginning and 83.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 601.52ms. Allocated memory was 144.7MB in the beginning and 207.6MB in the end (delta: 62.9MB). Free memory was 83.5MB in the beginning and 142.5MB in the end (delta: -58.9MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. * TraceAbstraction took 456099.07ms. Allocated memory was 207.6MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 141.4MB in the beginning and 970.1MB in the end (delta: -828.6MB). Peak memory consumption was 315.4MB. 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: 456.0s, OverallIterations: 220, TraceHistogramMax: 1, PathProgramHistogramMax: 37, EmptinessCheckTime: 0.0s, AutomataDifference: 158.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14593 SdHoareTripleChecker+Valid, 62.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12538 mSDsluCounter, 5108 SdHoareTripleChecker+Invalid, 54.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4505 mSDsCounter, 2507 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101216 IncrementalHoareTripleChecker+Invalid, 103723 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2507 mSolverCounterUnsat, 603 mSDtfsCounter, 101216 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2614 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2595 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5684 ImplicationChecksByTransitivity, 84.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3093occurred in iteration=117, InterpolantAutomatonStates: 2257, 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, 1.8s SatisfiabilityAnalysisTime, 294.4s InterpolantComputationTime, 3869 NumberOfCodeBlocks, 3869 NumberOfCodeBlocksAsserted, 220 NumberOfCheckSat, 3649 ConstructedInterpolants, 0 QuantifiedInterpolants, 191994 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 220 InterpolantComputations, 220 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! [2024-06-03 19:10:54,852 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