./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.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/mix054_pso.opt_rmo.opt_tso.oepc_tso.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/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 15:21:43,506 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:21:43,607 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:21:43,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:21:43,612 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:21:43,668 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:21:43,669 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:21:43,669 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:21:43,670 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:21:43,673 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:21:43,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:21:43,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:21:43,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:21:43,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:21:43,675 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:21:43,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:21:43,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:21:43,676 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:21:43,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:21:43,676 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:21:43,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:21:43,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:21:43,678 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:21:43,678 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:21:43,678 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:21:43,678 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:21:43,679 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:21:43,679 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:21:43,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:21:43,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:21:43,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:21:43,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:21:43,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:21:43,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:21:43,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:21:43,681 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:21:43,681 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:21:43,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:21:43,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:21:43,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:21:43,682 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:21:43,682 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:21:43,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:21:43,683 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:21:43,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:21:43,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:21:43,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:21:43,960 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:21:43,961 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:21:43,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-04 15:21:45,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:21:45,332 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:21:45,332 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-04 15:21:45,374 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46488c10/55b9b78489464336be52e4ad98dea59f/FLAG94b114867 [2024-06-04 15:21:45,386 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46488c10/55b9b78489464336be52e4ad98dea59f [2024-06-04 15:21:45,388 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:21:45,388 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:21:45,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-04 15:21:45,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:21:45,520 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:21:45,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:21:45,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:21:45,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:21:45,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:21:45" (1/2) ... [2024-06-04 15:21:45,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db79a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:45, skipping insertion in model container [2024-06-04 15:21:45,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:21:45" (1/2) ... [2024-06-04 15:21:45,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4610f933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:45, skipping insertion in model container [2024-06-04 15:21:45,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:21:45" (2/2) ... [2024-06-04 15:21:45,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db79a31 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:45, skipping insertion in model container [2024-06-04 15:21:45,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:21:45" (2/2) ... [2024-06-04 15:21:45,529 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:21:45,583 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:21:45,585 INFO L97 edCorrectnessWitness]: Location invariant before [L795-L795] (((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0) [2024-06-04 15:21:45,585 INFO L97 edCorrectnessWitness]: Location invariant before [L796-L796] (((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0) [2024-06-04 15:21:45,585 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:21:45,585 INFO L106 edCorrectnessWitness]: ghost_update [L793-L793] multithreaded = 1; [2024-06-04 15:21:45,628 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:21:45,985 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:21:45,997 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:21:46,099 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:21:46,131 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:21:46,132 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:46 WrapperNode [2024-06-04 15:21:46,133 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:21:46,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:21:46,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:21:46,134 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:21:46,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:46" (1/1) ... [2024-06-04 15:21:46,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:46" (1/1) ... [2024-06-04 15:21:46,201 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 131 [2024-06-04 15:21:46,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:21:46,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:21:46,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:21:46,202 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:21:46,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:46" (1/1) ... [2024-06-04 15:21:46,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:46" (1/1) ... [2024-06-04 15:21:46,222 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:46" (1/1) ... [2024-06-04 15:21:46,237 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-04 15:21:46,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:46" (1/1) ... [2024-06-04 15:21:46,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:46" (1/1) ... [2024-06-04 15:21:46,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:46" (1/1) ... [2024-06-04 15:21:46,262 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:46" (1/1) ... [2024-06-04 15:21:46,264 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:46" (1/1) ... [2024-06-04 15:21:46,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:46" (1/1) ... [2024-06-04 15:21:46,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:21:46,277 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:21:46,277 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:21:46,278 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:21:46,278 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:46" (1/1) ... [2024-06-04 15:21:46,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:21:46,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:21:46,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-04 15:21:46,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-04 15:21:46,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:21:46,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:21:46,403 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:21:46,404 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:21:46,404 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:21:46,404 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:21:46,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:21:46,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:21:46,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:21:46,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:21:46,405 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 15:21:46,543 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:21:46,545 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:21:46,881 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:21:46,881 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:21:47,030 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:21:47,031 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:21:47,032 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:21:47 BoogieIcfgContainer [2024-06-04 15:21:47,032 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:21:47,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:21:47,034 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:21:47,037 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:21:47,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:21:45" (1/4) ... [2024-06-04 15:21:47,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fe6b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:21:47, skipping insertion in model container [2024-06-04 15:21:47,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:21:45" (2/4) ... [2024-06-04 15:21:47,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fe6b5a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:21:47, skipping insertion in model container [2024-06-04 15:21:47,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:46" (3/4) ... [2024-06-04 15:21:47,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fe6b5a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:21:47, skipping insertion in model container [2024-06-04 15:21:47,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:21:47" (4/4) ... [2024-06-04 15:21:47,042 INFO L112 eAbstractionObserver]: Analyzing ICFG mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-04 15:21:47,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:21:47,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 15:21:47,060 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:21:47,112 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:21:47,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-04 15:21:47,177 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-04 15:21:47,186 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:21:47,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:21:47,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-04 15:21:47,192 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-04 15:21:47,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:21:47,208 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;@310a3231, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:21:47,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 15:21:47,230 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:21:47,230 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:21:47,230 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:21:47,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:47,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:21:47,232 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:47,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:47,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1451147604, now seen corresponding path program 1 times [2024-06-04 15:21:47,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:47,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585759077] [2024-06-04 15:21:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:47,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:48,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:48,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585759077] [2024-06-04 15:21:48,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585759077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:48,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:48,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:21:48,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189683857] [2024-06-04 15:21:48,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:48,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:21:48,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:48,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:21:48,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:21:48,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-04 15:21:48,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:48,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:48,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-04 15:21:48,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:48,500 INFO L124 PetriNetUnfolderBase]: 135/262 cut-off events. [2024-06-04 15:21:48,500 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-04 15:21:48,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 262 events. 135/262 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 942 event pairs, 79 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 516. Up to 243 conditions per place. [2024-06-04 15:21:48,504 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 22 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-04 15:21:48,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 115 flow [2024-06-04 15:21:48,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:21:48,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:21:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-06-04 15:21:48,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-04 15:21:48,515 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 48 transitions. [2024-06-04 15:21:48,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 115 flow [2024-06-04 15:21:48,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 15:21:48,518 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-04 15:21:48,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-04 15:21:48,522 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-04 15:21:48,522 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-04 15:21:48,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:48,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:48,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:48,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:21:48,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:48,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:48,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1310885271, now seen corresponding path program 1 times [2024-06-04 15:21:48,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:48,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570125979] [2024-06-04 15:21:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:48,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:49,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:49,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570125979] [2024-06-04 15:21:49,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570125979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:49,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:49,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:21:49,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16820478] [2024-06-04 15:21:49,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:49,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:21:49,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:49,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:21:49,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:21:49,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-04 15:21:49,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:49,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:49,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-04 15:21:49,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:49,128 INFO L124 PetriNetUnfolderBase]: 159/292 cut-off events. [2024-06-04 15:21:49,129 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-04 15:21:49,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 292 events. 159/292 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 994 event pairs, 79 based on Foata normal form. 2/293 useless extension candidates. Maximal degree in co-relation 667. Up to 274 conditions per place. [2024-06-04 15:21:49,131 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 27 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-04 15:21:49,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 159 flow [2024-06-04 15:21:49,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:21:49,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:21:49,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-06-04 15:21:49,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-04 15:21:49,133 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 58 transitions. [2024-06-04 15:21:49,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 159 flow [2024-06-04 15:21:49,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:21:49,134 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-04 15:21:49,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-04 15:21:49,135 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-04 15:21:49,135 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-04 15:21:49,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:49,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:49,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:49,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:21:49,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:49,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:49,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2001504973, now seen corresponding path program 1 times [2024-06-04 15:21:49,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:49,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115849682] [2024-06-04 15:21:49,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:49,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:49,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:49,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115849682] [2024-06-04 15:21:49,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115849682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:49,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:49,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:21:49,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853424784] [2024-06-04 15:21:49,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:49,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 15:21:49,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:49,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 15:21:49,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 15:21:49,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-04 15:21:49,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:49,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:49,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-04 15:21:49,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:49,837 INFO L124 PetriNetUnfolderBase]: 153/282 cut-off events. [2024-06-04 15:21:49,838 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2024-06-04 15:21:49,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 282 events. 153/282 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 949 event pairs, 43 based on Foata normal form. 4/285 useless extension candidates. Maximal degree in co-relation 714. Up to 246 conditions per place. [2024-06-04 15:21:49,841 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 32 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-04 15:21:49,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 211 flow [2024-06-04 15:21:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:21:49,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:21:49,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-06-04 15:21:49,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-06-04 15:21:49,845 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 71 transitions. [2024-06-04 15:21:49,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 211 flow [2024-06-04 15:21:49,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 15:21:49,847 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 117 flow [2024-06-04 15:21:49,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-06-04 15:21:49,848 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-06-04 15:21:49,848 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 117 flow [2024-06-04 15:21:49,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:49,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:49,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:49,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:21:49,849 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:49,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:49,850 INFO L85 PathProgramCache]: Analyzing trace with hash 699105586, now seen corresponding path program 1 times [2024-06-04 15:21:49,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:49,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620417881] [2024-06-04 15:21:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:49,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:50,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:50,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620417881] [2024-06-04 15:21:50,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620417881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:50,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:50,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:21:50,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742539440] [2024-06-04 15:21:50,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:50,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:21:50,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:21:50,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:21:50,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-04 15:21:50,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:50,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:50,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-04 15:21:50,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:50,924 INFO L124 PetriNetUnfolderBase]: 149/274 cut-off events. [2024-06-04 15:21:50,925 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2024-06-04 15:21:50,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 274 events. 149/274 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 896 event pairs, 24 based on Foata normal form. 4/277 useless extension candidates. Maximal degree in co-relation 756. Up to 220 conditions per place. [2024-06-04 15:21:50,927 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 32 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-04 15:21:50,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 225 flow [2024-06-04 15:21:50,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:21:50,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:21:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-04 15:21:50,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-04 15:21:50,928 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 117 flow. Second operand 6 states and 78 transitions. [2024-06-04 15:21:50,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 225 flow [2024-06-04 15:21:50,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 210 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 15:21:50,931 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 114 flow [2024-06-04 15:21:50,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-06-04 15:21:50,932 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-04 15:21:50,932 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 114 flow [2024-06-04 15:21:50,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:50,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:50,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:50,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:21:50,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:50,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:50,933 INFO L85 PathProgramCache]: Analyzing trace with hash 51822220, now seen corresponding path program 1 times [2024-06-04 15:21:50,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:50,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782403859] [2024-06-04 15:21:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:50,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:51,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:51,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782403859] [2024-06-04 15:21:51,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782403859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:51,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:51,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:21:51,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417745767] [2024-06-04 15:21:51,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:51,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:21:51,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:51,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:21:51,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:21:51,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-04 15:21:51,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:51,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:51,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-04 15:21:51,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:51,696 INFO L124 PetriNetUnfolderBase]: 120/238 cut-off events. [2024-06-04 15:21:51,696 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2024-06-04 15:21:51,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 238 events. 120/238 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 812 event pairs, 41 based on Foata normal form. 1/238 useless extension candidates. Maximal degree in co-relation 669. Up to 214 conditions per place. [2024-06-04 15:21:51,698 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 25 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2024-06-04 15:21:51,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 194 flow [2024-06-04 15:21:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:21:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:21:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-06-04 15:21:51,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-04 15:21:51,700 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 114 flow. Second operand 5 states and 58 transitions. [2024-06-04 15:21:51,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 194 flow [2024-06-04 15:21:51,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 174 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 15:21:51,702 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 121 flow [2024-06-04 15:21:51,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2024-06-04 15:21:51,703 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-06-04 15:21:51,704 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 121 flow [2024-06-04 15:21:51,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:51,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:51,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:51,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:21:51,705 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:51,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:51,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2052118479, now seen corresponding path program 1 times [2024-06-04 15:21:51,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:51,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949985530] [2024-06-04 15:21:51,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:51,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:52,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:52,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949985530] [2024-06-04 15:21:52,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949985530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:52,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:52,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:21:52,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015521049] [2024-06-04 15:21:52,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:52,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:21:52,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:52,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:21:52,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:21:52,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:21:52,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 121 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:52,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:52,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:21:52,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:52,577 INFO L124 PetriNetUnfolderBase]: 148/273 cut-off events. [2024-06-04 15:21:52,577 INFO L125 PetriNetUnfolderBase]: For 463/463 co-relation queries the response was YES. [2024-06-04 15:21:52,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 273 events. 148/273 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 901 event pairs, 51 based on Foata normal form. 1/273 useless extension candidates. Maximal degree in co-relation 818. Up to 252 conditions per place. [2024-06-04 15:21:52,579 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 30 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-04 15:21:52,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 225 flow [2024-06-04 15:21:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:21:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:21:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-04 15:21:52,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 15:21:52,581 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 121 flow. Second operand 6 states and 65 transitions. [2024-06-04 15:21:52,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 225 flow [2024-06-04 15:21:52,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 214 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 15:21:52,584 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 141 flow [2024-06-04 15:21:52,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-06-04 15:21:52,586 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-06-04 15:21:52,586 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 141 flow [2024-06-04 15:21:52,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:52,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:52,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:52,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:21:52,587 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:52,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:52,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1738433557, now seen corresponding path program 2 times [2024-06-04 15:21:52,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:52,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863910498] [2024-06-04 15:21:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:52,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:53,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:53,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863910498] [2024-06-04 15:21:53,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863910498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:53,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:53,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:21:53,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744342128] [2024-06-04 15:21:53,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:53,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:21:53,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:53,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:21:53,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:21:53,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:21:53,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 141 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:53,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:53,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:21:53,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:53,293 INFO L124 PetriNetUnfolderBase]: 146/271 cut-off events. [2024-06-04 15:21:53,293 INFO L125 PetriNetUnfolderBase]: For 635/637 co-relation queries the response was YES. [2024-06-04 15:21:53,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 271 events. 146/271 cut-off events. For 635/637 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 898 event pairs, 55 based on Foata normal form. 3/273 useless extension candidates. Maximal degree in co-relation 871. Up to 243 conditions per place. [2024-06-04 15:21:53,295 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 28 selfloop transitions, 11 changer transitions 0/41 dead transitions. [2024-06-04 15:21:53,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 251 flow [2024-06-04 15:21:53,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:21:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:21:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-04 15:21:53,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-04 15:21:53,297 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 141 flow. Second operand 6 states and 64 transitions. [2024-06-04 15:21:53,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 251 flow [2024-06-04 15:21:53,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 236 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-04 15:21:53,299 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 183 flow [2024-06-04 15:21:53,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-06-04 15:21:53,299 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-06-04 15:21:53,299 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 183 flow [2024-06-04 15:21:53,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:53,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:53,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:53,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:21:53,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:53,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:53,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1738425621, now seen corresponding path program 1 times [2024-06-04 15:21:53,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:53,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603410217] [2024-06-04 15:21:53,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:53,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:54,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:54,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603410217] [2024-06-04 15:21:54,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603410217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:54,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:54,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:21:54,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28947450] [2024-06-04 15:21:54,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:54,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:21:54,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:54,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:21:54,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:21:54,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:21:54,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 183 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:54,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:54,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:21:54,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:54,212 INFO L124 PetriNetUnfolderBase]: 144/267 cut-off events. [2024-06-04 15:21:54,213 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2024-06-04 15:21:54,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 267 events. 144/267 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 878 event pairs, 50 based on Foata normal form. 1/267 useless extension candidates. Maximal degree in co-relation 923. Up to 249 conditions per place. [2024-06-04 15:21:54,214 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 32 selfloop transitions, 10 changer transitions 0/44 dead transitions. [2024-06-04 15:21:54,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 291 flow [2024-06-04 15:21:54,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:21:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:21:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-06-04 15:21:54,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 15:21:54,217 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 183 flow. Second operand 7 states and 70 transitions. [2024-06-04 15:21:54,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 291 flow [2024-06-04 15:21:54,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 279 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 15:21:54,221 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 208 flow [2024-06-04 15:21:54,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=208, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-06-04 15:21:54,227 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2024-06-04 15:21:54,227 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 208 flow [2024-06-04 15:21:54,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:54,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:54,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:54,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:21:54,228 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:54,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:54,228 INFO L85 PathProgramCache]: Analyzing trace with hash -808955857, now seen corresponding path program 1 times [2024-06-04 15:21:54,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:54,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136064425] [2024-06-04 15:21:54,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:54,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:54,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:54,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136064425] [2024-06-04 15:21:54,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136064425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:54,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:54,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:21:54,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712332287] [2024-06-04 15:21:54,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:54,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:21:54,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:54,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:21:54,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:21:54,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:21:54,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 208 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:54,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:54,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:21:54,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:54,992 INFO L124 PetriNetUnfolderBase]: 150/277 cut-off events. [2024-06-04 15:21:54,993 INFO L125 PetriNetUnfolderBase]: For 1013/1013 co-relation queries the response was YES. [2024-06-04 15:21:54,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 277 events. 150/277 cut-off events. For 1013/1013 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 917 event pairs, 34 based on Foata normal form. 2/278 useless extension candidates. Maximal degree in co-relation 1017. Up to 235 conditions per place. [2024-06-04 15:21:55,001 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 41 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2024-06-04 15:21:55,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 364 flow [2024-06-04 15:21:55,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:21:55,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:21:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-04 15:21:55,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-04 15:21:55,004 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 208 flow. Second operand 7 states and 78 transitions. [2024-06-04 15:21:55,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 364 flow [2024-06-04 15:21:55,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 329 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:21:55,011 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 227 flow [2024-06-04 15:21:55,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=227, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-06-04 15:21:55,012 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2024-06-04 15:21:55,012 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 227 flow [2024-06-04 15:21:55,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:55,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:55,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:55,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:21:55,013 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:55,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:55,014 INFO L85 PathProgramCache]: Analyzing trace with hash -808835887, now seen corresponding path program 2 times [2024-06-04 15:21:55,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:55,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427536575] [2024-06-04 15:21:55,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:55,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:55,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:55,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427536575] [2024-06-04 15:21:55,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427536575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:55,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:55,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:21:55,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085813809] [2024-06-04 15:21:55,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:55,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:21:55,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:55,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:21:55,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:21:55,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:21:55,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 227 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:55,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:55,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:21:55,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:55,754 INFO L124 PetriNetUnfolderBase]: 161/295 cut-off events. [2024-06-04 15:21:55,755 INFO L125 PetriNetUnfolderBase]: For 1334/1334 co-relation queries the response was YES. [2024-06-04 15:21:55,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 295 events. 161/295 cut-off events. For 1334/1334 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 992 event pairs, 34 based on Foata normal form. 2/296 useless extension candidates. Maximal degree in co-relation 1177. Up to 240 conditions per place. [2024-06-04 15:21:55,757 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 40 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-04 15:21:55,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 419 flow [2024-06-04 15:21:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:21:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:21:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 15:21:55,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-04 15:21:55,758 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 227 flow. Second operand 7 states and 79 transitions. [2024-06-04 15:21:55,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 419 flow [2024-06-04 15:21:55,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 401 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-04 15:21:55,762 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 278 flow [2024-06-04 15:21:55,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-04 15:21:55,763 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-04 15:21:55,764 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 278 flow [2024-06-04 15:21:55,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:55,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:55,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:55,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:21:55,765 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:55,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:55,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1936706381, now seen corresponding path program 1 times [2024-06-04 15:21:55,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:55,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920070859] [2024-06-04 15:21:55,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:55,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:56,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:56,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920070859] [2024-06-04 15:21:56,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920070859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:56,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:56,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:21:56,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934608619] [2024-06-04 15:21:56,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:56,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:21:56,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:56,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:21:56,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:21:56,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:21:56,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 278 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:56,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:56,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:21:56,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:56,486 INFO L124 PetriNetUnfolderBase]: 164/300 cut-off events. [2024-06-04 15:21:56,487 INFO L125 PetriNetUnfolderBase]: For 1629/1629 co-relation queries the response was YES. [2024-06-04 15:21:56,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1296 conditions, 300 events. 164/300 cut-off events. For 1629/1629 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1015 event pairs, 34 based on Foata normal form. 1/300 useless extension candidates. Maximal degree in co-relation 1268. Up to 276 conditions per place. [2024-06-04 15:21:56,489 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 45 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2024-06-04 15:21:56,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 57 transitions, 424 flow [2024-06-04 15:21:56,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:21:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:21:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-04 15:21:56,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3476190476190476 [2024-06-04 15:21:56,491 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 278 flow. Second operand 7 states and 73 transitions. [2024-06-04 15:21:56,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 57 transitions, 424 flow [2024-06-04 15:21:56,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 404 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-04 15:21:56,494 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 299 flow [2024-06-04 15:21:56,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=299, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2024-06-04 15:21:56,495 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-04 15:21:56,495 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 299 flow [2024-06-04 15:21:56,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:56,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:56,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:56,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:21:56,495 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:56,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:56,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1943135471, now seen corresponding path program 2 times [2024-06-04 15:21:56,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:56,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110776054] [2024-06-04 15:21:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:56,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:57,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:57,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110776054] [2024-06-04 15:21:57,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110776054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:57,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:57,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:21:57,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990144663] [2024-06-04 15:21:57,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:57,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:21:57,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:57,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:21:57,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:21:57,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:21:57,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 299 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:57,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:57,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:21:57,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:57,330 INFO L124 PetriNetUnfolderBase]: 167/306 cut-off events. [2024-06-04 15:21:57,330 INFO L125 PetriNetUnfolderBase]: For 1945/1949 co-relation queries the response was YES. [2024-06-04 15:21:57,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 306 events. 167/306 cut-off events. For 1945/1949 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1040 event pairs, 38 based on Foata normal form. 5/310 useless extension candidates. Maximal degree in co-relation 1350. Up to 265 conditions per place. [2024-06-04 15:21:57,333 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 40 selfloop transitions, 17 changer transitions 0/59 dead transitions. [2024-06-04 15:21:57,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 59 transitions, 485 flow [2024-06-04 15:21:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:21:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:21:57,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-04 15:21:57,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-04 15:21:57,335 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 299 flow. Second operand 7 states and 75 transitions. [2024-06-04 15:21:57,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 59 transitions, 485 flow [2024-06-04 15:21:57,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 460 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 15:21:57,339 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 349 flow [2024-06-04 15:21:57,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=349, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-06-04 15:21:57,340 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-04 15:21:57,340 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 349 flow [2024-06-04 15:21:57,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:57,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:57,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:57,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:21:57,341 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:57,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:57,342 INFO L85 PathProgramCache]: Analyzing trace with hash -804194257, now seen corresponding path program 3 times [2024-06-04 15:21:57,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:57,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171424665] [2024-06-04 15:21:57,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:57,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:57,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:57,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171424665] [2024-06-04 15:21:57,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171424665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:57,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:57,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:21:57,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586732579] [2024-06-04 15:21:57,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:57,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:21:57,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:57,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:21:57,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:21:57,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:21:58,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 349 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:58,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:58,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:21:58,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:58,116 INFO L124 PetriNetUnfolderBase]: 163/300 cut-off events. [2024-06-04 15:21:58,116 INFO L125 PetriNetUnfolderBase]: For 2233/2237 co-relation queries the response was YES. [2024-06-04 15:21:58,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 300 events. 163/300 cut-off events. For 2233/2237 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1014 event pairs, 44 based on Foata normal form. 3/302 useless extension candidates. Maximal degree in co-relation 1361. Up to 232 conditions per place. [2024-06-04 15:21:58,119 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 41 selfloop transitions, 20 changer transitions 0/63 dead transitions. [2024-06-04 15:21:58,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 63 transitions, 539 flow [2024-06-04 15:21:58,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:21:58,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:21:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-04 15:21:58,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-04 15:21:58,120 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 349 flow. Second operand 7 states and 78 transitions. [2024-06-04 15:21:58,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 63 transitions, 539 flow [2024-06-04 15:21:58,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 513 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-04 15:21:58,125 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 390 flow [2024-06-04 15:21:58,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2024-06-04 15:21:58,127 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2024-06-04 15:21:58,127 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 390 flow [2024-06-04 15:21:58,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:58,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:58,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:58,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:21:58,128 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:58,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:58,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2096597613, now seen corresponding path program 3 times [2024-06-04 15:21:58,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:58,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064413318] [2024-06-04 15:21:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:58,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:58,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:58,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064413318] [2024-06-04 15:21:58,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064413318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:58,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:58,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:21:58,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928973854] [2024-06-04 15:21:58,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:58,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:21:58,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:58,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:21:58,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:21:58,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:21:58,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 390 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:58,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:58,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:21:58,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:58,883 INFO L124 PetriNetUnfolderBase]: 161/296 cut-off events. [2024-06-04 15:21:58,884 INFO L125 PetriNetUnfolderBase]: For 2361/2361 co-relation queries the response was YES. [2024-06-04 15:21:58,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1446 conditions, 296 events. 161/296 cut-off events. For 2361/2361 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1000 event pairs, 33 based on Foata normal form. 1/296 useless extension candidates. Maximal degree in co-relation 1413. Up to 278 conditions per place. [2024-06-04 15:21:58,886 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 48 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-04 15:21:58,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 60 transitions, 522 flow [2024-06-04 15:21:58,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:21:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:21:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-06-04 15:21:58,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 15:21:58,887 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 390 flow. Second operand 7 states and 70 transitions. [2024-06-04 15:21:58,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 60 transitions, 522 flow [2024-06-04 15:21:58,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 461 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-04 15:21:58,891 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 354 flow [2024-06-04 15:21:58,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-06-04 15:21:58,892 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-04 15:21:58,892 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 354 flow [2024-06-04 15:21:58,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:58,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:58,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:58,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:21:58,893 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:58,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:58,893 INFO L85 PathProgramCache]: Analyzing trace with hash -631458103, now seen corresponding path program 1 times [2024-06-04 15:21:58,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:58,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364998977] [2024-06-04 15:21:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:58,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:59,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:59,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:59,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364998977] [2024-06-04 15:21:59,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364998977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:59,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:59,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:21:59,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562508862] [2024-06-04 15:21:59,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:59,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:21:59,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:59,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:21:59,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:21:59,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:21:59,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 354 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:59,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:59,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:21:59,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:59,849 INFO L124 PetriNetUnfolderBase]: 158/291 cut-off events. [2024-06-04 15:21:59,850 INFO L125 PetriNetUnfolderBase]: For 2521/2521 co-relation queries the response was YES. [2024-06-04 15:21:59,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 291 events. 158/291 cut-off events. For 2521/2521 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 975 event pairs, 32 based on Foata normal form. 2/292 useless extension candidates. Maximal degree in co-relation 1339. Up to 267 conditions per place. [2024-06-04 15:21:59,851 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 49 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2024-06-04 15:21:59,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 62 transitions, 494 flow [2024-06-04 15:21:59,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:21:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:21:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 77 transitions. [2024-06-04 15:21:59,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32083333333333336 [2024-06-04 15:21:59,853 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 354 flow. Second operand 8 states and 77 transitions. [2024-06-04 15:21:59,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 62 transitions, 494 flow [2024-06-04 15:21:59,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 62 transitions, 469 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-04 15:21:59,856 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 355 flow [2024-06-04 15:21:59,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=355, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-06-04 15:21:59,856 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-04 15:21:59,857 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 355 flow [2024-06-04 15:21:59,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:59,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:59,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:59,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:21:59,857 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:59,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:59,857 INFO L85 PathProgramCache]: Analyzing trace with hash 692082734, now seen corresponding path program 1 times [2024-06-04 15:21:59,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:59,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921089594] [2024-06-04 15:21:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:59,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:00,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:00,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:00,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921089594] [2024-06-04 15:22:00,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921089594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:00,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:00,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:22:00,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599615282] [2024-06-04 15:22:00,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:00,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:22:00,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:00,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:22:00,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:22:00,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:00,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 355 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:00,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:00,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:00,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:00,795 INFO L124 PetriNetUnfolderBase]: 156/288 cut-off events. [2024-06-04 15:22:00,795 INFO L125 PetriNetUnfolderBase]: For 2610/2610 co-relation queries the response was YES. [2024-06-04 15:22:00,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 288 events. 156/288 cut-off events. For 2610/2610 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 963 event pairs, 31 based on Foata normal form. 1/288 useless extension candidates. Maximal degree in co-relation 1337. Up to 243 conditions per place. [2024-06-04 15:22:00,797 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 52 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-06-04 15:22:00,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 67 transitions, 521 flow [2024-06-04 15:22:00,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:22:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:22:00,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-04 15:22:00,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-04 15:22:00,798 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 355 flow. Second operand 7 states and 78 transitions. [2024-06-04 15:22:00,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 67 transitions, 521 flow [2024-06-04 15:22:00,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 493 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:22:00,802 INFO L231 Difference]: Finished difference. Result has 71 places, 53 transitions, 361 flow [2024-06-04 15:22:00,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=361, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2024-06-04 15:22:00,803 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-04 15:22:00,803 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 361 flow [2024-06-04 15:22:00,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:00,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:00,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:00,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:22:00,803 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:00,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:00,804 INFO L85 PathProgramCache]: Analyzing trace with hash 692173099, now seen corresponding path program 1 times [2024-06-04 15:22:00,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:00,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626383220] [2024-06-04 15:22:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:00,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:01,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:01,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626383220] [2024-06-04 15:22:01,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626383220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:01,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:01,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:22:01,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359693830] [2024-06-04 15:22:01,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:01,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:22:01,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:01,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:22:01,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:22:01,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:01,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 361 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:01,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:01,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:01,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:01,600 INFO L124 PetriNetUnfolderBase]: 162/298 cut-off events. [2024-06-04 15:22:01,601 INFO L125 PetriNetUnfolderBase]: For 3038/3038 co-relation queries the response was YES. [2024-06-04 15:22:01,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1444 conditions, 298 events. 162/298 cut-off events. For 3038/3038 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1010 event pairs, 30 based on Foata normal form. 2/299 useless extension candidates. Maximal degree in co-relation 1408. Up to 248 conditions per place. [2024-06-04 15:22:01,608 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 55 selfloop transitions, 14 changer transitions 0/71 dead transitions. [2024-06-04 15:22:01,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 71 transitions, 559 flow [2024-06-04 15:22:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-04 15:22:01,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 15:22:01,610 INFO L175 Difference]: Start difference. First operand has 71 places, 53 transitions, 361 flow. Second operand 8 states and 87 transitions. [2024-06-04 15:22:01,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 71 transitions, 559 flow [2024-06-04 15:22:01,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 71 transitions, 526 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 15:22:01,616 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 383 flow [2024-06-04 15:22:01,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=383, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2024-06-04 15:22:01,617 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-06-04 15:22:01,617 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 383 flow [2024-06-04 15:22:01,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:01,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:01,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:01,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:22:01,618 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:01,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:01,618 INFO L85 PathProgramCache]: Analyzing trace with hash 695892169, now seen corresponding path program 2 times [2024-06-04 15:22:01,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:01,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466390035] [2024-06-04 15:22:01,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:01,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:02,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:02,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:02,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466390035] [2024-06-04 15:22:02,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466390035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:02,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:02,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:22:02,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038025604] [2024-06-04 15:22:02,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:02,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:22:02,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:02,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:22:02,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:22:02,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:02,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 383 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:02,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:02,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:02,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:02,405 INFO L124 PetriNetUnfolderBase]: 208/372 cut-off events. [2024-06-04 15:22:02,406 INFO L125 PetriNetUnfolderBase]: For 4755/4755 co-relation queries the response was YES. [2024-06-04 15:22:02,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1944 conditions, 372 events. 208/372 cut-off events. For 4755/4755 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1361 event pairs, 33 based on Foata normal form. 2/373 useless extension candidates. Maximal degree in co-relation 1907. Up to 248 conditions per place. [2024-06-04 15:22:02,408 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 55 selfloop transitions, 23 changer transitions 0/80 dead transitions. [2024-06-04 15:22:02,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 735 flow [2024-06-04 15:22:02,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:02,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:02,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 15:22:02,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:22:02,410 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 383 flow. Second operand 8 states and 93 transitions. [2024-06-04 15:22:02,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 735 flow [2024-06-04 15:22:02,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 696 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:22:02,415 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 502 flow [2024-06-04 15:22:02,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2024-06-04 15:22:02,415 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-06-04 15:22:02,416 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 502 flow [2024-06-04 15:22:02,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:02,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:02,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:02,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:22:02,418 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:02,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:02,418 INFO L85 PathProgramCache]: Analyzing trace with hash 695897966, now seen corresponding path program 1 times [2024-06-04 15:22:02,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:02,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065391305] [2024-06-04 15:22:02,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:02,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:03,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:03,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065391305] [2024-06-04 15:22:03,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065391305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:03,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:03,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:22:03,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742360040] [2024-06-04 15:22:03,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:03,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:22:03,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:03,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:22:03,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:22:03,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:03,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 502 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:03,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:03,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:03,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:03,319 INFO L124 PetriNetUnfolderBase]: 204/367 cut-off events. [2024-06-04 15:22:03,319 INFO L125 PetriNetUnfolderBase]: For 5223/5223 co-relation queries the response was YES. [2024-06-04 15:22:03,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 367 events. 204/367 cut-off events. For 5223/5223 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1324 event pairs, 33 based on Foata normal form. 3/369 useless extension candidates. Maximal degree in co-relation 2006. Up to 256 conditions per place. [2024-06-04 15:22:03,322 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 52 selfloop transitions, 27 changer transitions 0/81 dead transitions. [2024-06-04 15:22:03,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 780 flow [2024-06-04 15:22:03,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:03,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:03,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-04 15:22:03,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:22:03,323 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 502 flow. Second operand 8 states and 90 transitions. [2024-06-04 15:22:03,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 780 flow [2024-06-04 15:22:03,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 81 transitions, 750 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-04 15:22:03,330 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 597 flow [2024-06-04 15:22:03,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=597, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-06-04 15:22:03,331 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-06-04 15:22:03,331 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 597 flow [2024-06-04 15:22:03,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:03,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:03,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:03,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:22:03,332 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:03,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:03,332 INFO L85 PathProgramCache]: Analyzing trace with hash 425924927, now seen corresponding path program 3 times [2024-06-04 15:22:03,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:03,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154976013] [2024-06-04 15:22:03,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:03,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:03,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:03,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154976013] [2024-06-04 15:22:03,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154976013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:03,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:03,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:22:03,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488977533] [2024-06-04 15:22:03,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:03,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:22:03,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:22:03,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:22:03,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:03,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 597 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:03,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:03,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:03,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:04,096 INFO L124 PetriNetUnfolderBase]: 195/353 cut-off events. [2024-06-04 15:22:04,096 INFO L125 PetriNetUnfolderBase]: For 5284/5284 co-relation queries the response was YES. [2024-06-04 15:22:04,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024 conditions, 353 events. 195/353 cut-off events. For 5284/5284 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1256 event pairs, 32 based on Foata normal form. 4/356 useless extension candidates. Maximal degree in co-relation 1981. Up to 242 conditions per place. [2024-06-04 15:22:04,099 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 53 selfloop transitions, 26 changer transitions 0/81 dead transitions. [2024-06-04 15:22:04,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 81 transitions, 833 flow [2024-06-04 15:22:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:04,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 15:22:04,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37916666666666665 [2024-06-04 15:22:04,100 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 597 flow. Second operand 8 states and 91 transitions. [2024-06-04 15:22:04,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 81 transitions, 833 flow [2024-06-04 15:22:04,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 81 transitions, 750 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-04 15:22:04,108 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 574 flow [2024-06-04 15:22:04,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=574, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2024-06-04 15:22:04,109 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-06-04 15:22:04,109 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 574 flow [2024-06-04 15:22:04,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:04,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:04,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:04,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:22:04,110 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:04,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:04,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1892007573, now seen corresponding path program 4 times [2024-06-04 15:22:04,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:04,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826281902] [2024-06-04 15:22:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:04,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:04,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:04,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826281902] [2024-06-04 15:22:04,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826281902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:04,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:04,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:22:04,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388523275] [2024-06-04 15:22:04,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:04,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:22:04,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:04,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:22:04,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:22:04,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:04,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 574 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:04,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:04,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:04,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:04,847 INFO L124 PetriNetUnfolderBase]: 234/418 cut-off events. [2024-06-04 15:22:04,847 INFO L125 PetriNetUnfolderBase]: For 7119/7123 co-relation queries the response was YES. [2024-06-04 15:22:04,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2438 conditions, 418 events. 234/418 cut-off events. For 7119/7123 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1562 event pairs, 45 based on Foata normal form. 5/422 useless extension candidates. Maximal degree in co-relation 2394. Up to 205 conditions per place. [2024-06-04 15:22:04,850 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 56 selfloop transitions, 34 changer transitions 0/92 dead transitions. [2024-06-04 15:22:04,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 1050 flow [2024-06-04 15:22:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-04 15:22:04,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-04 15:22:04,852 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 574 flow. Second operand 8 states and 98 transitions. [2024-06-04 15:22:04,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 1050 flow [2024-06-04 15:22:04,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 92 transitions, 1005 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-04 15:22:04,862 INFO L231 Difference]: Finished difference. Result has 89 places, 74 transitions, 709 flow [2024-06-04 15:22:04,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=709, PETRI_PLACES=89, PETRI_TRANSITIONS=74} [2024-06-04 15:22:04,862 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-04 15:22:04,862 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 74 transitions, 709 flow [2024-06-04 15:22:04,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:04,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:04,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:04,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:22:04,863 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:04,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:04,863 INFO L85 PathProgramCache]: Analyzing trace with hash 107658378, now seen corresponding path program 2 times [2024-06-04 15:22:04,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:04,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854368051] [2024-06-04 15:22:04,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:04,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:05,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:05,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854368051] [2024-06-04 15:22:05,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854368051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:05,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:05,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:22:05,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186677045] [2024-06-04 15:22:05,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:05,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:22:05,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:05,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:22:05,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:22:05,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:05,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 74 transitions, 709 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:05,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:05,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:05,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:05,727 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-04 15:22:05,727 INFO L125 PetriNetUnfolderBase]: For 7122/7126 co-relation queries the response was YES. [2024-06-04 15:22:05,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2484 conditions, 409 events. 228/409 cut-off events. For 7122/7126 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1525 event pairs, 45 based on Foata normal form. 4/412 useless extension candidates. Maximal degree in co-relation 2438. Up to 260 conditions per place. [2024-06-04 15:22:05,730 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 56 selfloop transitions, 36 changer transitions 0/94 dead transitions. [2024-06-04 15:22:05,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 94 transitions, 1145 flow [2024-06-04 15:22:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:05,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:05,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 15:22:05,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:22:05,731 INFO L175 Difference]: Start difference. First operand has 89 places, 74 transitions, 709 flow. Second operand 8 states and 95 transitions. [2024-06-04 15:22:05,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 94 transitions, 1145 flow [2024-06-04 15:22:05,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 94 transitions, 1036 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-04 15:22:05,742 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 787 flow [2024-06-04 15:22:05,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=787, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-06-04 15:22:05,743 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-04 15:22:05,743 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 787 flow [2024-06-04 15:22:05,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:05,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:05,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:05,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:22:05,743 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:05,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:05,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1150317767, now seen corresponding path program 5 times [2024-06-04 15:22:05,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:05,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039026438] [2024-06-04 15:22:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:05,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:06,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:06,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039026438] [2024-06-04 15:22:06,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039026438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:06,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:06,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:22:06,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075051270] [2024-06-04 15:22:06,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:06,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:22:06,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:06,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:22:06,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:22:06,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:06,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 787 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:06,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:06,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:06,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:06,510 INFO L124 PetriNetUnfolderBase]: 232/415 cut-off events. [2024-06-04 15:22:06,510 INFO L125 PetriNetUnfolderBase]: For 7289/7293 co-relation queries the response was YES. [2024-06-04 15:22:06,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 415 events. 232/415 cut-off events. For 7289/7293 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1560 event pairs, 43 based on Foata normal form. 3/417 useless extension candidates. Maximal degree in co-relation 2458. Up to 206 conditions per place. [2024-06-04 15:22:06,513 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 52 selfloop transitions, 43 changer transitions 0/97 dead transitions. [2024-06-04 15:22:06,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 97 transitions, 1185 flow [2024-06-04 15:22:06,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:06,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:06,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-04 15:22:06,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-04 15:22:06,515 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 787 flow. Second operand 8 states and 97 transitions. [2024-06-04 15:22:06,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 97 transitions, 1185 flow [2024-06-04 15:22:06,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 97 transitions, 1114 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-04 15:22:06,527 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 860 flow [2024-06-04 15:22:06,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=860, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2024-06-04 15:22:06,528 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-06-04 15:22:06,528 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 860 flow [2024-06-04 15:22:06,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:06,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:06,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:06,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:22:06,529 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:06,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:06,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1899626350, now seen corresponding path program 3 times [2024-06-04 15:22:06,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:06,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531535229] [2024-06-04 15:22:06,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:06,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:07,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:07,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531535229] [2024-06-04 15:22:07,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531535229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:07,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:07,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:22:07,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155435198] [2024-06-04 15:22:07,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:07,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:22:07,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:07,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:22:07,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:22:07,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:07,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 860 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:07,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:07,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:07,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:07,556 INFO L124 PetriNetUnfolderBase]: 230/411 cut-off events. [2024-06-04 15:22:07,556 INFO L125 PetriNetUnfolderBase]: For 7193/7193 co-relation queries the response was YES. [2024-06-04 15:22:07,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 411 events. 230/411 cut-off events. For 7193/7193 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1524 event pairs, 42 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 2531. Up to 385 conditions per place. [2024-06-04 15:22:07,559 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 76 selfloop transitions, 14 changer transitions 0/92 dead transitions. [2024-06-04 15:22:07,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 92 transitions, 1069 flow [2024-06-04 15:22:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-04 15:22:07,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31851851851851853 [2024-06-04 15:22:07,561 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 860 flow. Second operand 9 states and 86 transitions. [2024-06-04 15:22:07,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 92 transitions, 1069 flow [2024-06-04 15:22:07,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 92 transitions, 999 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 15:22:07,575 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 835 flow [2024-06-04 15:22:07,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=835, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2024-06-04 15:22:07,575 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-06-04 15:22:07,576 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 835 flow [2024-06-04 15:22:07,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:07,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:07,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:07,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:22:07,576 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:07,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:07,577 INFO L85 PathProgramCache]: Analyzing trace with hash 570017267, now seen corresponding path program 6 times [2024-06-04 15:22:07,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:07,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148420873] [2024-06-04 15:22:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:07,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:08,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:08,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148420873] [2024-06-04 15:22:08,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148420873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:08,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:08,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:22:08,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938652640] [2024-06-04 15:22:08,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:08,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:22:08,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:08,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:22:08,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:22:08,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:08,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 835 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:08,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:08,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:08,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:08,419 INFO L124 PetriNetUnfolderBase]: 222/399 cut-off events. [2024-06-04 15:22:08,420 INFO L125 PetriNetUnfolderBase]: For 7252/7252 co-relation queries the response was YES. [2024-06-04 15:22:08,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 399 events. 222/399 cut-off events. For 7252/7252 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1488 event pairs, 35 based on Foata normal form. 4/402 useless extension candidates. Maximal degree in co-relation 2321. Up to 350 conditions per place. [2024-06-04 15:22:08,440 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 74 selfloop transitions, 18 changer transitions 0/94 dead transitions. [2024-06-04 15:22:08,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 94 transitions, 1095 flow [2024-06-04 15:22:08,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:08,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:08,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-04 15:22:08,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:22:08,443 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 835 flow. Second operand 8 states and 85 transitions. [2024-06-04 15:22:08,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 94 transitions, 1095 flow [2024-06-04 15:22:08,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 94 transitions, 1033 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 15:22:08,463 INFO L231 Difference]: Finished difference. Result has 106 places, 83 transitions, 817 flow [2024-06-04 15:22:08,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=817, PETRI_PLACES=106, PETRI_TRANSITIONS=83} [2024-06-04 15:22:08,464 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-04 15:22:08,464 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 83 transitions, 817 flow [2024-06-04 15:22:08,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:08,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:08,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:08,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:22:08,466 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:08,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:08,466 INFO L85 PathProgramCache]: Analyzing trace with hash -20331410, now seen corresponding path program 1 times [2024-06-04 15:22:08,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:08,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832440536] [2024-06-04 15:22:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:08,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:09,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:09,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832440536] [2024-06-04 15:22:09,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832440536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:09,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:09,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:09,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142303990] [2024-06-04 15:22:09,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:09,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:09,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:09,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:09,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:09,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:09,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 83 transitions, 817 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:09,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:09,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:09,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:09,424 INFO L124 PetriNetUnfolderBase]: 226/407 cut-off events. [2024-06-04 15:22:09,424 INFO L125 PetriNetUnfolderBase]: For 7307/7307 co-relation queries the response was YES. [2024-06-04 15:22:09,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2413 conditions, 407 events. 226/407 cut-off events. For 7307/7307 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1529 event pairs, 22 based on Foata normal form. 2/408 useless extension candidates. Maximal degree in co-relation 2359. Up to 345 conditions per place. [2024-06-04 15:22:09,427 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 87 selfloop transitions, 11 changer transitions 0/100 dead transitions. [2024-06-04 15:22:09,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 100 transitions, 1063 flow [2024-06-04 15:22:09,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-04 15:22:09,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 15:22:09,428 INFO L175 Difference]: Start difference. First operand has 106 places, 83 transitions, 817 flow. Second operand 8 states and 84 transitions. [2024-06-04 15:22:09,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 100 transitions, 1063 flow [2024-06-04 15:22:09,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 100 transitions, 994 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 15:22:09,445 INFO L231 Difference]: Finished difference. Result has 106 places, 84 transitions, 788 flow [2024-06-04 15:22:09,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=788, PETRI_PLACES=106, PETRI_TRANSITIONS=84} [2024-06-04 15:22:09,445 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-04 15:22:09,445 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 84 transitions, 788 flow [2024-06-04 15:22:09,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:09,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:09,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:09,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:22:09,446 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:09,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:09,446 INFO L85 PathProgramCache]: Analyzing trace with hash 200506150, now seen corresponding path program 2 times [2024-06-04 15:22:09,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:09,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034592210] [2024-06-04 15:22:09,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:09,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:10,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:10,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034592210] [2024-06-04 15:22:10,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034592210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:10,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:10,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:10,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586956715] [2024-06-04 15:22:10,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:10,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:10,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:10,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:10,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:10,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:10,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 84 transitions, 788 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:10,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:10,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:10,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:10,603 INFO L124 PetriNetUnfolderBase]: 230/415 cut-off events. [2024-06-04 15:22:10,604 INFO L125 PetriNetUnfolderBase]: For 7749/7749 co-relation queries the response was YES. [2024-06-04 15:22:10,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2444 conditions, 415 events. 230/415 cut-off events. For 7749/7749 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1582 event pairs, 34 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 2389. Up to 362 conditions per place. [2024-06-04 15:22:10,607 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 85 selfloop transitions, 14 changer transitions 0/101 dead transitions. [2024-06-04 15:22:10,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 101 transitions, 1040 flow [2024-06-04 15:22:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:10,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:10,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-04 15:22:10,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-04 15:22:10,609 INFO L175 Difference]: Start difference. First operand has 106 places, 84 transitions, 788 flow. Second operand 8 states and 86 transitions. [2024-06-04 15:22:10,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 101 transitions, 1040 flow [2024-06-04 15:22:10,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 101 transitions, 1010 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 15:22:10,630 INFO L231 Difference]: Finished difference. Result has 108 places, 85 transitions, 807 flow [2024-06-04 15:22:10,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=807, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2024-06-04 15:22:10,631 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 79 predicate places. [2024-06-04 15:22:10,631 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 807 flow [2024-06-04 15:22:10,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:10,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:10,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:10,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:22:10,632 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:10,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:10,632 INFO L85 PathProgramCache]: Analyzing trace with hash -17589646, now seen corresponding path program 1 times [2024-06-04 15:22:10,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:10,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471255320] [2024-06-04 15:22:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:10,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:11,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:11,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471255320] [2024-06-04 15:22:11,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471255320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:11,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:11,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:11,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783341051] [2024-06-04 15:22:11,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:11,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:11,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:11,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:11,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:11,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:11,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 807 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:11,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:11,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:11,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:11,572 INFO L124 PetriNetUnfolderBase]: 227/410 cut-off events. [2024-06-04 15:22:11,572 INFO L125 PetriNetUnfolderBase]: For 7739/7739 co-relation queries the response was YES. [2024-06-04 15:22:11,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 410 events. 227/410 cut-off events. For 7739/7739 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1552 event pairs, 33 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 2348. Up to 354 conditions per place. [2024-06-04 15:22:11,576 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 82 selfloop transitions, 17 changer transitions 0/101 dead transitions. [2024-06-04 15:22:11,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 101 transitions, 1047 flow [2024-06-04 15:22:11,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-04 15:22:11,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 15:22:11,577 INFO L175 Difference]: Start difference. First operand has 108 places, 85 transitions, 807 flow. Second operand 8 states and 87 transitions. [2024-06-04 15:22:11,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 101 transitions, 1047 flow [2024-06-04 15:22:11,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 101 transitions, 1002 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 15:22:11,593 INFO L231 Difference]: Finished difference. Result has 110 places, 85 transitions, 804 flow [2024-06-04 15:22:11,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=804, PETRI_PLACES=110, PETRI_TRANSITIONS=85} [2024-06-04 15:22:11,594 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-04 15:22:11,594 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 85 transitions, 804 flow [2024-06-04 15:22:11,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:11,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:11,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:11,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:22:11,594 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:11,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:11,595 INFO L85 PathProgramCache]: Analyzing trace with hash 318778528, now seen corresponding path program 1 times [2024-06-04 15:22:11,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:11,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024963921] [2024-06-04 15:22:11,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:11,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:12,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:12,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024963921] [2024-06-04 15:22:12,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024963921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:12,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:12,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:12,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297141665] [2024-06-04 15:22:12,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:12,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:12,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:12,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:12,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:12,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:12,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 85 transitions, 804 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:12,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:12,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:12,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:12,612 INFO L124 PetriNetUnfolderBase]: 231/418 cut-off events. [2024-06-04 15:22:12,613 INFO L125 PetriNetUnfolderBase]: For 8724/8724 co-relation queries the response was YES. [2024-06-04 15:22:12,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2459 conditions, 418 events. 231/418 cut-off events. For 8724/8724 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1601 event pairs, 37 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 2402. Up to 385 conditions per place. [2024-06-04 15:22:12,616 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 85 selfloop transitions, 13 changer transitions 0/100 dead transitions. [2024-06-04 15:22:12,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 100 transitions, 1056 flow [2024-06-04 15:22:12,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-04 15:22:12,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-04 15:22:12,618 INFO L175 Difference]: Start difference. First operand has 110 places, 85 transitions, 804 flow. Second operand 9 states and 89 transitions. [2024-06-04 15:22:12,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 100 transitions, 1056 flow [2024-06-04 15:22:12,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 100 transitions, 992 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:22:12,633 INFO L231 Difference]: Finished difference. Result has 112 places, 87 transitions, 803 flow [2024-06-04 15:22:12,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=803, PETRI_PLACES=112, PETRI_TRANSITIONS=87} [2024-06-04 15:22:12,636 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-04 15:22:12,636 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 87 transitions, 803 flow [2024-06-04 15:22:12,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:12,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:12,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:12,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 15:22:12,637 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:12,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:12,637 INFO L85 PathProgramCache]: Analyzing trace with hash 97816720, now seen corresponding path program 3 times [2024-06-04 15:22:12,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:12,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970818019] [2024-06-04 15:22:12,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:12,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:13,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:13,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970818019] [2024-06-04 15:22:13,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970818019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:13,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:13,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:13,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576675952] [2024-06-04 15:22:13,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:13,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:13,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:13,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:13,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:13,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:13,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 87 transitions, 803 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:13,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:13,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:13,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:13,630 INFO L124 PetriNetUnfolderBase]: 235/426 cut-off events. [2024-06-04 15:22:13,631 INFO L125 PetriNetUnfolderBase]: For 9284/9284 co-relation queries the response was YES. [2024-06-04 15:22:13,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 426 events. 235/426 cut-off events. For 9284/9284 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1652 event pairs, 33 based on Foata normal form. 2/427 useless extension candidates. Maximal degree in co-relation 2437. Up to 366 conditions per place. [2024-06-04 15:22:13,636 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 83 selfloop transitions, 17 changer transitions 0/102 dead transitions. [2024-06-04 15:22:13,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 102 transitions, 1055 flow [2024-06-04 15:22:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-04 15:22:13,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-04 15:22:13,641 INFO L175 Difference]: Start difference. First operand has 112 places, 87 transitions, 803 flow. Second operand 8 states and 86 transitions. [2024-06-04 15:22:13,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 102 transitions, 1055 flow [2024-06-04 15:22:13,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 102 transitions, 1018 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:22:13,672 INFO L231 Difference]: Finished difference. Result has 114 places, 88 transitions, 822 flow [2024-06-04 15:22:13,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=822, PETRI_PLACES=114, PETRI_TRANSITIONS=88} [2024-06-04 15:22:13,672 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2024-06-04 15:22:13,673 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 88 transitions, 822 flow [2024-06-04 15:22:13,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:13,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:13,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:13,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 15:22:13,673 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:13,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:13,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1240827672, now seen corresponding path program 2 times [2024-06-04 15:22:13,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:13,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280629694] [2024-06-04 15:22:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:13,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:14,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:14,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280629694] [2024-06-04 15:22:14,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280629694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:14,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:14,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:14,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022659865] [2024-06-04 15:22:14,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:14,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:14,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:14,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:14,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:14,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:14,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 88 transitions, 822 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:14,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:14,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:14,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:14,780 INFO L124 PetriNetUnfolderBase]: 275/506 cut-off events. [2024-06-04 15:22:14,781 INFO L125 PetriNetUnfolderBase]: For 15336/15336 co-relation queries the response was YES. [2024-06-04 15:22:14,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3173 conditions, 506 events. 275/506 cut-off events. For 15336/15336 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2070 event pairs, 46 based on Foata normal form. 2/507 useless extension candidates. Maximal degree in co-relation 3113. Up to 372 conditions per place. [2024-06-04 15:22:14,790 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 89 selfloop transitions, 19 changer transitions 0/110 dead transitions. [2024-06-04 15:22:14,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 110 transitions, 1262 flow [2024-06-04 15:22:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:22:14,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:22:14,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-04 15:22:14,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 15:22:14,792 INFO L175 Difference]: Start difference. First operand has 114 places, 88 transitions, 822 flow. Second operand 10 states and 105 transitions. [2024-06-04 15:22:14,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 110 transitions, 1262 flow [2024-06-04 15:22:14,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 110 transitions, 1216 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:22:14,821 INFO L231 Difference]: Finished difference. Result has 118 places, 90 transitions, 860 flow [2024-06-04 15:22:14,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=860, PETRI_PLACES=118, PETRI_TRANSITIONS=90} [2024-06-04 15:22:14,822 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-06-04 15:22:14,822 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 90 transitions, 860 flow [2024-06-04 15:22:14,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:14,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:14,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:14,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 15:22:14,822 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:14,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:14,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1241124342, now seen corresponding path program 3 times [2024-06-04 15:22:14,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:14,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143609347] [2024-06-04 15:22:14,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:14,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:15,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:15,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143609347] [2024-06-04 15:22:15,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143609347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:15,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:15,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:15,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189181927] [2024-06-04 15:22:15,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:15,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:15,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:15,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:15,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:15,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:15,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 90 transitions, 860 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:15,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:15,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:15,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:15,832 INFO L124 PetriNetUnfolderBase]: 282/519 cut-off events. [2024-06-04 15:22:15,832 INFO L125 PetriNetUnfolderBase]: For 16572/16572 co-relation queries the response was YES. [2024-06-04 15:22:15,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3280 conditions, 519 events. 282/519 cut-off events. For 16572/16572 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2180 event pairs, 44 based on Foata normal form. 2/520 useless extension candidates. Maximal degree in co-relation 3219. Up to 469 conditions per place. [2024-06-04 15:22:15,837 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 85 selfloop transitions, 20 changer transitions 0/107 dead transitions. [2024-06-04 15:22:15,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 107 transitions, 1207 flow [2024-06-04 15:22:15,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:22:15,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:22:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-04 15:22:15,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 15:22:15,838 INFO L175 Difference]: Start difference. First operand has 118 places, 90 transitions, 860 flow. Second operand 10 states and 100 transitions. [2024-06-04 15:22:15,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 107 transitions, 1207 flow [2024-06-04 15:22:15,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 107 transitions, 1152 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-04 15:22:15,869 INFO L231 Difference]: Finished difference. Result has 123 places, 93 transitions, 892 flow [2024-06-04 15:22:15,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=892, PETRI_PLACES=123, PETRI_TRANSITIONS=93} [2024-06-04 15:22:15,870 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2024-06-04 15:22:15,870 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 93 transitions, 892 flow [2024-06-04 15:22:15,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:15,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:15,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:15,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 15:22:15,870 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:15,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:15,871 INFO L85 PathProgramCache]: Analyzing trace with hash -729662234, now seen corresponding path program 1 times [2024-06-04 15:22:15,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:15,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525644397] [2024-06-04 15:22:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:16,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:16,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525644397] [2024-06-04 15:22:16,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525644397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:16,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:16,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:16,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889584519] [2024-06-04 15:22:16,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:16,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:16,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:16,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:16,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:16,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:16,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 93 transitions, 892 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:16,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:16,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:16,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:16,927 INFO L124 PetriNetUnfolderBase]: 278/513 cut-off events. [2024-06-04 15:22:16,928 INFO L125 PetriNetUnfolderBase]: For 16123/16123 co-relation queries the response was YES. [2024-06-04 15:22:16,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3186 conditions, 513 events. 278/513 cut-off events. For 16123/16123 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2129 event pairs, 52 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 3123. Up to 481 conditions per place. [2024-06-04 15:22:16,932 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 88 selfloop transitions, 14 changer transitions 0/104 dead transitions. [2024-06-04 15:22:16,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 104 transitions, 1124 flow [2024-06-04 15:22:16,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:16,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-04 15:22:16,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-06-04 15:22:16,934 INFO L175 Difference]: Start difference. First operand has 123 places, 93 transitions, 892 flow. Second operand 9 states and 88 transitions. [2024-06-04 15:22:16,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 104 transitions, 1124 flow [2024-06-04 15:22:16,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 104 transitions, 1068 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 15:22:16,957 INFO L231 Difference]: Finished difference. Result has 125 places, 93 transitions, 869 flow [2024-06-04 15:22:16,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=869, PETRI_PLACES=125, PETRI_TRANSITIONS=93} [2024-06-04 15:22:16,959 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-04 15:22:16,959 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 93 transitions, 869 flow [2024-06-04 15:22:16,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:16,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:16,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:16,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 15:22:16,960 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:16,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:16,960 INFO L85 PathProgramCache]: Analyzing trace with hash 484417662, now seen corresponding path program 4 times [2024-06-04 15:22:16,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:16,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738807122] [2024-06-04 15:22:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:16,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:17,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:17,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:17,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738807122] [2024-06-04 15:22:17,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738807122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:17,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:17,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:17,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666280169] [2024-06-04 15:22:17,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:17,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:17,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:17,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:17,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:17,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:17,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 93 transitions, 869 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:17,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:17,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:17,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:17,918 INFO L124 PetriNetUnfolderBase]: 275/509 cut-off events. [2024-06-04 15:22:17,918 INFO L125 PetriNetUnfolderBase]: For 15980/15984 co-relation queries the response was YES. [2024-06-04 15:22:17,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3084 conditions, 509 events. 275/509 cut-off events. For 15980/15984 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2121 event pairs, 59 based on Foata normal form. 6/514 useless extension candidates. Maximal degree in co-relation 3020. Up to 460 conditions per place. [2024-06-04 15:22:17,921 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 82 selfloop transitions, 20 changer transitions 0/104 dead transitions. [2024-06-04 15:22:17,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 104 transitions, 1103 flow [2024-06-04 15:22:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:17,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-04 15:22:17,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 15:22:17,922 INFO L175 Difference]: Start difference. First operand has 125 places, 93 transitions, 869 flow. Second operand 9 states and 90 transitions. [2024-06-04 15:22:17,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 104 transitions, 1103 flow [2024-06-04 15:22:17,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 104 transitions, 1065 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 15:22:17,950 INFO L231 Difference]: Finished difference. Result has 127 places, 94 transitions, 888 flow [2024-06-04 15:22:17,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=888, PETRI_PLACES=127, PETRI_TRANSITIONS=94} [2024-06-04 15:22:17,950 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-04 15:22:17,951 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 94 transitions, 888 flow [2024-06-04 15:22:17,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:17,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:17,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:17,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 15:22:17,951 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:17,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:17,952 INFO L85 PathProgramCache]: Analyzing trace with hash -957741324, now seen corresponding path program 4 times [2024-06-04 15:22:17,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:17,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105687983] [2024-06-04 15:22:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:17,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:18,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:18,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105687983] [2024-06-04 15:22:18,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105687983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:18,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:18,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:18,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277240086] [2024-06-04 15:22:18,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:18,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:18,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:18,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:18,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:18,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:18,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 94 transitions, 888 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:18,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:18,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:18,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:18,827 INFO L124 PetriNetUnfolderBase]: 272/504 cut-off events. [2024-06-04 15:22:18,827 INFO L125 PetriNetUnfolderBase]: For 15827/15831 co-relation queries the response was YES. [2024-06-04 15:22:18,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3032 conditions, 504 events. 272/504 cut-off events. For 15827/15831 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2096 event pairs, 60 based on Foata normal form. 3/506 useless extension candidates. Maximal degree in co-relation 2966. Up to 431 conditions per place. [2024-06-04 15:22:18,830 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 82 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2024-06-04 15:22:18,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 105 transitions, 1122 flow [2024-06-04 15:22:18,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-04 15:22:18,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:22:18,831 INFO L175 Difference]: Start difference. First operand has 127 places, 94 transitions, 888 flow. Second operand 8 states and 85 transitions. [2024-06-04 15:22:18,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 105 transitions, 1122 flow [2024-06-04 15:22:18,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 105 transitions, 1015 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-04 15:22:18,864 INFO L231 Difference]: Finished difference. Result has 125 places, 94 transitions, 827 flow [2024-06-04 15:22:18,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=827, PETRI_PLACES=125, PETRI_TRANSITIONS=94} [2024-06-04 15:22:18,864 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-04 15:22:18,864 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 94 transitions, 827 flow [2024-06-04 15:22:18,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:18,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:18,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:18,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 15:22:18,865 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:18,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:18,865 INFO L85 PathProgramCache]: Analyzing trace with hash -729655476, now seen corresponding path program 5 times [2024-06-04 15:22:18,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:18,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47414737] [2024-06-04 15:22:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:18,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:19,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:19,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47414737] [2024-06-04 15:22:19,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47414737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:19,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:19,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:19,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012915336] [2024-06-04 15:22:19,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:19,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:19,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:19,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:19,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:19,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:19,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 94 transitions, 827 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:19,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:19,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:19,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:19,902 INFO L124 PetriNetUnfolderBase]: 256/475 cut-off events. [2024-06-04 15:22:19,903 INFO L125 PetriNetUnfolderBase]: For 15173/15173 co-relation queries the response was YES. [2024-06-04 15:22:19,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 475 events. 256/475 cut-off events. For 15173/15173 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1936 event pairs, 36 based on Foata normal form. 12/486 useless extension candidates. Maximal degree in co-relation 2366. Up to 392 conditions per place. [2024-06-04 15:22:19,906 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 87 selfloop transitions, 13 changer transitions 8/110 dead transitions. [2024-06-04 15:22:19,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 110 transitions, 1099 flow [2024-06-04 15:22:19,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-04 15:22:19,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-04 15:22:19,907 INFO L175 Difference]: Start difference. First operand has 125 places, 94 transitions, 827 flow. Second operand 9 states and 94 transitions. [2024-06-04 15:22:19,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 110 transitions, 1099 flow [2024-06-04 15:22:19,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 110 transitions, 997 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 15:22:19,929 INFO L231 Difference]: Finished difference. Result has 125 places, 91 transitions, 731 flow [2024-06-04 15:22:19,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=731, PETRI_PLACES=125, PETRI_TRANSITIONS=91} [2024-06-04 15:22:19,930 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-04 15:22:19,930 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 91 transitions, 731 flow [2024-06-04 15:22:19,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:19,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:19,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:19,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 15:22:19,930 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:19,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:19,931 INFO L85 PathProgramCache]: Analyzing trace with hash -630272820, now seen corresponding path program 1 times [2024-06-04 15:22:19,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:19,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936695376] [2024-06-04 15:22:19,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:19,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:20,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:20,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936695376] [2024-06-04 15:22:20,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936695376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:20,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:20,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:22:20,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461865536] [2024-06-04 15:22:20,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:20,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:22:20,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:20,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:22:20,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:22:20,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:20,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 91 transitions, 731 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:20,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:20,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:20,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:20,817 INFO L124 PetriNetUnfolderBase]: 234/433 cut-off events. [2024-06-04 15:22:20,817 INFO L125 PetriNetUnfolderBase]: For 9372/9372 co-relation queries the response was YES. [2024-06-04 15:22:20,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2188 conditions, 433 events. 234/433 cut-off events. For 9372/9372 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1742 event pairs, 19 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 2126. Up to 363 conditions per place. [2024-06-04 15:22:20,820 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 96 selfloop transitions, 12 changer transitions 0/110 dead transitions. [2024-06-04 15:22:20,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 110 transitions, 1007 flow [2024-06-04 15:22:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:20,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:20,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-04 15:22:20,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-06-04 15:22:20,821 INFO L175 Difference]: Start difference. First operand has 125 places, 91 transitions, 731 flow. Second operand 9 states and 92 transitions. [2024-06-04 15:22:20,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 110 transitions, 1007 flow [2024-06-04 15:22:20,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 110 transitions, 932 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 15:22:20,844 INFO L231 Difference]: Finished difference. Result has 121 places, 92 transitions, 704 flow [2024-06-04 15:22:20,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=704, PETRI_PLACES=121, PETRI_TRANSITIONS=92} [2024-06-04 15:22:20,845 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2024-06-04 15:22:20,845 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 92 transitions, 704 flow [2024-06-04 15:22:20,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:20,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:20,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:20,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 15:22:20,846 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:20,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:20,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1920724244, now seen corresponding path program 2 times [2024-06-04 15:22:20,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:20,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811293514] [2024-06-04 15:22:20,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:20,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:21,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:21,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811293514] [2024-06-04 15:22:21,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811293514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:21,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:21,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:22:21,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902458215] [2024-06-04 15:22:21,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:21,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:22:21,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:21,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:22:21,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:22:21,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:21,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 92 transitions, 704 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:21,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:21,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:21,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:21,945 INFO L124 PetriNetUnfolderBase]: 245/454 cut-off events. [2024-06-04 15:22:21,945 INFO L125 PetriNetUnfolderBase]: For 10807/10807 co-relation queries the response was YES. [2024-06-04 15:22:21,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 454 events. 245/454 cut-off events. For 10807/10807 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1877 event pairs, 31 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2288. Up to 371 conditions per place. [2024-06-04 15:22:21,948 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 93 selfloop transitions, 18 changer transitions 0/113 dead transitions. [2024-06-04 15:22:21,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 113 transitions, 1084 flow [2024-06-04 15:22:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:21,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 15:22:21,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-04 15:22:21,951 INFO L175 Difference]: Start difference. First operand has 121 places, 92 transitions, 704 flow. Second operand 9 states and 97 transitions. [2024-06-04 15:22:21,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 113 transitions, 1084 flow [2024-06-04 15:22:21,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 113 transitions, 1046 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 15:22:21,969 INFO L231 Difference]: Finished difference. Result has 123 places, 94 transitions, 748 flow [2024-06-04 15:22:21,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=748, PETRI_PLACES=123, PETRI_TRANSITIONS=94} [2024-06-04 15:22:21,969 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2024-06-04 15:22:21,969 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 94 transitions, 748 flow [2024-06-04 15:22:21,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:21,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:21,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:21,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 15:22:21,970 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:21,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:21,970 INFO L85 PathProgramCache]: Analyzing trace with hash -545278260, now seen corresponding path program 3 times [2024-06-04 15:22:21,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:21,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003184243] [2024-06-04 15:22:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:21,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:22,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:22,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003184243] [2024-06-04 15:22:22,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003184243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:22,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:22,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:22:22,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044831198] [2024-06-04 15:22:22,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:22,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:22:22,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:22,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:22:22,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:22:22,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:22,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 94 transitions, 748 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:22,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:22,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:22,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:22,987 INFO L124 PetriNetUnfolderBase]: 242/449 cut-off events. [2024-06-04 15:22:22,988 INFO L125 PetriNetUnfolderBase]: For 10344/10344 co-relation queries the response was YES. [2024-06-04 15:22:22,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 449 events. 242/449 cut-off events. For 10344/10344 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1855 event pairs, 30 based on Foata normal form. 2/450 useless extension candidates. Maximal degree in co-relation 2196. Up to 385 conditions per place. [2024-06-04 15:22:22,990 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 92 selfloop transitions, 18 changer transitions 0/112 dead transitions. [2024-06-04 15:22:22,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 112 transitions, 1014 flow [2024-06-04 15:22:22,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:22,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:22,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-04 15:22:22,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-04 15:22:22,991 INFO L175 Difference]: Start difference. First operand has 123 places, 94 transitions, 748 flow. Second operand 9 states and 95 transitions. [2024-06-04 15:22:22,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 112 transitions, 1014 flow [2024-06-04 15:22:23,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 112 transitions, 958 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-04 15:22:23,008 INFO L231 Difference]: Finished difference. Result has 127 places, 94 transitions, 733 flow [2024-06-04 15:22:23,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=733, PETRI_PLACES=127, PETRI_TRANSITIONS=94} [2024-06-04 15:22:23,008 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-04 15:22:23,009 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 94 transitions, 733 flow [2024-06-04 15:22:23,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:23,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:23,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:23,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 15:22:23,009 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:23,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:23,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2007569876, now seen corresponding path program 1 times [2024-06-04 15:22:23,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:23,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733142775] [2024-06-04 15:22:23,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:23,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:23,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:23,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733142775] [2024-06-04 15:22:23,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733142775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:23,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:23,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:22:23,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123932132] [2024-06-04 15:22:23,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:23,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:22:23,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:23,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:22:23,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:22:23,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:23,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 94 transitions, 733 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:23,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:23,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:23,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:24,112 INFO L124 PetriNetUnfolderBase]: 268/503 cut-off events. [2024-06-04 15:22:24,112 INFO L125 PetriNetUnfolderBase]: For 16246/16246 co-relation queries the response was YES. [2024-06-04 15:22:24,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2407 conditions, 503 events. 268/503 cut-off events. For 16246/16246 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2190 event pairs, 34 based on Foata normal form. 10/512 useless extension candidates. Maximal degree in co-relation 2343. Up to 397 conditions per place. [2024-06-04 15:22:24,116 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 96 selfloop transitions, 14 changer transitions 9/121 dead transitions. [2024-06-04 15:22:24,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 121 transitions, 1066 flow [2024-06-04 15:22:24,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:22:24,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:22:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 15:22:24,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-04 15:22:24,132 INFO L175 Difference]: Start difference. First operand has 127 places, 94 transitions, 733 flow. Second operand 10 states and 108 transitions. [2024-06-04 15:22:24,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 121 transitions, 1066 flow [2024-06-04 15:22:24,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 121 transitions, 1025 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-04 15:22:24,169 INFO L231 Difference]: Finished difference. Result has 130 places, 94 transitions, 725 flow [2024-06-04 15:22:24,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=725, PETRI_PLACES=130, PETRI_TRANSITIONS=94} [2024-06-04 15:22:24,170 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-04 15:22:24,170 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 94 transitions, 725 flow [2024-06-04 15:22:24,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:24,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:24,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:24,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 15:22:24,171 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:24,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:24,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1292193040, now seen corresponding path program 2 times [2024-06-04 15:22:24,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:24,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294188194] [2024-06-04 15:22:24,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:24,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:24,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:24,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294188194] [2024-06-04 15:22:24,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294188194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:24,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:24,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:24,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182579361] [2024-06-04 15:22:24,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:24,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:24,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:24,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:24,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:24,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:24,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 94 transitions, 725 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:24,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:24,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:24,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:24,965 INFO L124 PetriNetUnfolderBase]: 262/497 cut-off events. [2024-06-04 15:22:24,965 INFO L125 PetriNetUnfolderBase]: For 18720/18720 co-relation queries the response was YES. [2024-06-04 15:22:24,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 497 events. 262/497 cut-off events. For 18720/18720 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2153 event pairs, 34 based on Foata normal form. 12/508 useless extension candidates. Maximal degree in co-relation 2340. Up to 344 conditions per place. [2024-06-04 15:22:24,968 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 81 selfloop transitions, 25 changer transitions 7/115 dead transitions. [2024-06-04 15:22:24,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 115 transitions, 1039 flow [2024-06-04 15:22:24,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:24,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:24,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 15:22:24,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-04 15:22:24,970 INFO L175 Difference]: Start difference. First operand has 130 places, 94 transitions, 725 flow. Second operand 9 states and 102 transitions. [2024-06-04 15:22:24,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 115 transitions, 1039 flow [2024-06-04 15:22:24,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 115 transitions, 1007 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 15:22:24,997 INFO L231 Difference]: Finished difference. Result has 130 places, 92 transitions, 749 flow [2024-06-04 15:22:24,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=749, PETRI_PLACES=130, PETRI_TRANSITIONS=92} [2024-06-04 15:22:24,999 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-04 15:22:24,999 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 92 transitions, 749 flow [2024-06-04 15:22:24,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:24,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:24,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:24,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 15:22:24,999 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:25,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:25,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1256922634, now seen corresponding path program 3 times [2024-06-04 15:22:25,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:25,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772147715] [2024-06-04 15:22:25,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:25,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:25,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:25,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772147715] [2024-06-04 15:22:25,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772147715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:25,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:25,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:25,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986004430] [2024-06-04 15:22:25,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:25,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:25,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:25,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:25,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:25,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:25,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 92 transitions, 749 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:25,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:25,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:25,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:25,922 INFO L124 PetriNetUnfolderBase]: 286/549 cut-off events. [2024-06-04 15:22:25,922 INFO L125 PetriNetUnfolderBase]: For 24980/24980 co-relation queries the response was YES. [2024-06-04 15:22:25,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3084 conditions, 549 events. 286/549 cut-off events. For 24980/24980 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2454 event pairs, 50 based on Foata normal form. 8/556 useless extension candidates. Maximal degree in co-relation 3018. Up to 302 conditions per place. [2024-06-04 15:22:25,926 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 86 selfloop transitions, 21 changer transitions 8/117 dead transitions. [2024-06-04 15:22:25,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 117 transitions, 1165 flow [2024-06-04 15:22:25,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:25,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 15:22:25,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-06-04 15:22:25,927 INFO L175 Difference]: Start difference. First operand has 130 places, 92 transitions, 749 flow. Second operand 9 states and 104 transitions. [2024-06-04 15:22:25,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 117 transitions, 1165 flow [2024-06-04 15:22:25,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 117 transitions, 1059 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-04 15:22:25,969 INFO L231 Difference]: Finished difference. Result has 129 places, 89 transitions, 670 flow [2024-06-04 15:22:25,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=670, PETRI_PLACES=129, PETRI_TRANSITIONS=89} [2024-06-04 15:22:25,969 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 100 predicate places. [2024-06-04 15:22:25,969 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 89 transitions, 670 flow [2024-06-04 15:22:25,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:25,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:25,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:25,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 15:22:25,970 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:25,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:25,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1291991230, now seen corresponding path program 4 times [2024-06-04 15:22:25,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:25,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872680416] [2024-06-04 15:22:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:25,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:26,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:26,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872680416] [2024-06-04 15:22:26,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872680416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:26,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:26,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:22:26,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039296503] [2024-06-04 15:22:26,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:26,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:22:26,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:26,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:22:26,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:22:26,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:26,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 89 transitions, 670 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:26,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:26,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:26,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:27,048 INFO L124 PetriNetUnfolderBase]: 269/518 cut-off events. [2024-06-04 15:22:27,048 INFO L125 PetriNetUnfolderBase]: For 24370/24370 co-relation queries the response was YES. [2024-06-04 15:22:27,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2719 conditions, 518 events. 269/518 cut-off events. For 24370/24370 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2292 event pairs, 54 based on Foata normal form. 10/527 useless extension candidates. Maximal degree in co-relation 2654. Up to 380 conditions per place. [2024-06-04 15:22:27,051 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 76 selfloop transitions, 20 changer transitions 13/111 dead transitions. [2024-06-04 15:22:27,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 111 transitions, 960 flow [2024-06-04 15:22:27,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:22:27,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:22:27,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 15:22:27,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-04 15:22:27,069 INFO L175 Difference]: Start difference. First operand has 129 places, 89 transitions, 670 flow. Second operand 10 states and 108 transitions. [2024-06-04 15:22:27,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 111 transitions, 960 flow [2024-06-04 15:22:27,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 111 transitions, 918 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:22:27,107 INFO L231 Difference]: Finished difference. Result has 127 places, 84 transitions, 634 flow [2024-06-04 15:22:27,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=634, PETRI_PLACES=127, PETRI_TRANSITIONS=84} [2024-06-04 15:22:27,108 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-04 15:22:27,108 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 84 transitions, 634 flow [2024-06-04 15:22:27,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:27,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:27,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:27,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 15:22:27,109 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:27,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:27,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1286478748, now seen corresponding path program 4 times [2024-06-04 15:22:27,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:27,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130720761] [2024-06-04 15:22:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:27,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:27,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130720761] [2024-06-04 15:22:27,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130720761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:27,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:27,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:27,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010568499] [2024-06-04 15:22:27,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:27,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:27,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:27,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:27,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:27,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:27,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 84 transitions, 634 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:27,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:27,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:27,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:27,950 INFO L124 PetriNetUnfolderBase]: 234/457 cut-off events. [2024-06-04 15:22:27,951 INFO L125 PetriNetUnfolderBase]: For 15739/15739 co-relation queries the response was YES. [2024-06-04 15:22:27,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2399 conditions, 457 events. 234/457 cut-off events. For 15739/15739 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1964 event pairs, 51 based on Foata normal form. 2/458 useless extension candidates. Maximal degree in co-relation 2336. Up to 369 conditions per place. [2024-06-04 15:22:27,953 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 80 selfloop transitions, 19 changer transitions 0/101 dead transitions. [2024-06-04 15:22:27,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 101 transitions, 894 flow [2024-06-04 15:22:27,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-04 15:22:27,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-04 15:22:27,954 INFO L175 Difference]: Start difference. First operand has 127 places, 84 transitions, 634 flow. Second operand 9 states and 94 transitions. [2024-06-04 15:22:27,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 101 transitions, 894 flow [2024-06-04 15:22:27,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 101 transitions, 850 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 15:22:27,982 INFO L231 Difference]: Finished difference. Result has 124 places, 85 transitions, 654 flow [2024-06-04 15:22:27,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=654, PETRI_PLACES=124, PETRI_TRANSITIONS=85} [2024-06-04 15:22:27,983 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2024-06-04 15:22:27,983 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 85 transitions, 654 flow [2024-06-04 15:22:27,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:27,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:27,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:27,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 15:22:27,985 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:27,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:27,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1286475028, now seen corresponding path program 5 times [2024-06-04 15:22:27,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:27,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637951895] [2024-06-04 15:22:27,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:27,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:28,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:28,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637951895] [2024-06-04 15:22:28,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637951895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:28,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:28,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:22:28,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924205001] [2024-06-04 15:22:28,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:28,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:22:28,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:28,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:22:28,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:22:28,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:28,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 85 transitions, 654 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:28,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:28,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:28,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:29,093 INFO L124 PetriNetUnfolderBase]: 238/465 cut-off events. [2024-06-04 15:22:29,093 INFO L125 PetriNetUnfolderBase]: For 15210/15210 co-relation queries the response was YES. [2024-06-04 15:22:29,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2444 conditions, 465 events. 238/465 cut-off events. For 15210/15210 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2002 event pairs, 51 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 2382. Up to 357 conditions per place. [2024-06-04 15:22:29,096 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 79 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-04 15:22:29,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 102 transitions, 916 flow [2024-06-04 15:22:29,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-04 15:22:29,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-04 15:22:29,107 INFO L175 Difference]: Start difference. First operand has 124 places, 85 transitions, 654 flow. Second operand 9 states and 95 transitions. [2024-06-04 15:22:29,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 102 transitions, 916 flow [2024-06-04 15:22:29,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 102 transitions, 862 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 15:22:29,142 INFO L231 Difference]: Finished difference. Result has 126 places, 86 transitions, 670 flow [2024-06-04 15:22:29,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=670, PETRI_PLACES=126, PETRI_TRANSITIONS=86} [2024-06-04 15:22:29,142 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 97 predicate places. [2024-06-04 15:22:29,142 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 86 transitions, 670 flow [2024-06-04 15:22:29,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:29,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:29,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:29,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 15:22:29,143 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:29,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:29,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1643185322, now seen corresponding path program 5 times [2024-06-04 15:22:29,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:29,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387174879] [2024-06-04 15:22:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:29,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:29,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387174879] [2024-06-04 15:22:29,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387174879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:29,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:29,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:29,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712976695] [2024-06-04 15:22:29,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:29,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:29,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:29,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:29,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:29,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:29,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 86 transitions, 670 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:29,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:29,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:29,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:29,945 INFO L124 PetriNetUnfolderBase]: 258/510 cut-off events. [2024-06-04 15:22:29,946 INFO L125 PetriNetUnfolderBase]: For 23637/23641 co-relation queries the response was YES. [2024-06-04 15:22:29,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 510 events. 258/510 cut-off events. For 23637/23641 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2297 event pairs, 65 based on Foata normal form. 13/522 useless extension candidates. Maximal degree in co-relation 2549. Up to 300 conditions per place. [2024-06-04 15:22:29,949 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 62 selfloop transitions, 34 changer transitions 7/105 dead transitions. [2024-06-04 15:22:29,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 105 transitions, 962 flow [2024-06-04 15:22:29,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:29,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:29,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 15:22:29,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-04 15:22:29,957 INFO L175 Difference]: Start difference. First operand has 126 places, 86 transitions, 670 flow. Second operand 9 states and 107 transitions. [2024-06-04 15:22:29,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 105 transitions, 962 flow [2024-06-04 15:22:29,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 105 transitions, 902 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 15:22:29,988 INFO L231 Difference]: Finished difference. Result has 128 places, 84 transitions, 688 flow [2024-06-04 15:22:29,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=688, PETRI_PLACES=128, PETRI_TRANSITIONS=84} [2024-06-04 15:22:29,988 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-04 15:22:29,989 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 84 transitions, 688 flow [2024-06-04 15:22:29,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:29,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:29,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:29,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 15:22:29,989 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:29,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:29,990 INFO L85 PathProgramCache]: Analyzing trace with hash 380516370, now seen corresponding path program 6 times [2024-06-04 15:22:29,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:29,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200122655] [2024-06-04 15:22:29,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:29,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:30,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:30,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200122655] [2024-06-04 15:22:30,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200122655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:30,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:30,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:30,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034729455] [2024-06-04 15:22:30,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:30,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:30,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:30,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:30,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 84 transitions, 688 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:30,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:30,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:30,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:31,018 INFO L124 PetriNetUnfolderBase]: 282/562 cut-off events. [2024-06-04 15:22:31,018 INFO L125 PetriNetUnfolderBase]: For 31157/31161 co-relation queries the response was YES. [2024-06-04 15:22:31,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3302 conditions, 562 events. 282/562 cut-off events. For 31157/31161 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2603 event pairs, 73 based on Foata normal form. 9/570 useless extension candidates. Maximal degree in co-relation 3238. Up to 278 conditions per place. [2024-06-04 15:22:31,023 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 67 selfloop transitions, 30 changer transitions 8/107 dead transitions. [2024-06-04 15:22:31,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 107 transitions, 1084 flow [2024-06-04 15:22:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:31,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 15:22:31,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-04 15:22:31,025 INFO L175 Difference]: Start difference. First operand has 128 places, 84 transitions, 688 flow. Second operand 9 states and 109 transitions. [2024-06-04 15:22:31,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 107 transitions, 1084 flow [2024-06-04 15:22:31,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 107 transitions, 982 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-04 15:22:31,072 INFO L231 Difference]: Finished difference. Result has 128 places, 81 transitions, 627 flow [2024-06-04 15:22:31,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=627, PETRI_PLACES=128, PETRI_TRANSITIONS=81} [2024-06-04 15:22:31,072 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-04 15:22:31,072 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 81 transitions, 627 flow [2024-06-04 15:22:31,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:31,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:31,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:31,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 15:22:31,077 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:31,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:31,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1648899614, now seen corresponding path program 6 times [2024-06-04 15:22:31,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:31,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85891240] [2024-06-04 15:22:31,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:31,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:31,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:31,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85891240] [2024-06-04 15:22:31,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85891240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:31,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:31,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:22:31,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405713782] [2024-06-04 15:22:31,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:31,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:22:31,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:22:31,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:22:31,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:31,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 81 transitions, 627 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:31,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:31,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:31,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:32,159 INFO L124 PetriNetUnfolderBase]: 260/516 cut-off events. [2024-06-04 15:22:32,160 INFO L125 PetriNetUnfolderBase]: For 25891/25895 co-relation queries the response was YES. [2024-06-04 15:22:32,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3016 conditions, 516 events. 260/516 cut-off events. For 25891/25895 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2329 event pairs, 76 based on Foata normal form. 3/518 useless extension candidates. Maximal degree in co-relation 2952. Up to 386 conditions per place. [2024-06-04 15:22:32,163 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 64 selfloop transitions, 29 changer transitions 0/95 dead transitions. [2024-06-04 15:22:32,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 95 transitions, 873 flow [2024-06-04 15:22:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 15:22:32,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-04 15:22:32,181 INFO L175 Difference]: Start difference. First operand has 128 places, 81 transitions, 627 flow. Second operand 9 states and 97 transitions. [2024-06-04 15:22:32,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 95 transitions, 873 flow [2024-06-04 15:22:32,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 95 transitions, 811 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:22:32,219 INFO L231 Difference]: Finished difference. Result has 125 places, 82 transitions, 655 flow [2024-06-04 15:22:32,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=655, PETRI_PLACES=125, PETRI_TRANSITIONS=82} [2024-06-04 15:22:32,220 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-04 15:22:32,220 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 82 transitions, 655 flow [2024-06-04 15:22:32,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:32,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:32,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:32,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 15:22:32,220 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:32,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:32,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1643387132, now seen corresponding path program 7 times [2024-06-04 15:22:32,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:32,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094313760] [2024-06-04 15:22:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:32,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:32,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:32,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094313760] [2024-06-04 15:22:32,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094313760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:32,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:32,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:22:32,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943668771] [2024-06-04 15:22:32,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:32,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:22:32,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:32,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:22:32,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:22:33,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:33,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 82 transitions, 655 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:33,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:33,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:33,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:33,285 INFO L124 PetriNetUnfolderBase]: 282/562 cut-off events. [2024-06-04 15:22:33,286 INFO L125 PetriNetUnfolderBase]: For 30995/30999 co-relation queries the response was YES. [2024-06-04 15:22:33,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3152 conditions, 562 events. 282/562 cut-off events. For 30995/30999 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2638 event pairs, 74 based on Foata normal form. 11/572 useless extension candidates. Maximal degree in co-relation 3090. Up to 357 conditions per place. [2024-06-04 15:22:33,288 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 61 selfloop transitions, 32 changer transitions 9/104 dead transitions. [2024-06-04 15:22:33,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 104 transitions, 941 flow [2024-06-04 15:22:33,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:22:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:22:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 15:22:33,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-04 15:22:33,289 INFO L175 Difference]: Start difference. First operand has 125 places, 82 transitions, 655 flow. Second operand 10 states and 115 transitions. [2024-06-04 15:22:33,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 104 transitions, 941 flow [2024-06-04 15:22:33,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 104 transitions, 861 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 15:22:33,323 INFO L231 Difference]: Finished difference. Result has 128 places, 81 transitions, 637 flow [2024-06-04 15:22:33,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=637, PETRI_PLACES=128, PETRI_TRANSITIONS=81} [2024-06-04 15:22:33,324 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-04 15:22:33,324 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 81 transitions, 637 flow [2024-06-04 15:22:33,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:33,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:33,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:33,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 15:22:33,325 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:33,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:33,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1648749512, now seen corresponding path program 8 times [2024-06-04 15:22:33,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:33,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074557104] [2024-06-04 15:22:33,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:33,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:34,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:34,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074557104] [2024-06-04 15:22:34,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074557104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:34,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:34,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:22:34,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041403765] [2024-06-04 15:22:34,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:34,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:22:34,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:34,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:22:34,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:22:34,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:34,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 81 transitions, 637 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:34,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:34,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:34,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:34,516 INFO L124 PetriNetUnfolderBase]: 258/522 cut-off events. [2024-06-04 15:22:34,516 INFO L125 PetriNetUnfolderBase]: For 29033/29037 co-relation queries the response was YES. [2024-06-04 15:22:34,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2831 conditions, 522 events. 258/522 cut-off events. For 29033/29037 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2407 event pairs, 72 based on Foata normal form. 11/532 useless extension candidates. Maximal degree in co-relation 2768. Up to 325 conditions per place. [2024-06-04 15:22:34,520 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 56 selfloop transitions, 33 changer transitions 9/100 dead transitions. [2024-06-04 15:22:34,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 100 transitions, 897 flow [2024-06-04 15:22:34,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:22:34,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:22:34,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 15:22:34,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-04 15:22:34,521 INFO L175 Difference]: Start difference. First operand has 128 places, 81 transitions, 637 flow. Second operand 10 states and 112 transitions. [2024-06-04 15:22:34,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 100 transitions, 897 flow [2024-06-04 15:22:34,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 100 transitions, 829 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:22:34,554 INFO L231 Difference]: Finished difference. Result has 128 places, 78 transitions, 619 flow [2024-06-04 15:22:34,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=619, PETRI_PLACES=128, PETRI_TRANSITIONS=78} [2024-06-04 15:22:34,554 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-04 15:22:34,555 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 78 transitions, 619 flow [2024-06-04 15:22:34,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:34,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:34,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:34,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 15:22:34,555 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:34,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:34,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1648903334, now seen corresponding path program 7 times [2024-06-04 15:22:34,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:34,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619198472] [2024-06-04 15:22:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:34,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:35,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:35,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619198472] [2024-06-04 15:22:35,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619198472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:35,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:35,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:22:35,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762052620] [2024-06-04 15:22:35,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:35,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:22:35,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:35,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:22:35,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:22:35,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:35,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 78 transitions, 619 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:35,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:35,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:35,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:35,732 INFO L124 PetriNetUnfolderBase]: 236/480 cut-off events. [2024-06-04 15:22:35,732 INFO L125 PetriNetUnfolderBase]: For 22768/22772 co-relation queries the response was YES. [2024-06-04 15:22:35,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2733 conditions, 480 events. 236/480 cut-off events. For 22768/22772 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2144 event pairs, 74 based on Foata normal form. 3/482 useless extension candidates. Maximal degree in co-relation 2670. Up to 321 conditions per place. [2024-06-04 15:22:35,735 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 61 selfloop transitions, 30 changer transitions 0/93 dead transitions. [2024-06-04 15:22:35,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 93 transitions, 945 flow [2024-06-04 15:22:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:35,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 15:22:35,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-04 15:22:35,736 INFO L175 Difference]: Start difference. First operand has 128 places, 78 transitions, 619 flow. Second operand 9 states and 97 transitions. [2024-06-04 15:22:35,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 93 transitions, 945 flow [2024-06-04 15:22:35,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 93 transitions, 869 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:22:35,784 INFO L231 Difference]: Finished difference. Result has 125 places, 79 transitions, 639 flow [2024-06-04 15:22:35,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=639, PETRI_PLACES=125, PETRI_TRANSITIONS=79} [2024-06-04 15:22:35,785 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-04 15:22:35,785 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 79 transitions, 639 flow [2024-06-04 15:22:35,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:35,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:35,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:35,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 15:22:35,786 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:35,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:35,786 INFO L85 PathProgramCache]: Analyzing trace with hash 574240578, now seen corresponding path program 8 times [2024-06-04 15:22:35,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:35,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075002025] [2024-06-04 15:22:35,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:35,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:36,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075002025] [2024-06-04 15:22:36,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075002025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:36,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:36,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:22:36,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077500927] [2024-06-04 15:22:36,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:36,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:22:36,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:36,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:22:36,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:22:36,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:36,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 79 transitions, 639 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:36,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:36,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:36,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:36,798 INFO L124 PetriNetUnfolderBase]: 233/474 cut-off events. [2024-06-04 15:22:36,798 INFO L125 PetriNetUnfolderBase]: For 20117/20117 co-relation queries the response was YES. [2024-06-04 15:22:36,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 474 events. 233/474 cut-off events. For 20117/20117 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2112 event pairs, 65 based on Foata normal form. 2/475 useless extension candidates. Maximal degree in co-relation 2527. Up to 444 conditions per place. [2024-06-04 15:22:36,801 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 76 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2024-06-04 15:22:36,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 90 transitions, 841 flow [2024-06-04 15:22:36,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-04 15:22:36,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31851851851851853 [2024-06-04 15:22:36,802 INFO L175 Difference]: Start difference. First operand has 125 places, 79 transitions, 639 flow. Second operand 9 states and 86 transitions. [2024-06-04 15:22:36,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 90 transitions, 841 flow [2024-06-04 15:22:36,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 90 transitions, 721 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 15:22:36,840 INFO L231 Difference]: Finished difference. Result has 126 places, 79 transitions, 547 flow [2024-06-04 15:22:36,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=547, PETRI_PLACES=126, PETRI_TRANSITIONS=79} [2024-06-04 15:22:36,840 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 97 predicate places. [2024-06-04 15:22:36,841 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 79 transitions, 547 flow [2024-06-04 15:22:36,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:36,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:36,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:36,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 15:22:36,841 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:36,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:36,842 INFO L85 PathProgramCache]: Analyzing trace with hash 581598180, now seen corresponding path program 9 times [2024-06-04 15:22:36,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:36,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201822965] [2024-06-04 15:22:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:36,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:37,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:37,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201822965] [2024-06-04 15:22:37,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201822965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:37,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:37,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:37,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622125777] [2024-06-04 15:22:37,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:37,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:37,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:37,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:37,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:37,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:37,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 79 transitions, 547 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:37,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:37,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:37,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:37,785 INFO L124 PetriNetUnfolderBase]: 249/510 cut-off events. [2024-06-04 15:22:37,785 INFO L125 PetriNetUnfolderBase]: For 26913/26913 co-relation queries the response was YES. [2024-06-04 15:22:37,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 510 events. 249/510 cut-off events. For 26913/26913 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2353 event pairs, 69 based on Foata normal form. 10/519 useless extension candidates. Maximal degree in co-relation 2477. Up to 421 conditions per place. [2024-06-04 15:22:37,788 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 70 selfloop transitions, 14 changer transitions 8/94 dead transitions. [2024-06-04 15:22:37,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 94 transitions, 781 flow [2024-06-04 15:22:37,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-04 15:22:37,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-04 15:22:37,789 INFO L175 Difference]: Start difference. First operand has 126 places, 79 transitions, 547 flow. Second operand 9 states and 93 transitions. [2024-06-04 15:22:37,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 94 transitions, 781 flow [2024-06-04 15:22:37,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 94 transitions, 723 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 15:22:37,822 INFO L231 Difference]: Finished difference. Result has 126 places, 75 transitions, 499 flow [2024-06-04 15:22:37,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=499, PETRI_PLACES=126, PETRI_TRANSITIONS=75} [2024-06-04 15:22:37,822 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 97 predicate places. [2024-06-04 15:22:37,823 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 75 transitions, 499 flow [2024-06-04 15:22:37,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:37,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:37,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:37,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 15:22:37,824 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:37,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1144482572, now seen corresponding path program 10 times [2024-06-04 15:22:37,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:37,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851753717] [2024-06-04 15:22:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:37,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:38,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:38,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851753717] [2024-06-04 15:22:38,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851753717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:38,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:38,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:38,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618127399] [2024-06-04 15:22:38,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:38,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:38,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:38,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:38,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:38,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:38,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 75 transitions, 499 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:38,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:38,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:38,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:38,888 INFO L124 PetriNetUnfolderBase]: 250/521 cut-off events. [2024-06-04 15:22:38,888 INFO L125 PetriNetUnfolderBase]: For 31576/31576 co-relation queries the response was YES. [2024-06-04 15:22:38,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2773 conditions, 521 events. 250/521 cut-off events. For 31576/31576 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2425 event pairs, 78 based on Foata normal form. 8/528 useless extension candidates. Maximal degree in co-relation 2711. Up to 397 conditions per place. [2024-06-04 15:22:38,892 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 71 selfloop transitions, 9 changer transitions 11/93 dead transitions. [2024-06-04 15:22:38,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 93 transitions, 821 flow [2024-06-04 15:22:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:38,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-04 15:22:38,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-04 15:22:38,893 INFO L175 Difference]: Start difference. First operand has 126 places, 75 transitions, 499 flow. Second operand 9 states and 96 transitions. [2024-06-04 15:22:38,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 93 transitions, 821 flow [2024-06-04 15:22:38,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 93 transitions, 778 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:22:38,957 INFO L231 Difference]: Finished difference. Result has 124 places, 69 transitions, 448 flow [2024-06-04 15:22:38,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=448, PETRI_PLACES=124, PETRI_TRANSITIONS=69} [2024-06-04 15:22:38,958 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2024-06-04 15:22:38,958 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 69 transitions, 448 flow [2024-06-04 15:22:38,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:38,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:38,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:38,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 15:22:38,959 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:38,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:38,959 INFO L85 PathProgramCache]: Analyzing trace with hash -878785292, now seen corresponding path program 11 times [2024-06-04 15:22:38,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:38,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899239135] [2024-06-04 15:22:38,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:38,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:39,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:39,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899239135] [2024-06-04 15:22:39,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899239135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:39,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:39,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:39,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166968377] [2024-06-04 15:22:39,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:39,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:39,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:39,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:39,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:39,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 69 transitions, 448 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:39,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:39,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:39,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:39,979 INFO L124 PetriNetUnfolderBase]: 222/469 cut-off events. [2024-06-04 15:22:39,979 INFO L125 PetriNetUnfolderBase]: For 28052/28052 co-relation queries the response was YES. [2024-06-04 15:22:39,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2408 conditions, 469 events. 222/469 cut-off events. For 28052/28052 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2136 event pairs, 68 based on Foata normal form. 8/476 useless extension candidates. Maximal degree in co-relation 2347. Up to 353 conditions per place. [2024-06-04 15:22:39,982 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 67 selfloop transitions, 8 changer transitions 11/88 dead transitions. [2024-06-04 15:22:39,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 88 transitions, 752 flow [2024-06-04 15:22:39,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:22:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:22:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-04 15:22:39,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666666666666667 [2024-06-04 15:22:39,983 INFO L175 Difference]: Start difference. First operand has 124 places, 69 transitions, 448 flow. Second operand 10 states and 101 transitions. [2024-06-04 15:22:39,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 88 transitions, 752 flow [2024-06-04 15:22:40,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 88 transitions, 719 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-04 15:22:40,012 INFO L231 Difference]: Finished difference. Result has 119 places, 64 transitions, 409 flow [2024-06-04 15:22:40,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=409, PETRI_PLACES=119, PETRI_TRANSITIONS=64} [2024-06-04 15:22:40,013 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-04 15:22:40,013 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 64 transitions, 409 flow [2024-06-04 15:22:40,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:40,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:40,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:40,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 15:22:40,014 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:40,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:40,014 INFO L85 PathProgramCache]: Analyzing trace with hash 273447535, now seen corresponding path program 1 times [2024-06-04 15:22:40,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:40,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232487666] [2024-06-04 15:22:40,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:40,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:40,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:40,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232487666] [2024-06-04 15:22:40,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232487666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:40,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:40,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:40,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470581029] [2024-06-04 15:22:40,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:40,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:40,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:40,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:40,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:40,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:40,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 64 transitions, 409 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:40,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:40,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:40,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:41,071 INFO L124 PetriNetUnfolderBase]: 207/440 cut-off events. [2024-06-04 15:22:41,071 INFO L125 PetriNetUnfolderBase]: For 22810/22810 co-relation queries the response was YES. [2024-06-04 15:22:41,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2241 conditions, 440 events. 207/440 cut-off events. For 22810/22810 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1959 event pairs, 64 based on Foata normal form. 6/445 useless extension candidates. Maximal degree in co-relation 2183. Up to 346 conditions per place. [2024-06-04 15:22:41,074 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 56 selfloop transitions, 7 changer transitions 17/82 dead transitions. [2024-06-04 15:22:41,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 82 transitions, 613 flow [2024-06-04 15:22:41,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-04 15:22:41,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337037037037037 [2024-06-04 15:22:41,089 INFO L175 Difference]: Start difference. First operand has 119 places, 64 transitions, 409 flow. Second operand 9 states and 91 transitions. [2024-06-04 15:22:41,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 82 transitions, 613 flow [2024-06-04 15:22:41,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 82 transitions, 571 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-04 15:22:41,117 INFO L231 Difference]: Finished difference. Result has 113 places, 60 transitions, 366 flow [2024-06-04 15:22:41,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=366, PETRI_PLACES=113, PETRI_TRANSITIONS=60} [2024-06-04 15:22:41,118 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-06-04 15:22:41,118 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 60 transitions, 366 flow [2024-06-04 15:22:41,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:41,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:41,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:41,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 15:22:41,119 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:41,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:41,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1994472431, now seen corresponding path program 2 times [2024-06-04 15:22:41,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:41,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961981358] [2024-06-04 15:22:41,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:41,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:41,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:41,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961981358] [2024-06-04 15:22:41,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961981358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:41,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:41,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:41,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80599338] [2024-06-04 15:22:41,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:41,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:41,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:41,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:41,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:41,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:41,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 60 transitions, 366 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:41,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:41,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:41,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:41,991 INFO L124 PetriNetUnfolderBase]: 187/402 cut-off events. [2024-06-04 15:22:41,991 INFO L125 PetriNetUnfolderBase]: For 18357/18357 co-relation queries the response was YES. [2024-06-04 15:22:41,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1985 conditions, 402 events. 187/402 cut-off events. For 18357/18357 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1741 event pairs, 51 based on Foata normal form. 6/407 useless extension candidates. Maximal degree in co-relation 1930. Up to 238 conditions per place. [2024-06-04 15:22:41,994 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 45 selfloop transitions, 15 changer transitions 13/75 dead transitions. [2024-06-04 15:22:41,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 75 transitions, 548 flow [2024-06-04 15:22:42,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:42,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-04 15:22:42,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 15:22:42,011 INFO L175 Difference]: Start difference. First operand has 113 places, 60 transitions, 366 flow. Second operand 9 states and 90 transitions. [2024-06-04 15:22:42,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 75 transitions, 548 flow [2024-06-04 15:22:42,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 75 transitions, 526 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:22:42,039 INFO L231 Difference]: Finished difference. Result has 107 places, 53 transitions, 340 flow [2024-06-04 15:22:42,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=340, PETRI_PLACES=107, PETRI_TRANSITIONS=53} [2024-06-04 15:22:42,040 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-06-04 15:22:42,040 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 53 transitions, 340 flow [2024-06-04 15:22:42,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:42,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:42,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:42,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 15:22:42,041 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:42,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:42,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1994587751, now seen corresponding path program 3 times [2024-06-04 15:22:42,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:42,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863036781] [2024-06-04 15:22:42,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:42,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:42,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:42,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863036781] [2024-06-04 15:22:42,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863036781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:42,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:42,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:42,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023564762] [2024-06-04 15:22:42,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:42,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:42,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:42,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:42,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:42,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:42,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 53 transitions, 340 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:42,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:42,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:42,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:43,125 INFO L124 PetriNetUnfolderBase]: 150/331 cut-off events. [2024-06-04 15:22:43,125 INFO L125 PetriNetUnfolderBase]: For 12325/12325 co-relation queries the response was YES. [2024-06-04 15:22:43,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 331 events. 150/331 cut-off events. For 12325/12325 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1345 event pairs, 43 based on Foata normal form. 6/336 useless extension candidates. Maximal degree in co-relation 1510. Up to 189 conditions per place. [2024-06-04 15:22:43,127 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 29 selfloop transitions, 3 changer transitions 34/68 dead transitions. [2024-06-04 15:22:43,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 68 transitions, 510 flow [2024-06-04 15:22:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:43,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-04 15:22:43,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-04 15:22:43,128 INFO L175 Difference]: Start difference. First operand has 107 places, 53 transitions, 340 flow. Second operand 9 states and 89 transitions. [2024-06-04 15:22:43,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 68 transitions, 510 flow [2024-06-04 15:22:43,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 68 transitions, 470 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:22:43,143 INFO L231 Difference]: Finished difference. Result has 99 places, 33 transitions, 186 flow [2024-06-04 15:22:43,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=186, PETRI_PLACES=99, PETRI_TRANSITIONS=33} [2024-06-04 15:22:43,143 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-04 15:22:43,144 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 33 transitions, 186 flow [2024-06-04 15:22:43,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:43,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:43,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:43,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 15:22:43,144 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:43,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:43,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1776279057, now seen corresponding path program 4 times [2024-06-04 15:22:43,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:43,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683740164] [2024-06-04 15:22:43,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:43,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:43,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:43,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683740164] [2024-06-04 15:22:43,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683740164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:43,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:43,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:22:43,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36280875] [2024-06-04 15:22:43,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:43,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:22:43,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:43,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:22:43,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:22:44,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:44,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 33 transitions, 186 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:44,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:44,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:44,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:44,175 INFO L124 PetriNetUnfolderBase]: 81/185 cut-off events. [2024-06-04 15:22:44,175 INFO L125 PetriNetUnfolderBase]: For 7002/7002 co-relation queries the response was YES. [2024-06-04 15:22:44,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 185 events. 81/185 cut-off events. For 7002/7002 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 608 event pairs, 28 based on Foata normal form. 6/191 useless extension candidates. Maximal degree in co-relation 805. Up to 95 conditions per place. [2024-06-04 15:22:44,176 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 20 selfloop transitions, 7 changer transitions 15/44 dead transitions. [2024-06-04 15:22:44,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 44 transitions, 296 flow [2024-06-04 15:22:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-06-04 15:22:44,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-04 15:22:44,177 INFO L175 Difference]: Start difference. First operand has 99 places, 33 transitions, 186 flow. Second operand 9 states and 81 transitions. [2024-06-04 15:22:44,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 44 transitions, 296 flow [2024-06-04 15:22:44,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 44 transitions, 258 flow, removed 15 selfloop flow, removed 18 redundant places. [2024-06-04 15:22:44,182 INFO L231 Difference]: Finished difference. Result has 67 places, 26 transitions, 133 flow [2024-06-04 15:22:44,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=133, PETRI_PLACES=67, PETRI_TRANSITIONS=26} [2024-06-04 15:22:44,183 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-04 15:22:44,183 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 26 transitions, 133 flow [2024-06-04 15:22:44,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:44,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:44,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:44,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 15:22:44,184 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:44,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:44,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1266382509, now seen corresponding path program 5 times [2024-06-04 15:22:44,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:44,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133683434] [2024-06-04 15:22:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:44,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:45,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:45,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133683434] [2024-06-04 15:22:45,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133683434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:45,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:45,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:22:45,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57568573] [2024-06-04 15:22:45,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:45,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:22:45,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:22:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:22:45,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:45,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 26 transitions, 133 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:45,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:45,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:45,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:45,307 INFO L124 PetriNetUnfolderBase]: 47/115 cut-off events. [2024-06-04 15:22:45,307 INFO L125 PetriNetUnfolderBase]: For 1532/1532 co-relation queries the response was YES. [2024-06-04 15:22:45,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 115 events. 47/115 cut-off events. For 1532/1532 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 290 event pairs, 4 based on Foata normal form. 6/121 useless extension candidates. Maximal degree in co-relation 388. Up to 38 conditions per place. [2024-06-04 15:22:45,308 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 18 selfloop transitions, 7 changer transitions 11/38 dead transitions. [2024-06-04 15:22:45,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 38 transitions, 231 flow [2024-06-04 15:22:45,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:22:45,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:22:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 84 transitions. [2024-06-04 15:22:45,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28 [2024-06-04 15:22:45,309 INFO L175 Difference]: Start difference. First operand has 67 places, 26 transitions, 133 flow. Second operand 10 states and 84 transitions. [2024-06-04 15:22:45,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 38 transitions, 231 flow [2024-06-04 15:22:45,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 38 transitions, 205 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:22:45,310 INFO L231 Difference]: Finished difference. Result has 57 places, 21 transitions, 100 flow [2024-06-04 15:22:45,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=100, PETRI_PLACES=57, PETRI_TRANSITIONS=21} [2024-06-04 15:22:45,310 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-04 15:22:45,311 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 21 transitions, 100 flow [2024-06-04 15:22:45,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:45,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:45,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:45,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 15:22:45,311 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:22:45,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:45,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1125891705, now seen corresponding path program 6 times [2024-06-04 15:22:45,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:45,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137567355] [2024-06-04 15:22:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:45,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:46,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:46,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137567355] [2024-06-04 15:22:46,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137567355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:46,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:46,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:22:46,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999592797] [2024-06-04 15:22:46,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:46,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:22:46,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:46,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:22:46,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:22:46,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:22:46,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 21 transitions, 100 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:46,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:46,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:22:46,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:46,297 INFO L124 PetriNetUnfolderBase]: 19/55 cut-off events. [2024-06-04 15:22:46,297 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2024-06-04 15:22:46,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 55 events. 19/55 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 6/61 useless extension candidates. Maximal degree in co-relation 150. Up to 24 conditions per place. [2024-06-04 15:22:46,297 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2024-06-04 15:22:46,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 26 transitions, 136 flow [2024-06-04 15:22:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:22:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:22:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 70 transitions. [2024-06-04 15:22:46,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25925925925925924 [2024-06-04 15:22:46,298 INFO L175 Difference]: Start difference. First operand has 57 places, 21 transitions, 100 flow. Second operand 9 states and 70 transitions. [2024-06-04 15:22:46,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 26 transitions, 136 flow [2024-06-04 15:22:46,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 26 transitions, 108 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-04 15:22:46,299 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-04 15:22:46,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-04 15:22:46,300 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-04 15:22:46,300 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-04 15:22:46,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:46,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 15:22:46,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 15:22:46,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 15:22:46,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 15:22:46,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 15:22:46,316 INFO L445 BasicCegarLoop]: Path program histogram: [11, 8, 6, 6, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:46,318 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 15:22:46,319 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 15:22:46,322 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 15:22:46,322 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 15:22:46,323 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 03:22:46 BasicIcfg [2024-06-04 15:22:46,323 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 15:22:46,323 INFO L158 Benchmark]: Toolchain (without parser) took 60803.32ms. Allocated memory was 138.4MB in the beginning and 1.1GB in the end (delta: 954.2MB). Free memory was 59.9MB in the beginning and 903.6MB in the end (delta: -843.6MB). Peak memory consumption was 112.3MB. Max. memory is 16.1GB. [2024-06-04 15:22:46,323 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:22:46,324 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 138.4MB. Free memory is still 65.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:22:46,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.78ms. Allocated memory was 138.4MB in the beginning and 266.3MB in the end (delta: 127.9MB). Free memory was 59.7MB in the beginning and 212.2MB in the end (delta: -152.4MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2024-06-04 15:22:46,324 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.37ms. Allocated memory is still 266.3MB. Free memory was 212.2MB in the beginning and 209.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 15:22:46,324 INFO L158 Benchmark]: Boogie Preprocessor took 74.51ms. Allocated memory is still 266.3MB. Free memory was 209.0MB in the beginning and 205.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 15:22:46,325 INFO L158 Benchmark]: RCFGBuilder took 755.08ms. Allocated memory is still 266.3MB. Free memory was 205.9MB in the beginning and 154.5MB in the end (delta: 51.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2024-06-04 15:22:46,325 INFO L158 Benchmark]: TraceAbstraction took 59288.65ms. Allocated memory was 266.3MB in the beginning and 1.1GB in the end (delta: 826.3MB). Free memory was 153.4MB in the beginning and 903.6MB in the end (delta: -750.1MB). Peak memory consumption was 77.2MB. Max. memory is 16.1GB. [2024-06-04 15:22:46,326 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 138.4MB. Free memory is still 65.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.78ms. Allocated memory was 138.4MB in the beginning and 266.3MB in the end (delta: 127.9MB). Free memory was 59.7MB in the beginning and 212.2MB in the end (delta: -152.4MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.37ms. Allocated memory is still 266.3MB. Free memory was 212.2MB in the beginning and 209.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.51ms. Allocated memory is still 266.3MB. Free memory was 209.0MB in the beginning and 205.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 755.08ms. Allocated memory is still 266.3MB. Free memory was 205.9MB in the beginning and 154.5MB in the end (delta: 51.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * TraceAbstraction took 59288.65ms. Allocated memory was 266.3MB in the beginning and 1.1GB in the end (delta: 826.3MB). Free memory was 153.4MB in the beginning and 903.6MB in the end (delta: -750.1MB). Peak memory consumption was 77.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 795]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 796]: 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, 47 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: 59.2s, OverallIterations: 61, TraceHistogramMax: 1, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 17.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2903 SdHoareTripleChecker+Valid, 10.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2456 mSDsluCounter, 1241 SdHoareTripleChecker+Invalid, 8.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1056 mSDsCounter, 580 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15298 IncrementalHoareTripleChecker+Invalid, 15878 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 580 mSolverCounterUnsat, 185 mSDtfsCounter, 15298 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 560 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=892occurred in iteration=32, InterpolantAutomatonStates: 499, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 40.5s InterpolantComputationTime, 939 NumberOfCodeBlocks, 939 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 878 ConstructedInterpolants, 0 QuantifiedInterpolants, 36294 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 61 InterpolantComputations, 61 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 15:22:46,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE