./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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 15:27:25,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:27:25,443 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:27:25,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:27:25,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:27:25,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:27:25,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:27:25,468 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:27:25,468 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:27:25,471 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:27:25,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:27:25,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:27:25,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:27:25,473 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:27:25,473 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:27:25,474 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:27:25,474 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:27:25,474 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:27:25,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:27:25,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:27:25,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:27:25,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:27:25,476 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:27:25,476 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:27:25,476 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:27:25,476 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:27:25,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:27:25,477 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:27:25,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:27:25,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:27:25,478 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:27:25,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:27:25,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:27:25,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:27:25,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:27:25,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:27:25,479 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:27:25,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:27:25,480 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:27:25,480 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:27:25,480 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:27:25,480 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:27:25,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:27:25,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:27:25,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:27:25,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:27:25,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:27:25,754 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:27:25,754 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:27:25,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-04 15:27:26,770 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:27:27,015 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:27:27,016 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-04 15:27:27,029 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75d17df58/002f62df369544cbbd1d01284b00f334/FLAG248d815c9 [2024-06-04 15:27:27,039 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75d17df58/002f62df369544cbbd1d01284b00f334 [2024-06-04 15:27:27,041 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:27:27,042 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:27:27,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-04 15:27:27,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:27:27,179 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:27:27,181 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:27:27,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:27:27,184 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:27:27,185 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:27:27" (1/2) ... [2024-06-04 15:27:27,186 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65178717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:27, skipping insertion in model container [2024-06-04 15:27:27,186 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:27:27" (1/2) ... [2024-06-04 15:27:27,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a53cd1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:27, skipping insertion in model container [2024-06-04 15:27:27,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:27:27" (2/2) ... [2024-06-04 15:27:27,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65178717 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:27:27, skipping insertion in model container [2024-06-04 15:27:27,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:27:27" (2/2) ... [2024-06-04 15:27:27,191 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:27:27,239 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:27:27,240 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1))) [2024-06-04 15:27:27,240 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1))) [2024-06-04 15:27:27,240 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:27:27,240 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-04 15:27:27,275 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:27:27,562 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:27:27,568 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:27:27,681 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:27:27,729 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:27:27,730 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:27:27 WrapperNode [2024-06-04 15:27:27,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:27:27,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:27:27,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:27:27,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:27:27,737 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 03:27:27" (1/1) ... [2024-06-04 15:27:27,763 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 03:27:27" (1/1) ... [2024-06-04 15:27:27,796 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 113 [2024-06-04 15:27:27,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:27:27,798 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:27:27,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:27:27,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:27:27,806 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 03:27:27" (1/1) ... [2024-06-04 15:27:27,807 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 03:27:27" (1/1) ... [2024-06-04 15:27:27,820 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 03:27:27" (1/1) ... [2024-06-04 15:27:27,835 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 15:27:27,836 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 03:27:27" (1/1) ... [2024-06-04 15:27:27,836 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 03:27:27" (1/1) ... [2024-06-04 15:27:27,841 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 03:27:27" (1/1) ... [2024-06-04 15:27:27,865 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 03:27:27" (1/1) ... [2024-06-04 15:27:27,866 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 03:27:27" (1/1) ... [2024-06-04 15:27:27,867 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 03:27:27" (1/1) ... [2024-06-04 15:27:27,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:27:27,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:27:27,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:27:27,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:27:27,870 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 03:27:27" (1/1) ... [2024-06-04 15:27:27,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:27:27,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:27:27,926 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 15:27:27,937 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 15:27:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:27:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:27:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:27:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:27:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:27:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:27:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:27:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:27:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:27:27,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:27:27,958 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 15:27:28,090 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:27:28,092 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:27:28,363 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:27:28,363 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:27:28,471 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:27:28,471 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:27:28,471 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:27:28 BoogieIcfgContainer [2024-06-04 15:27:28,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:27:28,473 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:27:28,473 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:27:28,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:27:28,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:27:27" (1/4) ... [2024-06-04 15:27:28,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b86dc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:27:28, skipping insertion in model container [2024-06-04 15:27:28,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:27:27" (2/4) ... [2024-06-04 15:27:28,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b86dc08 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:27:28, skipping insertion in model container [2024-06-04 15:27:28,477 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 03:27:27" (3/4) ... [2024-06-04 15:27:28,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b86dc08 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:27:28, skipping insertion in model container [2024-06-04 15:27:28,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:27:28" (4/4) ... [2024-06-04 15:27:28,478 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-04 15:27:28,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:27:28,490 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 15:27:28,490 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:27:28,518 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:27:28,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-04 15:27:28,556 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-04 15:27:28,556 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:27:28,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:27:28,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-04 15:27:28,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-04 15:27:28,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:27:28,590 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;@3a07bd4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:27:28,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 15:27:28,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:27:28,594 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:27:28,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:27:28,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:28,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:27:28,595 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 15:27:28,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:28,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1505849308, now seen corresponding path program 1 times [2024-06-04 15:27:28,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:28,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567320937] [2024-06-04 15:27:28,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:28,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:29,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:29,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567320937] [2024-06-04 15:27:29,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567320937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:29,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:29,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:27:29,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449464313] [2024-06-04 15:27:29,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:29,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:27:29,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:29,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:27:29,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:27:29,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-04 15:27:29,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:29,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:29,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-04 15:27:29,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:29,401 INFO L124 PetriNetUnfolderBase]: 162/307 cut-off events. [2024-06-04 15:27:29,401 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-04 15:27:29,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 307 events. 162/307 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1113 event pairs, 97 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 606. Up to 288 conditions per place. [2024-06-04 15:27:29,407 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-04 15:27:29,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 119 flow [2024-06-04 15:27:29,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:27:29,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:27:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-06-04 15:27:29,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2024-06-04 15:27:29,417 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 52 transitions. [2024-06-04 15:27:29,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 119 flow [2024-06-04 15:27:29,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 15:27:29,420 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-04 15:27:29,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-04 15:27:29,424 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-04 15:27:29,424 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-04 15:27:29,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:29,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:29,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:29,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:27:29,425 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 15:27:29,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:29,426 INFO L85 PathProgramCache]: Analyzing trace with hash -282759621, now seen corresponding path program 1 times [2024-06-04 15:27:29,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:29,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800865310] [2024-06-04 15:27:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:29,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:29,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:29,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800865310] [2024-06-04 15:27:29,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800865310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:29,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:29,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:27:29,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655064431] [2024-06-04 15:27:29,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:29,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:27:29,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:29,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:27:29,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:27:29,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-04 15:27:29,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:29,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:29,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-04 15:27:29,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:29,980 INFO L124 PetriNetUnfolderBase]: 159/304 cut-off events. [2024-06-04 15:27:29,980 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-04 15:27:29,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 304 events. 159/304 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1089 event pairs, 79 based on Foata normal form. 2/306 useless extension candidates. Maximal degree in co-relation 679. Up to 274 conditions per place. [2024-06-04 15:27:29,984 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-04 15:27:29,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 161 flow [2024-06-04 15:27:29,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:27:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:27:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-06-04 15:27:29,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-06-04 15:27:29,988 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 66 transitions. [2024-06-04 15:27:29,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 161 flow [2024-06-04 15:27:29,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:27:29,991 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-04 15:27:29,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-04 15:27:29,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-04 15:27:29,993 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-04 15:27:29,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:29,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:29,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:29,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:27:29,994 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 15:27:30,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:30,005 INFO L85 PathProgramCache]: Analyzing trace with hash -175612531, now seen corresponding path program 1 times [2024-06-04 15:27:30,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:30,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655193860] [2024-06-04 15:27:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:30,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:30,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:30,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:30,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655193860] [2024-06-04 15:27:30,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655193860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:30,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:30,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:27:30,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629452123] [2024-06-04 15:27:30,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:30,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 15:27:30,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:30,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 15:27:30,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 15:27:30,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-04 15:27:30,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:30,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:30,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-04 15:27:30,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:30,569 INFO L124 PetriNetUnfolderBase]: 187/339 cut-off events. [2024-06-04 15:27:30,570 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-06-04 15:27:30,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 339 events. 187/339 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1188 event pairs, 67 based on Foata normal form. 3/342 useless extension candidates. Maximal degree in co-relation 852. Up to 293 conditions per place. [2024-06-04 15:27:30,571 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-04 15:27:30,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 255 flow [2024-06-04 15:27:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:27:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:27:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-04 15:27:30,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5290322580645161 [2024-06-04 15:27:30,573 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 82 transitions. [2024-06-04 15:27:30,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 255 flow [2024-06-04 15:27:30,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 246 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 15:27:30,575 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 162 flow [2024-06-04 15:27:30,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-06-04 15:27:30,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-04 15:27:30,575 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 162 flow [2024-06-04 15:27:30,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:30,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:30,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:30,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:27:30,576 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 15:27:30,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:30,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1149020006, now seen corresponding path program 1 times [2024-06-04 15:27:30,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:30,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176179940] [2024-06-04 15:27:30,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:30,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:31,248 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 15:27:31,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:31,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176179940] [2024-06-04 15:27:31,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176179940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:31,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:31,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:27:31,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547809760] [2024-06-04 15:27:31,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:31,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:27:31,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:31,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:27:31,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:27:31,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-04 15:27:31,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:31,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:31,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-04 15:27:31,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:31,385 INFO L124 PetriNetUnfolderBase]: 188/341 cut-off events. [2024-06-04 15:27:31,386 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-04 15:27:31,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 341 events. 188/341 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1198 event pairs, 46 based on Foata normal form. 3/344 useless extension candidates. Maximal degree in co-relation 1026. Up to 282 conditions per place. [2024-06-04 15:27:31,388 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 40 selfloop transitions, 14 changer transitions 0/56 dead transitions. [2024-06-04 15:27:31,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 340 flow [2024-06-04 15:27:31,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:27:31,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:27:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-04 15:27:31,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-06-04 15:27:31,390 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 162 flow. Second operand 6 states and 96 transitions. [2024-06-04 15:27:31,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 340 flow [2024-06-04 15:27:31,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 336 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-04 15:27:31,392 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 214 flow [2024-06-04 15:27:31,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-04 15:27:31,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-04 15:27:31,393 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 214 flow [2024-06-04 15:27:31,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:31,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:31,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:31,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:27:31,394 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:27:31,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:31,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1260475274, now seen corresponding path program 1 times [2024-06-04 15:27:31,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:31,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314493171] [2024-06-04 15:27:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:31,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:31,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:31,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314493171] [2024-06-04 15:27:31,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314493171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:31,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:31,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:27:31,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450996317] [2024-06-04 15:27:31,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:31,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:27:31,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:31,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:27:31,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:27:32,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-04 15:27:32,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:32,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:32,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-04 15:27:32,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:32,224 INFO L124 PetriNetUnfolderBase]: 189/344 cut-off events. [2024-06-04 15:27:32,225 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-04 15:27:32,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 344 events. 189/344 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1218 event pairs, 24 based on Foata normal form. 6/350 useless extension candidates. Maximal degree in co-relation 1156. Up to 259 conditions per place. [2024-06-04 15:27:32,227 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 40 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-04 15:27:32,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 386 flow [2024-06-04 15:27:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:27:32,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:27:32,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-04 15:27:32,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838709677419355 [2024-06-04 15:27:32,228 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 214 flow. Second operand 7 states and 105 transitions. [2024-06-04 15:27:32,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 386 flow [2024-06-04 15:27:32,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 354 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 15:27:32,231 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 217 flow [2024-06-04 15:27:32,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-04 15:27:32,232 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-04 15:27:32,232 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 217 flow [2024-06-04 15:27:32,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:32,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:32,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:32,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:27:32,233 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 15:27:32,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:32,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1934851801, now seen corresponding path program 1 times [2024-06-04 15:27:32,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:32,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084116763] [2024-06-04 15:27:32,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:32,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:32,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:32,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084116763] [2024-06-04 15:27:32,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084116763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:32,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:32,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:27:32,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277756304] [2024-06-04 15:27:32,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:32,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:27:32,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:32,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:27:32,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:27:32,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:32,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 217 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 15:27:32,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:32,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:32,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:32,766 INFO L124 PetriNetUnfolderBase]: 187/341 cut-off events. [2024-06-04 15:27:32,767 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-04 15:27:32,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 341 events. 187/341 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1194 event pairs, 47 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 1202. Up to 329 conditions per place. [2024-06-04 15:27:32,769 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 35 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-06-04 15:27:32,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 311 flow [2024-06-04 15:27:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:27:32,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:27:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-06-04 15:27:32,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-04 15:27:32,770 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 217 flow. Second operand 5 states and 60 transitions. [2024-06-04 15:27:32,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 311 flow [2024-06-04 15:27:32,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 270 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 15:27:32,772 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 193 flow [2024-06-04 15:27:32,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-04 15:27:32,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-04 15:27:32,773 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 193 flow [2024-06-04 15:27:32,774 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 15:27:32,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:32,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:32,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:27:32,774 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 15:27:32,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:32,774 INFO L85 PathProgramCache]: Analyzing trace with hash 137115187, now seen corresponding path program 1 times [2024-06-04 15:27:32,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:32,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056048640] [2024-06-04 15:27:32,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:32,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:33,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:33,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056048640] [2024-06-04 15:27:33,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056048640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:33,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:33,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:27:33,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740151403] [2024-06-04 15:27:33,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:33,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:27:33,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:33,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:27:33,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:27:33,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:33,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:33,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:33,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:33,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:33,465 INFO L124 PetriNetUnfolderBase]: 181/332 cut-off events. [2024-06-04 15:27:33,466 INFO L125 PetriNetUnfolderBase]: For 877/877 co-relation queries the response was YES. [2024-06-04 15:27:33,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 332 events. 181/332 cut-off events. For 877/877 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1134 event pairs, 44 based on Foata normal form. 3/335 useless extension candidates. Maximal degree in co-relation 1128. Up to 311 conditions per place. [2024-06-04 15:27:33,468 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 38 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-04 15:27:33,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 311 flow [2024-06-04 15:27:33,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:27:33,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:27:33,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-04 15:27:33,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-04 15:27:33,469 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 193 flow. Second operand 6 states and 71 transitions. [2024-06-04 15:27:33,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 311 flow [2024-06-04 15:27:33,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 296 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-04 15:27:33,471 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 211 flow [2024-06-04 15:27:33,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-04 15:27:33,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-04 15:27:33,472 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 211 flow [2024-06-04 15:27:33,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:33,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:33,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:33,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:27:33,473 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 15:27:33,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:33,473 INFO L85 PathProgramCache]: Analyzing trace with hash -514451052, now seen corresponding path program 1 times [2024-06-04 15:27:33,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:33,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711287578] [2024-06-04 15:27:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:33,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:33,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:33,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711287578] [2024-06-04 15:27:33,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711287578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:33,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:33,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:27:33,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690269134] [2024-06-04 15:27:33,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:33,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:27:33,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:33,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:27:33,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:27:33,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:33,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:33,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:33,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:33,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:34,047 INFO L124 PetriNetUnfolderBase]: 182/334 cut-off events. [2024-06-04 15:27:34,047 INFO L125 PetriNetUnfolderBase]: For 1009/1009 co-relation queries the response was YES. [2024-06-04 15:27:34,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 334 events. 182/334 cut-off events. For 1009/1009 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1159 event pairs, 43 based on Foata normal form. 2/336 useless extension candidates. Maximal degree in co-relation 1200. Up to 288 conditions per place. [2024-06-04 15:27:34,049 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-04 15:27:34,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 362 flow [2024-06-04 15:27:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:27:34,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:27:34,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-04 15:27:34,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-04 15:27:34,050 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 211 flow. Second operand 6 states and 77 transitions. [2024-06-04 15:27:34,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 362 flow [2024-06-04 15:27:34,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 345 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 15:27:34,053 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 242 flow [2024-06-04 15:27:34,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-04 15:27:34,053 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-04 15:27:34,053 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 242 flow [2024-06-04 15:27:34,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:34,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:34,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:34,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:27:34,054 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 15:27:34,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:34,055 INFO L85 PathProgramCache]: Analyzing trace with hash 328281990, now seen corresponding path program 2 times [2024-06-04 15:27:34,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:34,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344867636] [2024-06-04 15:27:34,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:34,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:34,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:34,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344867636] [2024-06-04 15:27:34,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344867636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:34,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:34,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:27:34,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647856919] [2024-06-04 15:27:34,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:34,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:27:34,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:34,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:27:34,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:27:34,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:34,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:34,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:34,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:34,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:34,695 INFO L124 PetriNetUnfolderBase]: 177/324 cut-off events. [2024-06-04 15:27:34,696 INFO L125 PetriNetUnfolderBase]: For 1164/1164 co-relation queries the response was YES. [2024-06-04 15:27:34,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 324 events. 177/324 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1095 event pairs, 42 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 1201. Up to 309 conditions per place. [2024-06-04 15:27:34,697 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 38 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-04 15:27:34,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 348 flow [2024-06-04 15:27:34,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:27:34,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:27:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-04 15:27:34,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-04 15:27:34,699 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 242 flow. Second operand 6 states and 69 transitions. [2024-06-04 15:27:34,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 348 flow [2024-06-04 15:27:34,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 333 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 15:27:34,701 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 248 flow [2024-06-04 15:27:34,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-04 15:27:34,702 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-04 15:27:34,702 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 248 flow [2024-06-04 15:27:34,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:34,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:34,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:34,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:27:34,702 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 15:27:34,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:34,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1553636556, now seen corresponding path program 1 times [2024-06-04 15:27:34,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:34,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473525863] [2024-06-04 15:27:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:34,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:35,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:35,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473525863] [2024-06-04 15:27:35,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473525863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:35,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:35,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:27:35,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544065436] [2024-06-04 15:27:35,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:35,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:27:35,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:35,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:27:35,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:27:35,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:35,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 248 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:35,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:35,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:35,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:35,423 INFO L124 PetriNetUnfolderBase]: 215/386 cut-off events. [2024-06-04 15:27:35,423 INFO L125 PetriNetUnfolderBase]: For 1838/1838 co-relation queries the response was YES. [2024-06-04 15:27:35,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 386 events. 215/386 cut-off events. For 1838/1838 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1391 event pairs, 50 based on Foata normal form. 6/392 useless extension candidates. Maximal degree in co-relation 1435. Up to 276 conditions per place. [2024-06-04 15:27:35,426 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 46 selfloop transitions, 17 changer transitions 0/65 dead transitions. [2024-06-04 15:27:35,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 460 flow [2024-06-04 15:27:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:27:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:27:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-04 15:27:35,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 15:27:35,427 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 248 flow. Second operand 7 states and 93 transitions. [2024-06-04 15:27:35,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 460 flow [2024-06-04 15:27:35,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 426 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 15:27:35,430 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 297 flow [2024-06-04 15:27:35,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-04 15:27:35,431 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-06-04 15:27:35,431 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 297 flow [2024-06-04 15:27:35,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:35,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:35,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:35,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:27:35,432 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 15:27:35,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:35,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1587045232, now seen corresponding path program 2 times [2024-06-04 15:27:35,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:35,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031971157] [2024-06-04 15:27:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:35,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:35,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:35,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031971157] [2024-06-04 15:27:35,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031971157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:35,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:35,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:27:35,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397612940] [2024-06-04 15:27:35,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:35,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:27:35,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:35,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:27:35,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:27:35,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:35,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 297 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:35,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:35,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:35,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:36,113 INFO L124 PetriNetUnfolderBase]: 224/401 cut-off events. [2024-06-04 15:27:36,114 INFO L125 PetriNetUnfolderBase]: For 2087/2087 co-relation queries the response was YES. [2024-06-04 15:27:36,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 401 events. 224/401 cut-off events. For 2087/2087 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1441 event pairs, 52 based on Foata normal form. 3/404 useless extension candidates. Maximal degree in co-relation 1647. Up to 377 conditions per place. [2024-06-04 15:27:36,116 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-04 15:27:36,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 60 transitions, 449 flow [2024-06-04 15:27:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:27:36,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:27:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-04 15:27:36,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-04 15:27:36,118 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 297 flow. Second operand 7 states and 80 transitions. [2024-06-04 15:27:36,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 60 transitions, 449 flow [2024-06-04 15:27:36,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 434 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 15:27:36,122 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 325 flow [2024-06-04 15:27:36,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-06-04 15:27:36,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-04 15:27:36,124 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 325 flow [2024-06-04 15:27:36,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:36,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:36,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:36,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:27:36,124 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 15:27:36,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:36,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1198929262, now seen corresponding path program 3 times [2024-06-04 15:27:36,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:36,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621537583] [2024-06-04 15:27:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:36,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:36,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:36,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621537583] [2024-06-04 15:27:36,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621537583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:36,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:36,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:27:36,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455021840] [2024-06-04 15:27:36,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:36,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:27:36,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:36,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:27:36,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:27:36,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:36,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:36,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:36,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:36,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:36,838 INFO L124 PetriNetUnfolderBase]: 218/392 cut-off events. [2024-06-04 15:27:36,839 INFO L125 PetriNetUnfolderBase]: For 2404/2404 co-relation queries the response was YES. [2024-06-04 15:27:36,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 392 events. 218/392 cut-off events. For 2404/2404 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1409 event pairs, 46 based on Foata normal form. 3/395 useless extension candidates. Maximal degree in co-relation 1646. Up to 356 conditions per place. [2024-06-04 15:27:36,841 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 49 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2024-06-04 15:27:36,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 495 flow [2024-06-04 15:27:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:27:36,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:27:36,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-04 15:27:36,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-04 15:27:36,842 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 325 flow. Second operand 7 states and 84 transitions. [2024-06-04 15:27:36,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 495 flow [2024-06-04 15:27:36,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 468 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 15:27:36,846 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 351 flow [2024-06-04 15:27:36,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-06-04 15:27:36,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-04 15:27:36,846 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 351 flow [2024-06-04 15:27:36,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:36,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:36,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:36,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:27:36,847 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 15:27:36,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:36,848 INFO L85 PathProgramCache]: Analyzing trace with hash -470005645, now seen corresponding path program 1 times [2024-06-04 15:27:36,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:36,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483070196] [2024-06-04 15:27:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:36,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:37,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:37,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483070196] [2024-06-04 15:27:37,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483070196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:37,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:37,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:27:37,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597787503] [2024-06-04 15:27:37,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:37,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:27:37,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:37,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:27:37,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:27:37,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:37,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 351 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:37,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:37,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:37,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:37,580 INFO L124 PetriNetUnfolderBase]: 221/397 cut-off events. [2024-06-04 15:27:37,580 INFO L125 PetriNetUnfolderBase]: For 2632/2632 co-relation queries the response was YES. [2024-06-04 15:27:37,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1745 conditions, 397 events. 221/397 cut-off events. For 2632/2632 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1432 event pairs, 46 based on Foata normal form. 1/398 useless extension candidates. Maximal degree in co-relation 1712. Up to 334 conditions per place. [2024-06-04 15:27:37,583 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 52 selfloop transitions, 17 changer transitions 0/71 dead transitions. [2024-06-04 15:27:37,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 571 flow [2024-06-04 15:27:37,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:27:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:27:37,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-04 15:27:37,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-04 15:27:37,584 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 351 flow. Second operand 7 states and 89 transitions. [2024-06-04 15:27:37,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 571 flow [2024-06-04 15:27:37,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 536 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 15:27:37,588 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 383 flow [2024-06-04 15:27:37,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-06-04 15:27:37,589 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-04 15:27:37,589 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 383 flow [2024-06-04 15:27:37,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:37,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:37,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:37,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:27:37,590 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 15:27:37,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:37,590 INFO L85 PathProgramCache]: Analyzing trace with hash -469915435, now seen corresponding path program 2 times [2024-06-04 15:27:37,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:37,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774772454] [2024-06-04 15:27:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:37,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:38,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:38,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774772454] [2024-06-04 15:27:38,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774772454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:38,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:38,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:27:38,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309169418] [2024-06-04 15:27:38,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:38,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:27:38,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:38,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:27:38,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:27:38,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:38,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 383 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:38,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:38,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:38,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:38,452 INFO L124 PetriNetUnfolderBase]: 219/394 cut-off events. [2024-06-04 15:27:38,453 INFO L125 PetriNetUnfolderBase]: For 2895/2895 co-relation queries the response was YES. [2024-06-04 15:27:38,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1765 conditions, 394 events. 219/394 cut-off events. For 2895/2895 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1416 event pairs, 46 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 1731. Up to 347 conditions per place. [2024-06-04 15:27:38,455 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 50 selfloop transitions, 15 changer transitions 0/67 dead transitions. [2024-06-04 15:27:38,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 537 flow [2024-06-04 15:27:38,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:27:38,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:27:38,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-04 15:27:38,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-04 15:27:38,456 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 383 flow. Second operand 7 states and 85 transitions. [2024-06-04 15:27:38,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 537 flow [2024-06-04 15:27:38,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 512 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-04 15:27:38,460 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 393 flow [2024-06-04 15:27:38,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=393, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-06-04 15:27:38,461 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-04 15:27:38,461 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 393 flow [2024-06-04 15:27:38,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:38,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:38,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:38,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:27:38,462 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 15:27:38,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:38,462 INFO L85 PathProgramCache]: Analyzing trace with hash -466196210, now seen corresponding path program 1 times [2024-06-04 15:27:38,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:38,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862643806] [2024-06-04 15:27:38,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:38,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:38,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:38,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862643806] [2024-06-04 15:27:38,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862643806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:38,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:38,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:27:38,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854271906] [2024-06-04 15:27:38,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:38,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:27:38,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:38,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:27:38,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:27:39,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:39,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 393 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:39,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:39,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:39,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:39,192 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-04 15:27:39,192 INFO L125 PetriNetUnfolderBase]: For 3517/3517 co-relation queries the response was YES. [2024-06-04 15:27:39,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1870 conditions, 409 events. 228/409 cut-off events. For 3517/3517 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1504 event pairs, 45 based on Foata normal form. 3/412 useless extension candidates. Maximal degree in co-relation 1834. Up to 287 conditions per place. [2024-06-04 15:27:39,195 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 24 changer transitions 0/79 dead transitions. [2024-06-04 15:27:39,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 79 transitions, 643 flow [2024-06-04 15:27:39,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:27:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:27:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-04 15:27:39,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-04 15:27:39,196 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 393 flow. Second operand 7 states and 98 transitions. [2024-06-04 15:27:39,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 79 transitions, 643 flow [2024-06-04 15:27:39,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 79 transitions, 605 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 15:27:39,200 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 424 flow [2024-06-04 15:27:39,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-06-04 15:27:39,201 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-04 15:27:39,201 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 424 flow [2024-06-04 15:27:39,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:39,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:39,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:39,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:27:39,202 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 15:27:39,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:39,202 INFO L85 PathProgramCache]: Analyzing trace with hash -466190630, now seen corresponding path program 2 times [2024-06-04 15:27:39,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:39,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051243000] [2024-06-04 15:27:39,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:39,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:39,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:39,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051243000] [2024-06-04 15:27:39,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051243000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:39,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:39,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:27:39,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503454365] [2024-06-04 15:27:39,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:39,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:27:39,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:39,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:27:39,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:27:39,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:39,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 424 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:39,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:39,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:39,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:40,047 INFO L124 PetriNetUnfolderBase]: 237/424 cut-off events. [2024-06-04 15:27:40,048 INFO L125 PetriNetUnfolderBase]: For 4077/4077 co-relation queries the response was YES. [2024-06-04 15:27:40,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 424 events. 237/424 cut-off events. For 4077/4077 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1566 event pairs, 51 based on Foata normal form. 3/427 useless extension candidates. Maximal degree in co-relation 1970. Up to 295 conditions per place. [2024-06-04 15:27:40,050 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 54 selfloop transitions, 23 changer transitions 0/79 dead transitions. [2024-06-04 15:27:40,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 79 transitions, 674 flow [2024-06-04 15:27:40,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:27:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:27:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-04 15:27:40,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-04 15:27:40,052 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 424 flow. Second operand 8 states and 104 transitions. [2024-06-04 15:27:40,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 79 transitions, 674 flow [2024-06-04 15:27:40,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 614 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 15:27:40,057 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 435 flow [2024-06-04 15:27:40,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=435, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-06-04 15:27:40,058 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-04 15:27:40,058 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 435 flow [2024-06-04 15:27:40,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:40,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:40,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:40,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:27:40,060 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 15:27:40,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:40,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1953770391, now seen corresponding path program 1 times [2024-06-04 15:27:40,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:40,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575931910] [2024-06-04 15:27:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:40,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:40,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:40,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:40,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575931910] [2024-06-04 15:27:40,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575931910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:40,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:40,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:27:40,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946217813] [2024-06-04 15:27:40,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:40,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:27:40,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:40,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:27:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:27:40,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:40,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 435 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:40,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:40,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:40,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:40,964 INFO L124 PetriNetUnfolderBase]: 233/418 cut-off events. [2024-06-04 15:27:40,964 INFO L125 PetriNetUnfolderBase]: For 4177/4177 co-relation queries the response was YES. [2024-06-04 15:27:40,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 418 events. 233/418 cut-off events. For 4177/4177 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1535 event pairs, 45 based on Foata normal form. 2/420 useless extension candidates. Maximal degree in co-relation 1937. Up to 389 conditions per place. [2024-06-04 15:27:40,967 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 59 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-04 15:27:40,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 73 transitions, 617 flow [2024-06-04 15:27:40,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:27:40,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:27:40,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 15:27:40,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-04 15:27:40,970 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 435 flow. Second operand 8 states and 89 transitions. [2024-06-04 15:27:40,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 73 transitions, 617 flow [2024-06-04 15:27:40,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 579 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 15:27:40,976 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 448 flow [2024-06-04 15:27:40,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=448, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2024-06-04 15:27:40,977 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-04 15:27:40,977 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 448 flow [2024-06-04 15:27:40,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:40,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:40,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:40,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:27:40,978 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 15:27:40,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:40,978 INFO L85 PathProgramCache]: Analyzing trace with hash 278017642, now seen corresponding path program 3 times [2024-06-04 15:27:40,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:40,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386009700] [2024-06-04 15:27:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:40,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:41,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:41,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386009700] [2024-06-04 15:27:41,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386009700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:41,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:41,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:27:41,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529328916] [2024-06-04 15:27:41,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:41,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:27:41,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:41,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:27:41,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:27:41,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:41,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:41,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:41,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:41,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:41,820 INFO L124 PetriNetUnfolderBase]: 242/433 cut-off events. [2024-06-04 15:27:41,820 INFO L125 PetriNetUnfolderBase]: For 4765/4765 co-relation queries the response was YES. [2024-06-04 15:27:41,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 433 events. 242/433 cut-off events. For 4765/4765 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1612 event pairs, 46 based on Foata normal form. 3/436 useless extension candidates. Maximal degree in co-relation 1995. Up to 384 conditions per place. [2024-06-04 15:27:41,823 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 62 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2024-06-04 15:27:41,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 656 flow [2024-06-04 15:27:41,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:27:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:27:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 15:27:41,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-04 15:27:41,825 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 448 flow. Second operand 8 states and 95 transitions. [2024-06-04 15:27:41,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 656 flow [2024-06-04 15:27:41,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 618 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:27:41,831 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 467 flow [2024-06-04 15:27:41,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=467, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-04 15:27:41,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-04 15:27:41,832 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 467 flow [2024-06-04 15:27:41,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:41,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:41,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:41,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:27:41,832 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 15:27:41,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash 285369292, now seen corresponding path program 4 times [2024-06-04 15:27:41,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:41,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392011254] [2024-06-04 15:27:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:41,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:42,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:42,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392011254] [2024-06-04 15:27:42,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392011254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:42,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:42,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:27:42,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614422625] [2024-06-04 15:27:42,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:42,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:27:42,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:42,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:27:42,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:27:42,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:42,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 467 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:42,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:42,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:42,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:42,584 INFO L124 PetriNetUnfolderBase]: 236/424 cut-off events. [2024-06-04 15:27:42,584 INFO L125 PetriNetUnfolderBase]: For 4872/4872 co-relation queries the response was YES. [2024-06-04 15:27:42,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 424 events. 236/424 cut-off events. For 4872/4872 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1580 event pairs, 48 based on Foata normal form. 3/427 useless extension candidates. Maximal degree in co-relation 1946. Up to 387 conditions per place. [2024-06-04 15:27:42,586 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 63 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-04 15:27:42,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 77 transitions, 647 flow [2024-06-04 15:27:42,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:27:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:27:42,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 15:27:42,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-04 15:27:42,588 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 467 flow. Second operand 8 states and 91 transitions. [2024-06-04 15:27:42,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 77 transitions, 647 flow [2024-06-04 15:27:42,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 606 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:27:42,594 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 455 flow [2024-06-04 15:27:42,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=455, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-06-04 15:27:42,595 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-04 15:27:42,595 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 455 flow [2024-06-04 15:27:42,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:42,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:42,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:42,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:27:42,595 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 15:27:42,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:42,596 INFO L85 PathProgramCache]: Analyzing trace with hash 285646339, now seen corresponding path program 1 times [2024-06-04 15:27:42,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:42,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079366189] [2024-06-04 15:27:42,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:42,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:43,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:43,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079366189] [2024-06-04 15:27:43,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079366189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:43,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:43,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:27:43,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524470785] [2024-06-04 15:27:43,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:43,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:27:43,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:43,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:27:43,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:27:43,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:43,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 455 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:43,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:43,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:43,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:43,729 INFO L124 PetriNetUnfolderBase]: 233/419 cut-off events. [2024-06-04 15:27:43,729 INFO L125 PetriNetUnfolderBase]: For 4904/4904 co-relation queries the response was YES. [2024-06-04 15:27:43,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1944 conditions, 419 events. 233/419 cut-off events. For 4904/4904 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1541 event pairs, 46 based on Foata normal form. 2/421 useless extension candidates. Maximal degree in co-relation 1903. Up to 392 conditions per place. [2024-06-04 15:27:43,732 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 62 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2024-06-04 15:27:43,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 75 transitions, 623 flow [2024-06-04 15:27:43,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:27:43,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:27:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-04 15:27:43,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-04 15:27:43,733 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 455 flow. Second operand 8 states and 87 transitions. [2024-06-04 15:27:43,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 75 transitions, 623 flow [2024-06-04 15:27:43,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 566 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:43,741 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 424 flow [2024-06-04 15:27:43,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=424, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-06-04 15:27:43,741 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-04 15:27:43,742 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 424 flow [2024-06-04 15:27:43,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:43,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:43,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:43,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:27:43,742 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 15:27:43,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1485588375, now seen corresponding path program 1 times [2024-06-04 15:27:43,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:43,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796112868] [2024-06-04 15:27:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:43,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:44,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:44,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796112868] [2024-06-04 15:27:44,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796112868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:44,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:44,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:27:44,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614588887] [2024-06-04 15:27:44,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:44,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:27:44,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:44,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:27:44,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:27:44,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:44,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 424 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:44,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:44,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:44,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:44,672 INFO L124 PetriNetUnfolderBase]: 237/427 cut-off events. [2024-06-04 15:27:44,672 INFO L125 PetriNetUnfolderBase]: For 5310/5310 co-relation queries the response was YES. [2024-06-04 15:27:44,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1952 conditions, 427 events. 237/427 cut-off events. For 5310/5310 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1593 event pairs, 33 based on Foata normal form. 2/429 useless extension candidates. Maximal degree in co-relation 1910. Up to 322 conditions per place. [2024-06-04 15:27:44,675 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 61 selfloop transitions, 20 changer transitions 0/83 dead transitions. [2024-06-04 15:27:44,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 676 flow [2024-06-04 15:27:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:27:44,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:27:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-04 15:27:44,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-04 15:27:44,676 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 424 flow. Second operand 8 states and 97 transitions. [2024-06-04 15:27:44,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 676 flow [2024-06-04 15:27:44,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 646 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 15:27:44,683 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 448 flow [2024-06-04 15:27:44,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=448, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2024-06-04 15:27:44,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-04 15:27:44,684 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 448 flow [2024-06-04 15:27:44,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:44,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:44,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:44,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:27:44,684 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 15:27:44,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:44,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1485648949, now seen corresponding path program 1 times [2024-06-04 15:27:44,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:44,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022019075] [2024-06-04 15:27:44,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:44,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:45,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:45,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022019075] [2024-06-04 15:27:45,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022019075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:45,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:45,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:27:45,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983300715] [2024-06-04 15:27:45,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:45,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:27:45,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:45,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:27:45,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:27:45,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:45,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:45,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:45,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:45,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:45,460 INFO L124 PetriNetUnfolderBase]: 240/432 cut-off events. [2024-06-04 15:27:45,460 INFO L125 PetriNetUnfolderBase]: For 5606/5606 co-relation queries the response was YES. [2024-06-04 15:27:45,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 432 events. 240/432 cut-off events. For 5606/5606 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1638 event pairs, 38 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 1970. Up to 324 conditions per place. [2024-06-04 15:27:45,463 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 23 changer transitions 0/94 dead transitions. [2024-06-04 15:27:45,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 94 transitions, 777 flow [2024-06-04 15:27:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:27:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:27:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-04 15:27:45,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-04 15:27:45,464 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 448 flow. Second operand 8 states and 101 transitions. [2024-06-04 15:27:45,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 94 transitions, 777 flow [2024-06-04 15:27:45,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 94 transitions, 733 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 15:27:45,470 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 529 flow [2024-06-04 15:27:45,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=529, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-06-04 15:27:45,471 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-04 15:27:45,471 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 529 flow [2024-06-04 15:27:45,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:45,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:45,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:45,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:27:45,472 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 15:27:45,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:45,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1685272247, now seen corresponding path program 2 times [2024-06-04 15:27:45,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:45,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720520151] [2024-06-04 15:27:45,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:45,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:46,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:46,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:46,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720520151] [2024-06-04 15:27:46,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720520151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:46,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:46,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:27:46,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602380084] [2024-06-04 15:27:46,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:46,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:27:46,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:46,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:27:46,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:27:46,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:46,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 529 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:46,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:46,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:46,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:46,367 INFO L124 PetriNetUnfolderBase]: 237/427 cut-off events. [2024-06-04 15:27:46,367 INFO L125 PetriNetUnfolderBase]: For 5990/5990 co-relation queries the response was YES. [2024-06-04 15:27:46,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 427 events. 237/427 cut-off events. For 5990/5990 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1601 event pairs, 48 based on Foata normal form. 2/429 useless extension candidates. Maximal degree in co-relation 2009. Up to 357 conditions per place. [2024-06-04 15:27:46,370 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 21 changer transitions 0/92 dead transitions. [2024-06-04 15:27:46,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 747 flow [2024-06-04 15:27:46,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:27:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:27:46,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 15:27:46,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-04 15:27:46,371 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 529 flow. Second operand 9 states and 107 transitions. [2024-06-04 15:27:46,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 747 flow [2024-06-04 15:27:46,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 707 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-04 15:27:46,379 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 536 flow [2024-06-04 15:27:46,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=536, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2024-06-04 15:27:46,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-04 15:27:46,379 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 536 flow [2024-06-04 15:27:46,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:46,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:46,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:46,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:27:46,380 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 15:27:46,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:46,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1488450109, now seen corresponding path program 2 times [2024-06-04 15:27:46,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:46,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180230961] [2024-06-04 15:27:46,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:46,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:47,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:47,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180230961] [2024-06-04 15:27:47,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180230961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:47,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:47,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:27:47,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143733023] [2024-06-04 15:27:47,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:47,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:27:47,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:47,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:27:47,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:27:47,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:47,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 536 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:47,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:47,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:47,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:47,242 INFO L124 PetriNetUnfolderBase]: 246/442 cut-off events. [2024-06-04 15:27:47,242 INFO L125 PetriNetUnfolderBase]: For 6680/6680 co-relation queries the response was YES. [2024-06-04 15:27:47,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 442 events. 246/442 cut-off events. For 6680/6680 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1681 event pairs, 45 based on Foata normal form. 3/445 useless extension candidates. Maximal degree in co-relation 2050. Up to 300 conditions per place. [2024-06-04 15:27:47,245 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 59 selfloop transitions, 34 changer transitions 0/95 dead transitions. [2024-06-04 15:27:47,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 95 transitions, 785 flow [2024-06-04 15:27:47,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:27:47,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:27:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-04 15:27:47,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-04 15:27:47,246 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 536 flow. Second operand 8 states and 103 transitions. [2024-06-04 15:27:47,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 95 transitions, 785 flow [2024-06-04 15:27:47,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 95 transitions, 738 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:47,254 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 599 flow [2024-06-04 15:27:47,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=599, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-06-04 15:27:47,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-04 15:27:47,254 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 599 flow [2024-06-04 15:27:47,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:47,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:47,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:47,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:27:47,255 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 15:27:47,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:47,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1488445459, now seen corresponding path program 3 times [2024-06-04 15:27:47,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:47,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775395411] [2024-06-04 15:27:47,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:47,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:47,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:47,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775395411] [2024-06-04 15:27:47,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775395411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:47,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:47,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:27:47,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250565270] [2024-06-04 15:27:47,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:47,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:27:47,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:47,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:27:47,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:27:47,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:47,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 599 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:47,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:47,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:47,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:48,066 INFO L124 PetriNetUnfolderBase]: 249/447 cut-off events. [2024-06-04 15:27:48,067 INFO L125 PetriNetUnfolderBase]: For 6748/6748 co-relation queries the response was YES. [2024-06-04 15:27:48,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 447 events. 249/447 cut-off events. For 6748/6748 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1709 event pairs, 45 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 2159. Up to 299 conditions per place. [2024-06-04 15:27:48,069 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 58 selfloop transitions, 38 changer transitions 0/98 dead transitions. [2024-06-04 15:27:48,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 98 transitions, 846 flow [2024-06-04 15:27:48,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:27:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:27:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-04 15:27:48,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-04 15:27:48,072 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 599 flow. Second operand 9 states and 112 transitions. [2024-06-04 15:27:48,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 98 transitions, 846 flow [2024-06-04 15:27:48,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 98 transitions, 772 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 15:27:48,081 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 632 flow [2024-06-04 15:27:48,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=632, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2024-06-04 15:27:48,081 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-04 15:27:48,081 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 632 flow [2024-06-04 15:27:48,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:48,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:48,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:48,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:27:48,082 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 15:27:48,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:48,082 INFO L85 PathProgramCache]: Analyzing trace with hash -763754803, now seen corresponding path program 4 times [2024-06-04 15:27:48,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:48,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737649613] [2024-06-04 15:27:48,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:48,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:48,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:48,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:48,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737649613] [2024-06-04 15:27:48,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737649613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:48,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:48,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:27:48,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004171402] [2024-06-04 15:27:48,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:48,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:27:48,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:48,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:27:48,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:27:48,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:48,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 632 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:48,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:48,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:48,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:48,909 INFO L124 PetriNetUnfolderBase]: 252/452 cut-off events. [2024-06-04 15:27:48,909 INFO L125 PetriNetUnfolderBase]: For 7302/7302 co-relation queries the response was YES. [2024-06-04 15:27:48,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 452 events. 252/452 cut-off events. For 7302/7302 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1731 event pairs, 45 based on Foata normal form. 1/453 useless extension candidates. Maximal degree in co-relation 2226. Up to 356 conditions per place. [2024-06-04 15:27:48,912 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 29 changer transitions 0/106 dead transitions. [2024-06-04 15:27:48,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 979 flow [2024-06-04 15:27:48,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:27:48,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:27:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-04 15:27:48,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-04 15:27:48,914 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 632 flow. Second operand 8 states and 106 transitions. [2024-06-04 15:27:48,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 979 flow [2024-06-04 15:27:48,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 106 transitions, 906 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 15:27:48,923 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 686 flow [2024-06-04 15:27:48,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=686, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2024-06-04 15:27:48,924 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-04 15:27:48,924 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 686 flow [2024-06-04 15:27:48,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:48,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:48,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:48,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:27:48,925 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 15:27:48,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:48,925 INFO L85 PathProgramCache]: Analyzing trace with hash -763750153, now seen corresponding path program 5 times [2024-06-04 15:27:48,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:48,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388915987] [2024-06-04 15:27:48,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:48,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:49,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:49,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:49,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388915987] [2024-06-04 15:27:49,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388915987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:49,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:49,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:27:49,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379305093] [2024-06-04 15:27:49,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:49,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:27:49,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:49,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:27:49,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:27:49,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:49,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 686 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:49,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:49,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:49,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:49,853 INFO L124 PetriNetUnfolderBase]: 261/467 cut-off events. [2024-06-04 15:27:49,853 INFO L125 PetriNetUnfolderBase]: For 8586/8586 co-relation queries the response was YES. [2024-06-04 15:27:49,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 467 events. 261/467 cut-off events. For 8586/8586 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1813 event pairs, 37 based on Foata normal form. 3/470 useless extension candidates. Maximal degree in co-relation 2348. Up to 325 conditions per place. [2024-06-04 15:27:49,856 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 69 selfloop transitions, 40 changer transitions 0/111 dead transitions. [2024-06-04 15:27:49,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 111 transitions, 995 flow [2024-06-04 15:27:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:27:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:27:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-04 15:27:49,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-04 15:27:49,857 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 686 flow. Second operand 8 states and 108 transitions. [2024-06-04 15:27:49,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 111 transitions, 995 flow [2024-06-04 15:27:49,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 111 transitions, 948 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-04 15:27:49,868 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 779 flow [2024-06-04 15:27:49,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=779, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2024-06-04 15:27:49,868 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-04 15:27:49,868 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 779 flow [2024-06-04 15:27:49,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:49,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:49,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:49,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:27:49,869 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 15:27:49,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:49,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1567006813, now seen corresponding path program 6 times [2024-06-04 15:27:49,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:49,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717514016] [2024-06-04 15:27:49,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:49,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:50,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:50,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717514016] [2024-06-04 15:27:50,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717514016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:50,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:50,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:27:50,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283282823] [2024-06-04 15:27:50,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:50,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:27:50,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:50,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:27:50,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:27:50,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:50,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 779 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:50,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:50,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:50,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:50,988 INFO L124 PetriNetUnfolderBase]: 264/472 cut-off events. [2024-06-04 15:27:50,989 INFO L125 PetriNetUnfolderBase]: For 8593/8593 co-relation queries the response was YES. [2024-06-04 15:27:50,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 472 events. 264/472 cut-off events. For 8593/8593 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1833 event pairs, 47 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 2480. Up to 398 conditions per place. [2024-06-04 15:27:50,998 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 82 selfloop transitions, 24 changer transitions 0/108 dead transitions. [2024-06-04 15:27:50,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 108 transitions, 1056 flow [2024-06-04 15:27:50,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:27:50,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:27:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-04 15:27:50,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-04 15:27:50,999 INFO L175 Difference]: Start difference. First operand has 98 places, 92 transitions, 779 flow. Second operand 9 states and 106 transitions. [2024-06-04 15:27:50,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 108 transitions, 1056 flow [2024-06-04 15:27:51,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 108 transitions, 958 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 15:27:51,013 INFO L231 Difference]: Finished difference. Result has 101 places, 96 transitions, 775 flow [2024-06-04 15:27:51,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=775, PETRI_PLACES=101, PETRI_TRANSITIONS=96} [2024-06-04 15:27:51,018 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-04 15:27:51,018 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 96 transitions, 775 flow [2024-06-04 15:27:51,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:51,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:51,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:51,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:27:51,019 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 15:27:51,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:51,019 INFO L85 PathProgramCache]: Analyzing trace with hash 437340775, now seen corresponding path program 1 times [2024-06-04 15:27:51,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:51,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042319821] [2024-06-04 15:27:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:51,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:51,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:51,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042319821] [2024-06-04 15:27:51,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042319821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:51,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:51,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:27:51,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940672979] [2024-06-04 15:27:51,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:51,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:27:51,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:51,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:27:51,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:27:51,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:51,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 96 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:51,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:51,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:51,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:51,853 INFO L124 PetriNetUnfolderBase]: 260/466 cut-off events. [2024-06-04 15:27:51,853 INFO L125 PetriNetUnfolderBase]: For 8693/8693 co-relation queries the response was YES. [2024-06-04 15:27:51,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2419 conditions, 466 events. 260/466 cut-off events. For 8693/8693 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1802 event pairs, 40 based on Foata normal form. 2/468 useless extension candidates. Maximal degree in co-relation 2369. Up to 429 conditions per place. [2024-06-04 15:27:51,856 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 94 selfloop transitions, 14 changer transitions 0/110 dead transitions. [2024-06-04 15:27:51,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 110 transitions, 1033 flow [2024-06-04 15:27:51,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:27:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:27:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 15:27:51,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-04 15:27:51,857 INFO L175 Difference]: Start difference. First operand has 101 places, 96 transitions, 775 flow. Second operand 9 states and 99 transitions. [2024-06-04 15:27:51,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 110 transitions, 1033 flow [2024-06-04 15:27:51,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 110 transitions, 991 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-04 15:27:51,871 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 786 flow [2024-06-04 15:27:51,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=786, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2024-06-04 15:27:51,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-04 15:27:51,872 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 786 flow [2024-06-04 15:27:51,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:51,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:51,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:51,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 15:27:51,873 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 15:27:51,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:51,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1347712171, now seen corresponding path program 7 times [2024-06-04 15:27:51,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:51,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300472123] [2024-06-04 15:27:51,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:51,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:52,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:52,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:52,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300472123] [2024-06-04 15:27:52,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300472123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:52,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:52,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:27:52,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620327789] [2024-06-04 15:27:52,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:52,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:27:52,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:52,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:27:52,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:27:52,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:52,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 786 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:52,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:52,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:52,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:52,794 INFO L124 PetriNetUnfolderBase]: 269/481 cut-off events. [2024-06-04 15:27:52,794 INFO L125 PetriNetUnfolderBase]: For 9727/9727 co-relation queries the response was YES. [2024-06-04 15:27:52,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2516 conditions, 481 events. 269/481 cut-off events. For 9727/9727 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1885 event pairs, 42 based on Foata normal form. 3/484 useless extension candidates. Maximal degree in co-relation 2465. Up to 433 conditions per place. [2024-06-04 15:27:52,797 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 96 selfloop transitions, 18 changer transitions 0/116 dead transitions. [2024-06-04 15:27:52,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 1107 flow [2024-06-04 15:27:52,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:27:52,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:27:52,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 15:27:52,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-04 15:27:52,799 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 786 flow. Second operand 9 states and 102 transitions. [2024-06-04 15:27:52,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 1107 flow [2024-06-04 15:27:52,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 116 transitions, 1070 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 15:27:52,813 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 855 flow [2024-06-04 15:27:52,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=855, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2024-06-04 15:27:52,813 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-04 15:27:52,813 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 855 flow [2024-06-04 15:27:52,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:52,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:52,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:52,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 15:27:52,814 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 15:27:52,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:52,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1127684231, now seen corresponding path program 8 times [2024-06-04 15:27:52,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:52,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792760779] [2024-06-04 15:27:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:52,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:53,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:53,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792760779] [2024-06-04 15:27:53,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792760779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:53,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:53,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:27:53,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993685487] [2024-06-04 15:27:53,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:53,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:27:53,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:53,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:27:53,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:27:53,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:53,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 855 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:53,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:53,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:53,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:53,929 INFO L124 PetriNetUnfolderBase]: 273/488 cut-off events. [2024-06-04 15:27:53,929 INFO L125 PetriNetUnfolderBase]: For 10025/10025 co-relation queries the response was YES. [2024-06-04 15:27:53,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 488 events. 273/488 cut-off events. For 10025/10025 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1928 event pairs, 42 based on Foata normal form. 3/491 useless extension candidates. Maximal degree in co-relation 2523. Up to 428 conditions per place. [2024-06-04 15:27:53,932 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 95 selfloop transitions, 22 changer transitions 0/119 dead transitions. [2024-06-04 15:27:53,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 119 transitions, 1158 flow [2024-06-04 15:27:53,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:27:53,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:27:53,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-04 15:27:53,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-04 15:27:53,933 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 855 flow. Second operand 9 states and 106 transitions. [2024-06-04 15:27:53,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 119 transitions, 1158 flow [2024-06-04 15:27:53,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 119 transitions, 1082 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 15:27:53,947 INFO L231 Difference]: Finished difference. Result has 110 places, 104 transitions, 863 flow [2024-06-04 15:27:53,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=863, PETRI_PLACES=110, PETRI_TRANSITIONS=104} [2024-06-04 15:27:53,948 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-04 15:27:53,948 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 104 transitions, 863 flow [2024-06-04 15:27:53,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:53,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:53,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:53,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 15:27:53,949 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 15:27:53,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:53,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1191399647, now seen corresponding path program 1 times [2024-06-04 15:27:53,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:53,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014131670] [2024-06-04 15:27:53,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:53,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:54,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:54,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014131670] [2024-06-04 15:27:54,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014131670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:54,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:54,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:27:54,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7051669] [2024-06-04 15:27:54,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:54,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:27:54,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:54,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:27:54,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:27:54,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:54,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 104 transitions, 863 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:54,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:54,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:54,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:54,947 INFO L124 PetriNetUnfolderBase]: 330/597 cut-off events. [2024-06-04 15:27:54,948 INFO L125 PetriNetUnfolderBase]: For 17712/17712 co-relation queries the response was YES. [2024-06-04 15:27:54,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3499 conditions, 597 events. 330/597 cut-off events. For 17712/17712 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2518 event pairs, 41 based on Foata normal form. 2/599 useless extension candidates. Maximal degree in co-relation 3446. Up to 197 conditions per place. [2024-06-04 15:27:54,951 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 58 changer transitions 0/135 dead transitions. [2024-06-04 15:27:54,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 135 transitions, 1395 flow [2024-06-04 15:27:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:27:54,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:27:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-04 15:27:54,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-04 15:27:54,953 INFO L175 Difference]: Start difference. First operand has 110 places, 104 transitions, 863 flow. Second operand 9 states and 120 transitions. [2024-06-04 15:27:54,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 135 transitions, 1395 flow [2024-06-04 15:27:54,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 135 transitions, 1308 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:54,975 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 977 flow [2024-06-04 15:27:54,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=977, PETRI_PLACES=112, PETRI_TRANSITIONS=107} [2024-06-04 15:27:54,975 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-04 15:27:54,975 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 977 flow [2024-06-04 15:27:54,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:54,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:54,976 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 15:27:54,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 15:27:54,976 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 15:27:54,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1189525697, now seen corresponding path program 2 times [2024-06-04 15:27:54,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:54,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978183883] [2024-06-04 15:27:54,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:54,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:55,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:55,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978183883] [2024-06-04 15:27:55,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978183883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:55,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:55,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:27:55,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689071187] [2024-06-04 15:27:55,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:55,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:27:55,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:55,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:27:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:27:55,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:55,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 107 transitions, 977 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:55,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:55,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:55,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:55,970 INFO L124 PetriNetUnfolderBase]: 384/703 cut-off events. [2024-06-04 15:27:55,970 INFO L125 PetriNetUnfolderBase]: For 26942/26942 co-relation queries the response was YES. [2024-06-04 15:27:55,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4577 conditions, 703 events. 384/703 cut-off events. For 26942/26942 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3168 event pairs, 75 based on Foata normal form. 2/705 useless extension candidates. Maximal degree in co-relation 4523. Up to 369 conditions per place. [2024-06-04 15:27:55,975 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 73 selfloop transitions, 64 changer transitions 0/139 dead transitions. [2024-06-04 15:27:55,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 139 transitions, 1505 flow [2024-06-04 15:27:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:55,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-04 15:27:55,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-04 15:27:55,976 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 977 flow. Second operand 10 states and 138 transitions. [2024-06-04 15:27:55,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 139 transitions, 1505 flow [2024-06-04 15:27:56,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 139 transitions, 1456 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 15:27:56,002 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 1101 flow [2024-06-04 15:27:56,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1101, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2024-06-04 15:27:56,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-04 15:27:56,004 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 1101 flow [2024-06-04 15:27:56,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:56,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:56,004 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 15:27:56,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 15:27:56,004 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 15:27:56,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:56,005 INFO L85 PathProgramCache]: Analyzing trace with hash -703827401, now seen corresponding path program 3 times [2024-06-04 15:27:56,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:56,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340966781] [2024-06-04 15:27:56,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:56,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:56,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:56,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340966781] [2024-06-04 15:27:56,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340966781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:56,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:56,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:27:56,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120897903] [2024-06-04 15:27:56,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:56,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:27:56,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:56,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:27:56,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:27:56,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:56,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 1101 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:56,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:56,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:56,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:57,124 INFO L124 PetriNetUnfolderBase]: 518/943 cut-off events. [2024-06-04 15:27:57,124 INFO L125 PetriNetUnfolderBase]: For 38703/38703 co-relation queries the response was YES. [2024-06-04 15:27:57,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 943 events. 518/943 cut-off events. For 38703/38703 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4606 event pairs, 190 based on Foata normal form. 16/959 useless extension candidates. Maximal degree in co-relation 6051. Up to 668 conditions per place. [2024-06-04 15:27:57,131 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 110 selfloop transitions, 64 changer transitions 8/184 dead transitions. [2024-06-04 15:27:57,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 184 transitions, 2201 flow [2024-06-04 15:27:57,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:27:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:27:57,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-04 15:27:57,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-04 15:27:57,132 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 1101 flow. Second operand 12 states and 147 transitions. [2024-06-04 15:27:57,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 184 transitions, 2201 flow [2024-06-04 15:27:57,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 184 transitions, 2035 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 15:27:57,163 INFO L231 Difference]: Finished difference. Result has 131 places, 152 transitions, 1745 flow [2024-06-04 15:27:57,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1745, PETRI_PLACES=131, PETRI_TRANSITIONS=152} [2024-06-04 15:27:57,164 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-04 15:27:57,164 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 152 transitions, 1745 flow [2024-06-04 15:27:57,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:57,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:57,164 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 15:27:57,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 15:27:57,165 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 15:27:57,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:57,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1679335297, now seen corresponding path program 4 times [2024-06-04 15:27:57,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:57,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484838685] [2024-06-04 15:27:57,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:57,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:58,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:58,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484838685] [2024-06-04 15:27:58,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484838685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:58,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:58,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:27:58,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932411944] [2024-06-04 15:27:58,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:58,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:27:58,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:58,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:27:58,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:27:58,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:58,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 152 transitions, 1745 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:58,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:58,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:58,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:58,555 INFO L124 PetriNetUnfolderBase]: 495/905 cut-off events. [2024-06-04 15:27:58,555 INFO L125 PetriNetUnfolderBase]: For 33166/33166 co-relation queries the response was YES. [2024-06-04 15:27:58,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5869 conditions, 905 events. 495/905 cut-off events. For 33166/33166 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4371 event pairs, 94 based on Foata normal form. 16/921 useless extension candidates. Maximal degree in co-relation 5804. Up to 648 conditions per place. [2024-06-04 15:27:58,561 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 123 selfloop transitions, 60 changer transitions 8/193 dead transitions. [2024-06-04 15:27:58,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 193 transitions, 2430 flow [2024-06-04 15:27:58,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:27:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:27:58,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-04 15:27:58,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-04 15:27:58,562 INFO L175 Difference]: Start difference. First operand has 131 places, 152 transitions, 1745 flow. Second operand 12 states and 155 transitions. [2024-06-04 15:27:58,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 193 transitions, 2430 flow [2024-06-04 15:27:58,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 193 transitions, 2383 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-04 15:27:58,603 INFO L231 Difference]: Finished difference. Result has 145 places, 161 transitions, 1973 flow [2024-06-04 15:27:58,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1973, PETRI_PLACES=145, PETRI_TRANSITIONS=161} [2024-06-04 15:27:58,603 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-04 15:27:58,603 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 161 transitions, 1973 flow [2024-06-04 15:27:58,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:58,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:58,604 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 15:27:58,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 15:27:58,604 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 15:27:58,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:58,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2126277936, now seen corresponding path program 1 times [2024-06-04 15:27:58,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:58,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107879272] [2024-06-04 15:27:58,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:58,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:59,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:59,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107879272] [2024-06-04 15:27:59,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107879272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:59,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:59,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:27:59,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016017725] [2024-06-04 15:27:59,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:59,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:27:59,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:59,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:27:59,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:27:59,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:27:59,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 161 transitions, 1973 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:59,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:59,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:27:59,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:59,660 INFO L124 PetriNetUnfolderBase]: 493/901 cut-off events. [2024-06-04 15:27:59,661 INFO L125 PetriNetUnfolderBase]: For 28432/28432 co-relation queries the response was YES. [2024-06-04 15:27:59,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6170 conditions, 901 events. 493/901 cut-off events. For 28432/28432 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4388 event pairs, 84 based on Foata normal form. 2/903 useless extension candidates. Maximal degree in co-relation 6099. Up to 615 conditions per place. [2024-06-04 15:27:59,667 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 124 selfloop transitions, 61 changer transitions 0/187 dead transitions. [2024-06-04 15:27:59,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 187 transitions, 2554 flow [2024-06-04 15:27:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:59,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 15:27:59,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-04 15:27:59,668 INFO L175 Difference]: Start difference. First operand has 145 places, 161 transitions, 1973 flow. Second operand 10 states and 130 transitions. [2024-06-04 15:27:59,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 187 transitions, 2554 flow [2024-06-04 15:27:59,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 187 transitions, 2296 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:59,714 INFO L231 Difference]: Finished difference. Result has 146 places, 165 transitions, 1918 flow [2024-06-04 15:27:59,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1918, PETRI_PLACES=146, PETRI_TRANSITIONS=165} [2024-06-04 15:27:59,714 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-04 15:27:59,714 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 165 transitions, 1918 flow [2024-06-04 15:27:59,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:59,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:59,715 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 15:27:59,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 15:27:59,715 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 15:27:59,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:59,715 INFO L85 PathProgramCache]: Analyzing trace with hash 881459718, now seen corresponding path program 2 times [2024-06-04 15:27:59,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:59,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171176558] [2024-06-04 15:27:59,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:59,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:00,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:00,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171176558] [2024-06-04 15:28:00,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171176558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:00,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:00,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:00,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416674485] [2024-06-04 15:28:00,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:00,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:00,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:00,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:00,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:00,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:00,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 165 transitions, 1918 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:00,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:00,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:00,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:00,907 INFO L124 PetriNetUnfolderBase]: 499/911 cut-off events. [2024-06-04 15:28:00,908 INFO L125 PetriNetUnfolderBase]: For 30021/30021 co-relation queries the response was YES. [2024-06-04 15:28:00,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6154 conditions, 911 events. 499/911 cut-off events. For 30021/30021 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4445 event pairs, 86 based on Foata normal form. 2/913 useless extension candidates. Maximal degree in co-relation 6084. Up to 690 conditions per place. [2024-06-04 15:28:00,914 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 133 selfloop transitions, 51 changer transitions 0/186 dead transitions. [2024-06-04 15:28:00,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 186 transitions, 2382 flow [2024-06-04 15:28:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:00,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:00,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-04 15:28:00,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-04 15:28:00,929 INFO L175 Difference]: Start difference. First operand has 146 places, 165 transitions, 1918 flow. Second operand 10 states and 128 transitions. [2024-06-04 15:28:00,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 186 transitions, 2382 flow [2024-06-04 15:28:00,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 186 transitions, 2298 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:00,995 INFO L231 Difference]: Finished difference. Result has 152 places, 167 transitions, 1985 flow [2024-06-04 15:28:00,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1985, PETRI_PLACES=152, PETRI_TRANSITIONS=167} [2024-06-04 15:28:00,997 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-04 15:28:00,997 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 167 transitions, 1985 flow [2024-06-04 15:28:00,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:00,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:00,997 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 15:28:00,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 15:28:00,998 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 15:28:00,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:00,999 INFO L85 PathProgramCache]: Analyzing trace with hash 493436748, now seen corresponding path program 3 times [2024-06-04 15:28:00,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:00,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234355364] [2024-06-04 15:28:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:00,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:01,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:01,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234355364] [2024-06-04 15:28:01,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234355364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:01,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:01,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:01,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493051707] [2024-06-04 15:28:01,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:01,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:01,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:01,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:01,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:01,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:01,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 167 transitions, 1985 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:01,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:01,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:01,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:02,241 INFO L124 PetriNetUnfolderBase]: 505/921 cut-off events. [2024-06-04 15:28:02,242 INFO L125 PetriNetUnfolderBase]: For 32151/32151 co-relation queries the response was YES. [2024-06-04 15:28:02,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6352 conditions, 921 events. 505/921 cut-off events. For 32151/32151 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4527 event pairs, 96 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 6280. Up to 710 conditions per place. [2024-06-04 15:28:02,249 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 135 selfloop transitions, 51 changer transitions 0/188 dead transitions. [2024-06-04 15:28:02,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 188 transitions, 2455 flow [2024-06-04 15:28:02,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-04 15:28:02,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-04 15:28:02,259 INFO L175 Difference]: Start difference. First operand has 152 places, 167 transitions, 1985 flow. Second operand 10 states and 129 transitions. [2024-06-04 15:28:02,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 188 transitions, 2455 flow [2024-06-04 15:28:02,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 188 transitions, 2329 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:02,310 INFO L231 Difference]: Finished difference. Result has 155 places, 169 transitions, 2012 flow [2024-06-04 15:28:02,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1859, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2012, PETRI_PLACES=155, PETRI_TRANSITIONS=169} [2024-06-04 15:28:02,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-04 15:28:02,311 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 169 transitions, 2012 flow [2024-06-04 15:28:02,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:02,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:02,311 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 15:28:02,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 15:28:02,311 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 15:28:02,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:02,312 INFO L85 PathProgramCache]: Analyzing trace with hash 311466418, now seen corresponding path program 4 times [2024-06-04 15:28:02,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:02,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962870172] [2024-06-04 15:28:02,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:02,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:02,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:02,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962870172] [2024-06-04 15:28:02,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962870172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:02,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:02,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:02,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950217550] [2024-06-04 15:28:02,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:02,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:02,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:02,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:02,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:03,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:03,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 169 transitions, 2012 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:03,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:03,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:03,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:03,423 INFO L124 PetriNetUnfolderBase]: 511/931 cut-off events. [2024-06-04 15:28:03,423 INFO L125 PetriNetUnfolderBase]: For 33329/33329 co-relation queries the response was YES. [2024-06-04 15:28:03,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6436 conditions, 931 events. 511/931 cut-off events. For 33329/33329 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4549 event pairs, 90 based on Foata normal form. 2/933 useless extension candidates. Maximal degree in co-relation 6363. Up to 519 conditions per place. [2024-06-04 15:28:03,430 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 100 selfloop transitions, 92 changer transitions 0/194 dead transitions. [2024-06-04 15:28:03,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 194 transitions, 2619 flow [2024-06-04 15:28:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 15:28:03,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-04 15:28:03,437 INFO L175 Difference]: Start difference. First operand has 155 places, 169 transitions, 2012 flow. Second operand 10 states and 127 transitions. [2024-06-04 15:28:03,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 194 transitions, 2619 flow [2024-06-04 15:28:03,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 194 transitions, 2483 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:03,489 INFO L231 Difference]: Finished difference. Result has 159 places, 175 transitions, 2236 flow [2024-06-04 15:28:03,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2236, PETRI_PLACES=159, PETRI_TRANSITIONS=175} [2024-06-04 15:28:03,490 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2024-06-04 15:28:03,490 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 175 transitions, 2236 flow [2024-06-04 15:28:03,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:03,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:03,490 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 15:28:03,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 15:28:03,491 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 15:28:03,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash 298954043, now seen corresponding path program 5 times [2024-06-04 15:28:03,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:03,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951093938] [2024-06-04 15:28:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:03,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:03,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:03,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951093938] [2024-06-04 15:28:03,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951093938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:03,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:03,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:03,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134930522] [2024-06-04 15:28:03,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:03,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:03,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:03,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:03,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:04,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:04,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 175 transitions, 2236 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:04,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:04,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:04,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:04,375 INFO L124 PetriNetUnfolderBase]: 508/926 cut-off events. [2024-06-04 15:28:04,375 INFO L125 PetriNetUnfolderBase]: For 34131/34131 co-relation queries the response was YES. [2024-06-04 15:28:04,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6617 conditions, 926 events. 508/926 cut-off events. For 34131/34131 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4521 event pairs, 105 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 6542. Up to 726 conditions per place. [2024-06-04 15:28:04,381 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 121 selfloop transitions, 67 changer transitions 0/190 dead transitions. [2024-06-04 15:28:04,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 190 transitions, 2665 flow [2024-06-04 15:28:04,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 15:28:04,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-04 15:28:04,382 INFO L175 Difference]: Start difference. First operand has 159 places, 175 transitions, 2236 flow. Second operand 9 states and 114 transitions. [2024-06-04 15:28:04,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 190 transitions, 2665 flow [2024-06-04 15:28:04,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 190 transitions, 2515 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:04,436 INFO L231 Difference]: Finished difference. Result has 161 places, 175 transitions, 2228 flow [2024-06-04 15:28:04,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2228, PETRI_PLACES=161, PETRI_TRANSITIONS=175} [2024-06-04 15:28:04,436 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-04 15:28:04,436 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 175 transitions, 2228 flow [2024-06-04 15:28:04,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:04,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:04,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:04,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 15:28:04,437 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 15:28:04,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:04,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1427617103, now seen corresponding path program 6 times [2024-06-04 15:28:04,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:04,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276844543] [2024-06-04 15:28:04,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:04,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:05,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:05,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276844543] [2024-06-04 15:28:05,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276844543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:05,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:05,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:05,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748756518] [2024-06-04 15:28:05,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:05,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:05,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:05,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:05,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:05,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:05,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 175 transitions, 2228 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:05,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:05,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:05,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:05,450 INFO L124 PetriNetUnfolderBase]: 536/980 cut-off events. [2024-06-04 15:28:05,451 INFO L125 PetriNetUnfolderBase]: For 36423/36423 co-relation queries the response was YES. [2024-06-04 15:28:05,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6919 conditions, 980 events. 536/980 cut-off events. For 36423/36423 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4883 event pairs, 101 based on Foata normal form. 2/982 useless extension candidates. Maximal degree in co-relation 6846. Up to 820 conditions per place. [2024-06-04 15:28:05,456 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 157 selfloop transitions, 45 changer transitions 0/204 dead transitions. [2024-06-04 15:28:05,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 204 transitions, 2874 flow [2024-06-04 15:28:05,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:05,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 15:28:05,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-04 15:28:05,459 INFO L175 Difference]: Start difference. First operand has 161 places, 175 transitions, 2228 flow. Second operand 10 states and 127 transitions. [2024-06-04 15:28:05,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 204 transitions, 2874 flow [2024-06-04 15:28:05,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 204 transitions, 2751 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:05,517 INFO L231 Difference]: Finished difference. Result has 169 places, 184 transitions, 2350 flow [2024-06-04 15:28:05,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2350, PETRI_PLACES=169, PETRI_TRANSITIONS=184} [2024-06-04 15:28:05,517 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-04 15:28:05,518 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 184 transitions, 2350 flow [2024-06-04 15:28:05,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:05,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:05,518 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 15:28:05,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 15:28:05,518 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 15:28:05,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:05,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1169332853, now seen corresponding path program 7 times [2024-06-04 15:28:05,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:05,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161830434] [2024-06-04 15:28:05,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:05,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:06,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:06,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161830434] [2024-06-04 15:28:06,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161830434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:06,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:06,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:06,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000839325] [2024-06-04 15:28:06,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:06,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:06,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:06,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:06,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:06,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:06,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 184 transitions, 2350 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:06,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:06,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:06,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:06,541 INFO L124 PetriNetUnfolderBase]: 540/988 cut-off events. [2024-06-04 15:28:06,541 INFO L125 PetriNetUnfolderBase]: For 38307/38307 co-relation queries the response was YES. [2024-06-04 15:28:06,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6990 conditions, 988 events. 540/988 cut-off events. For 38307/38307 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4932 event pairs, 107 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 6913. Up to 859 conditions per place. [2024-06-04 15:28:06,547 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 157 selfloop transitions, 43 changer transitions 0/202 dead transitions. [2024-06-04 15:28:06,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 202 transitions, 2813 flow [2024-06-04 15:28:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:28:06,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-04 15:28:06,548 INFO L175 Difference]: Start difference. First operand has 169 places, 184 transitions, 2350 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:28:06,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 202 transitions, 2813 flow [2024-06-04 15:28:06,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 202 transitions, 2776 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-04 15:28:06,613 INFO L231 Difference]: Finished difference. Result has 177 places, 186 transitions, 2434 flow [2024-06-04 15:28:06,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2317, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2434, PETRI_PLACES=177, PETRI_TRANSITIONS=186} [2024-06-04 15:28:06,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-04 15:28:06,614 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 186 transitions, 2434 flow [2024-06-04 15:28:06,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:06,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:06,614 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 15:28:06,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 15:28:06,615 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 15:28:06,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:06,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1169333008, now seen corresponding path program 5 times [2024-06-04 15:28:06,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:06,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661178117] [2024-06-04 15:28:06,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:06,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:07,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:07,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661178117] [2024-06-04 15:28:07,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661178117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:07,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:07,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:07,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079258869] [2024-06-04 15:28:07,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:07,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:07,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:07,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:07,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:07,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:07,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 186 transitions, 2434 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:07,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:07,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:07,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:07,639 INFO L124 PetriNetUnfolderBase]: 546/998 cut-off events. [2024-06-04 15:28:07,639 INFO L125 PetriNetUnfolderBase]: For 40513/40513 co-relation queries the response was YES. [2024-06-04 15:28:07,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7225 conditions, 998 events. 546/998 cut-off events. For 40513/40513 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4987 event pairs, 86 based on Foata normal form. 2/1000 useless extension candidates. Maximal degree in co-relation 7145. Up to 729 conditions per place. [2024-06-04 15:28:07,645 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 146 selfloop transitions, 62 changer transitions 0/210 dead transitions. [2024-06-04 15:28:07,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 210 transitions, 3044 flow [2024-06-04 15:28:07,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:07,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:07,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-04 15:28:07,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-04 15:28:07,646 INFO L175 Difference]: Start difference. First operand has 177 places, 186 transitions, 2434 flow. Second operand 10 states and 135 transitions. [2024-06-04 15:28:07,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 210 transitions, 3044 flow [2024-06-04 15:28:07,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 210 transitions, 2962 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:07,711 INFO L231 Difference]: Finished difference. Result has 180 places, 188 transitions, 2533 flow [2024-06-04 15:28:07,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2352, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2533, PETRI_PLACES=180, PETRI_TRANSITIONS=188} [2024-06-04 15:28:07,711 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-04 15:28:07,711 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 188 transitions, 2533 flow [2024-06-04 15:28:07,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:07,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:07,711 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 15:28:07,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 15:28:07,712 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 15:28:07,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:07,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1174839383, now seen corresponding path program 8 times [2024-06-04 15:28:07,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:07,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407782223] [2024-06-04 15:28:07,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:07,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:08,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:08,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407782223] [2024-06-04 15:28:08,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407782223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:08,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:08,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:08,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134237306] [2024-06-04 15:28:08,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:08,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:08,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:08,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:08,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:08,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:08,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 188 transitions, 2533 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:08,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:08,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:08,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:08,993 INFO L124 PetriNetUnfolderBase]: 566/1045 cut-off events. [2024-06-04 15:28:08,993 INFO L125 PetriNetUnfolderBase]: For 53812/53812 co-relation queries the response was YES. [2024-06-04 15:28:08,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7389 conditions, 1045 events. 566/1045 cut-off events. For 53812/53812 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5342 event pairs, 107 based on Foata normal form. 16/1061 useless extension candidates. Maximal degree in co-relation 7308. Up to 841 conditions per place. [2024-06-04 15:28:09,000 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 38 changer transitions 13/213 dead transitions. [2024-06-04 15:28:09,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 213 transitions, 3057 flow [2024-06-04 15:28:09,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:09,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:28:09,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-04 15:28:09,002 INFO L175 Difference]: Start difference. First operand has 180 places, 188 transitions, 2533 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:28:09,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 213 transitions, 3057 flow [2024-06-04 15:28:09,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 213 transitions, 2878 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:09,078 INFO L231 Difference]: Finished difference. Result has 185 places, 183 transitions, 2374 flow [2024-06-04 15:28:09,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2354, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2374, PETRI_PLACES=185, PETRI_TRANSITIONS=183} [2024-06-04 15:28:09,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-04 15:28:09,078 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 183 transitions, 2374 flow [2024-06-04 15:28:09,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:09,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:09,079 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 15:28:09,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 15:28:09,079 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 15:28:09,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:09,079 INFO L85 PathProgramCache]: Analyzing trace with hash -493553904, now seen corresponding path program 6 times [2024-06-04 15:28:09,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:09,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655079953] [2024-06-04 15:28:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:09,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:09,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:09,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655079953] [2024-06-04 15:28:09,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655079953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:09,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:09,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:09,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024638018] [2024-06-04 15:28:09,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:09,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:09,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:09,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:09,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:09,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:09,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 183 transitions, 2374 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:09,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:09,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:09,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:10,273 INFO L124 PetriNetUnfolderBase]: 534/985 cut-off events. [2024-06-04 15:28:10,273 INFO L125 PetriNetUnfolderBase]: For 44678/44678 co-relation queries the response was YES. [2024-06-04 15:28:10,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7106 conditions, 985 events. 534/985 cut-off events. For 44678/44678 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4943 event pairs, 90 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 7023. Up to 769 conditions per place. [2024-06-04 15:28:10,279 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 50 changer transitions 0/204 dead transitions. [2024-06-04 15:28:10,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 204 transitions, 2878 flow [2024-06-04 15:28:10,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 15:28:10,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-04 15:28:10,280 INFO L175 Difference]: Start difference. First operand has 185 places, 183 transitions, 2374 flow. Second operand 11 states and 136 transitions. [2024-06-04 15:28:10,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 204 transitions, 2878 flow [2024-06-04 15:28:10,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 204 transitions, 2800 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:10,355 INFO L231 Difference]: Finished difference. Result has 188 places, 185 transitions, 2457 flow [2024-06-04 15:28:10,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2457, PETRI_PLACES=188, PETRI_TRANSITIONS=185} [2024-06-04 15:28:10,355 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-04 15:28:10,355 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 185 transitions, 2457 flow [2024-06-04 15:28:10,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:10,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:10,356 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 15:28:10,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 15:28:10,358 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 15:28:10,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:10,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1418827828, now seen corresponding path program 7 times [2024-06-04 15:28:10,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:10,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202991617] [2024-06-04 15:28:10,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:10,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:11,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:11,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202991617] [2024-06-04 15:28:11,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202991617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:11,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:11,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:11,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174851213] [2024-06-04 15:28:11,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:11,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:11,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:11,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:11,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:11,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:11,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 185 transitions, 2457 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:11,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:11,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:11,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:11,649 INFO L124 PetriNetUnfolderBase]: 530/978 cut-off events. [2024-06-04 15:28:11,650 INFO L125 PetriNetUnfolderBase]: For 42810/42810 co-relation queries the response was YES. [2024-06-04 15:28:11,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7004 conditions, 978 events. 530/978 cut-off events. For 42810/42810 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4925 event pairs, 90 based on Foata normal form. 2/980 useless extension candidates. Maximal degree in co-relation 6921. Up to 777 conditions per place. [2024-06-04 15:28:11,655 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 155 selfloop transitions, 48 changer transitions 0/205 dead transitions. [2024-06-04 15:28:11,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 205 transitions, 2915 flow [2024-06-04 15:28:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:11,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 15:28:11,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-04 15:28:11,663 INFO L175 Difference]: Start difference. First operand has 188 places, 185 transitions, 2457 flow. Second operand 11 states and 136 transitions. [2024-06-04 15:28:11,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 205 transitions, 2915 flow [2024-06-04 15:28:11,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 205 transitions, 2764 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:11,735 INFO L231 Difference]: Finished difference. Result has 192 places, 186 transitions, 2422 flow [2024-06-04 15:28:11,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2306, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2422, PETRI_PLACES=192, PETRI_TRANSITIONS=186} [2024-06-04 15:28:11,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-04 15:28:11,736 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 186 transitions, 2422 flow [2024-06-04 15:28:11,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:11,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:11,736 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 15:28:11,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 15:28:11,736 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 15:28:11,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:11,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1169477003, now seen corresponding path program 9 times [2024-06-04 15:28:11,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:11,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880060810] [2024-06-04 15:28:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:11,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:12,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:12,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:12,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880060810] [2024-06-04 15:28:12,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880060810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:12,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:12,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:12,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025731642] [2024-06-04 15:28:12,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:12,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:12,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:12,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:12,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:12,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:12,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 186 transitions, 2422 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:12,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:12,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:12,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:12,815 INFO L124 PetriNetUnfolderBase]: 547/1017 cut-off events. [2024-06-04 15:28:12,815 INFO L125 PetriNetUnfolderBase]: For 53771/53771 co-relation queries the response was YES. [2024-06-04 15:28:12,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7018 conditions, 1017 events. 547/1017 cut-off events. For 53771/53771 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5206 event pairs, 109 based on Foata normal form. 14/1031 useless extension candidates. Maximal degree in co-relation 6933. Up to 824 conditions per place. [2024-06-04 15:28:12,822 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 159 selfloop transitions, 35 changer transitions 12/208 dead transitions. [2024-06-04 15:28:12,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 208 transitions, 2922 flow [2024-06-04 15:28:12,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 15:28:12,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-04 15:28:12,823 INFO L175 Difference]: Start difference. First operand has 192 places, 186 transitions, 2422 flow. Second operand 10 states and 130 transitions. [2024-06-04 15:28:12,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 208 transitions, 2922 flow [2024-06-04 15:28:12,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 208 transitions, 2798 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:12,906 INFO L231 Difference]: Finished difference. Result has 194 places, 181 transitions, 2306 flow [2024-06-04 15:28:12,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2298, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2306, PETRI_PLACES=194, PETRI_TRANSITIONS=181} [2024-06-04 15:28:12,906 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-04 15:28:12,906 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 181 transitions, 2306 flow [2024-06-04 15:28:12,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:12,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:12,907 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 15:28:12,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 15:28:12,907 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 15:28:12,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:12,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1866543528, now seen corresponding path program 8 times [2024-06-04 15:28:12,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:12,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811788250] [2024-06-04 15:28:12,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:12,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:13,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:13,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:13,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811788250] [2024-06-04 15:28:13,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811788250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:13,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:13,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:13,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532021577] [2024-06-04 15:28:13,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:13,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:13,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:13,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:13,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:13,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:13,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 181 transitions, 2306 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:13,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:13,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:13,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:13,933 INFO L124 PetriNetUnfolderBase]: 519/962 cut-off events. [2024-06-04 15:28:13,933 INFO L125 PetriNetUnfolderBase]: For 42909/42909 co-relation queries the response was YES. [2024-06-04 15:28:13,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6774 conditions, 962 events. 519/962 cut-off events. For 42909/42909 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4827 event pairs, 87 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 6688. Up to 564 conditions per place. [2024-06-04 15:28:13,939 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 100 selfloop transitions, 98 changer transitions 0/200 dead transitions. [2024-06-04 15:28:13,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 200 transitions, 2880 flow [2024-06-04 15:28:13,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:13,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-04 15:28:13,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-04 15:28:13,940 INFO L175 Difference]: Start difference. First operand has 194 places, 181 transitions, 2306 flow. Second operand 9 states and 117 transitions. [2024-06-04 15:28:13,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 200 transitions, 2880 flow [2024-06-04 15:28:14,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 200 transitions, 2796 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:14,028 INFO L231 Difference]: Finished difference. Result has 194 places, 183 transitions, 2473 flow [2024-06-04 15:28:14,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2473, PETRI_PLACES=194, PETRI_TRANSITIONS=183} [2024-06-04 15:28:14,028 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-04 15:28:14,028 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 183 transitions, 2473 flow [2024-06-04 15:28:14,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:14,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:14,029 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 15:28:14,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 15:28:14,029 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 15:28:14,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:14,029 INFO L85 PathProgramCache]: Analyzing trace with hash -616991286, now seen corresponding path program 9 times [2024-06-04 15:28:14,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:14,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479490270] [2024-06-04 15:28:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:14,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:14,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:14,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479490270] [2024-06-04 15:28:14,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479490270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:14,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:14,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:14,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374426405] [2024-06-04 15:28:14,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:14,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:14,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:14,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:14,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:14,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:14,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 183 transitions, 2473 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:14,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:14,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:14,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:15,084 INFO L124 PetriNetUnfolderBase]: 525/972 cut-off events. [2024-06-04 15:28:15,084 INFO L125 PetriNetUnfolderBase]: For 45124/45124 co-relation queries the response was YES. [2024-06-04 15:28:15,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7078 conditions, 972 events. 525/972 cut-off events. For 45124/45124 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4885 event pairs, 87 based on Foata normal form. 2/974 useless extension candidates. Maximal degree in co-relation 6991. Up to 753 conditions per place. [2024-06-04 15:28:15,091 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 140 selfloop transitions, 57 changer transitions 0/199 dead transitions. [2024-06-04 15:28:15,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 199 transitions, 2947 flow [2024-06-04 15:28:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 15:28:15,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-04 15:28:15,092 INFO L175 Difference]: Start difference. First operand has 194 places, 183 transitions, 2473 flow. Second operand 9 states and 113 transitions. [2024-06-04 15:28:15,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 199 transitions, 2947 flow [2024-06-04 15:28:15,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 199 transitions, 2780 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:15,175 INFO L231 Difference]: Finished difference. Result has 195 places, 185 transitions, 2480 flow [2024-06-04 15:28:15,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2308, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2480, PETRI_PLACES=195, PETRI_TRANSITIONS=185} [2024-06-04 15:28:15,175 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-04 15:28:15,176 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 185 transitions, 2480 flow [2024-06-04 15:28:15,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:15,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:15,176 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 15:28:15,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 15:28:15,176 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 15:28:15,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:15,176 INFO L85 PathProgramCache]: Analyzing trace with hash -617135436, now seen corresponding path program 10 times [2024-06-04 15:28:15,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:15,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465664575] [2024-06-04 15:28:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:15,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:15,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:15,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:15,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465664575] [2024-06-04 15:28:15,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465664575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:15,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:15,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:15,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730100783] [2024-06-04 15:28:15,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:15,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:15,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:15,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:15,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:16,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:16,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 185 transitions, 2480 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:16,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:16,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:16,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:16,312 INFO L124 PetriNetUnfolderBase]: 531/982 cut-off events. [2024-06-04 15:28:16,312 INFO L125 PetriNetUnfolderBase]: For 44525/44525 co-relation queries the response was YES. [2024-06-04 15:28:16,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7039 conditions, 982 events. 531/982 cut-off events. For 44525/44525 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4955 event pairs, 94 based on Foata normal form. 2/984 useless extension candidates. Maximal degree in co-relation 6953. Up to 761 conditions per place. [2024-06-04 15:28:16,319 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 138 selfloop transitions, 61 changer transitions 0/201 dead transitions. [2024-06-04 15:28:16,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 201 transitions, 2960 flow [2024-06-04 15:28:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:16,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:16,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 15:28:16,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-04 15:28:16,321 INFO L175 Difference]: Start difference. First operand has 195 places, 185 transitions, 2480 flow. Second operand 9 states and 114 transitions. [2024-06-04 15:28:16,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 201 transitions, 2960 flow [2024-06-04 15:28:16,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 201 transitions, 2817 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:16,397 INFO L231 Difference]: Finished difference. Result has 196 places, 187 transitions, 2521 flow [2024-06-04 15:28:16,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2521, PETRI_PLACES=196, PETRI_TRANSITIONS=187} [2024-06-04 15:28:16,398 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-04 15:28:16,398 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 187 transitions, 2521 flow [2024-06-04 15:28:16,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:16,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:16,398 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 15:28:16,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 15:28:16,398 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 15:28:16,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:16,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2093402023, now seen corresponding path program 10 times [2024-06-04 15:28:16,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:16,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978167201] [2024-06-04 15:28:16,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:16,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:17,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:17,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978167201] [2024-06-04 15:28:17,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978167201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:17,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:17,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:17,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182867237] [2024-06-04 15:28:17,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:17,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:17,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:17,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:17,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 187 transitions, 2521 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:17,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:17,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:17,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:17,411 INFO L124 PetriNetUnfolderBase]: 557/1037 cut-off events. [2024-06-04 15:28:17,412 INFO L125 PetriNetUnfolderBase]: For 51644/51644 co-relation queries the response was YES. [2024-06-04 15:28:17,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7569 conditions, 1037 events. 557/1037 cut-off events. For 51644/51644 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5298 event pairs, 84 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 7483. Up to 567 conditions per place. [2024-06-04 15:28:17,419 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 91 changer transitions 0/215 dead transitions. [2024-06-04 15:28:17,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 215 transitions, 3249 flow [2024-06-04 15:28:17,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:17,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-04 15:28:17,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45878136200716846 [2024-06-04 15:28:17,420 INFO L175 Difference]: Start difference. First operand has 196 places, 187 transitions, 2521 flow. Second operand 9 states and 128 transitions. [2024-06-04 15:28:17,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 215 transitions, 3249 flow [2024-06-04 15:28:17,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 215 transitions, 3080 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:17,505 INFO L231 Difference]: Finished difference. Result has 197 places, 188 transitions, 2553 flow [2024-06-04 15:28:17,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2553, PETRI_PLACES=197, PETRI_TRANSITIONS=188} [2024-06-04 15:28:17,505 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-04 15:28:17,505 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 188 transitions, 2553 flow [2024-06-04 15:28:17,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:17,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:17,506 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 15:28:17,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 15:28:17,506 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 15:28:17,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:17,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1794174552, now seen corresponding path program 11 times [2024-06-04 15:28:17,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:17,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083780526] [2024-06-04 15:28:17,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:17,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:18,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:18,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083780526] [2024-06-04 15:28:18,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083780526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:18,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:18,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:18,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249870242] [2024-06-04 15:28:18,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:18,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:18,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:18,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:18,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:18,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:18,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 188 transitions, 2553 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:18,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:18,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:18,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:18,482 INFO L124 PetriNetUnfolderBase]: 563/1047 cut-off events. [2024-06-04 15:28:18,483 INFO L125 PetriNetUnfolderBase]: For 51674/51674 co-relation queries the response was YES. [2024-06-04 15:28:18,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 1047 events. 563/1047 cut-off events. For 51674/51674 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5383 event pairs, 104 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 7626. Up to 716 conditions per place. [2024-06-04 15:28:18,489 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 117 selfloop transitions, 92 changer transitions 0/211 dead transitions. [2024-06-04 15:28:18,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 211 transitions, 3176 flow [2024-06-04 15:28:18,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-04 15:28:18,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 15:28:18,490 INFO L175 Difference]: Start difference. First operand has 197 places, 188 transitions, 2553 flow. Second operand 9 states and 124 transitions. [2024-06-04 15:28:18,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 211 transitions, 3176 flow [2024-06-04 15:28:18,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 211 transitions, 2916 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 15:28:18,574 INFO L231 Difference]: Finished difference. Result has 197 places, 190 transitions, 2541 flow [2024-06-04 15:28:18,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2541, PETRI_PLACES=197, PETRI_TRANSITIONS=190} [2024-06-04 15:28:18,574 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-04 15:28:18,574 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 190 transitions, 2541 flow [2024-06-04 15:28:18,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:18,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:18,575 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 15:28:18,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 15:28:18,575 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 15:28:18,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:18,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1338076617, now seen corresponding path program 11 times [2024-06-04 15:28:18,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:18,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710290077] [2024-06-04 15:28:18,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:18,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:19,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:19,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710290077] [2024-06-04 15:28:19,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710290077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:19,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:19,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:19,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705978032] [2024-06-04 15:28:19,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:19,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:19,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:19,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:19,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:19,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:19,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 190 transitions, 2541 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:19,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:19,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:19,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:19,777 INFO L124 PetriNetUnfolderBase]: 558/1039 cut-off events. [2024-06-04 15:28:19,778 INFO L125 PetriNetUnfolderBase]: For 54671/54671 co-relation queries the response was YES. [2024-06-04 15:28:19,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7046 conditions, 1039 events. 558/1039 cut-off events. For 54671/54671 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5336 event pairs, 161 based on Foata normal form. 14/1053 useless extension candidates. Maximal degree in co-relation 6961. Up to 794 conditions per place. [2024-06-04 15:28:19,785 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 148 selfloop transitions, 55 changer transitions 12/217 dead transitions. [2024-06-04 15:28:19,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 217 transitions, 3188 flow [2024-06-04 15:28:19,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 15:28:19,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-04 15:28:19,786 INFO L175 Difference]: Start difference. First operand has 197 places, 190 transitions, 2541 flow. Second operand 11 states and 140 transitions. [2024-06-04 15:28:19,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 217 transitions, 3188 flow [2024-06-04 15:28:19,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 217 transitions, 2941 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:19,860 INFO L231 Difference]: Finished difference. Result has 201 places, 188 transitions, 2400 flow [2024-06-04 15:28:19,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2298, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2400, PETRI_PLACES=201, PETRI_TRANSITIONS=188} [2024-06-04 15:28:19,861 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-04 15:28:19,861 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 188 transitions, 2400 flow [2024-06-04 15:28:19,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:19,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:19,861 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 15:28:19,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 15:28:19,861 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 15:28:19,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1799686662, now seen corresponding path program 12 times [2024-06-04 15:28:19,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:19,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414035586] [2024-06-04 15:28:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:19,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:20,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:20,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:20,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414035586] [2024-06-04 15:28:20,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414035586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:20,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:20,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:20,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581245144] [2024-06-04 15:28:20,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:20,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:20,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:20,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:20,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:20,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:20,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 188 transitions, 2400 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:20,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:20,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:20,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:21,101 INFO L124 PetriNetUnfolderBase]: 538/999 cut-off events. [2024-06-04 15:28:21,101 INFO L125 PetriNetUnfolderBase]: For 40746/40746 co-relation queries the response was YES. [2024-06-04 15:28:21,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6804 conditions, 999 events. 538/999 cut-off events. For 40746/40746 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5089 event pairs, 89 based on Foata normal form. 2/1001 useless extension candidates. Maximal degree in co-relation 6718. Up to 808 conditions per place. [2024-06-04 15:28:21,109 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 48 changer transitions 0/208 dead transitions. [2024-06-04 15:28:21,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 208 transitions, 2928 flow [2024-06-04 15:28:21,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:28:21,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-04 15:28:21,112 INFO L175 Difference]: Start difference. First operand has 201 places, 188 transitions, 2400 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:28:21,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 208 transitions, 2928 flow [2024-06-04 15:28:21,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 208 transitions, 2827 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:21,183 INFO L231 Difference]: Finished difference. Result has 203 places, 192 transitions, 2484 flow [2024-06-04 15:28:21,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2484, PETRI_PLACES=203, PETRI_TRANSITIONS=192} [2024-06-04 15:28:21,184 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-04 15:28:21,184 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 192 transitions, 2484 flow [2024-06-04 15:28:21,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:21,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:21,184 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 15:28:21,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 15:28:21,185 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 15:28:21,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:21,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1818057118, now seen corresponding path program 13 times [2024-06-04 15:28:21,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:21,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252357002] [2024-06-04 15:28:21,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:21,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:22,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:22,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252357002] [2024-06-04 15:28:22,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252357002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:22,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:22,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:22,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487191268] [2024-06-04 15:28:22,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:22,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:22,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:22,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:22,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:22,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:22,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 192 transitions, 2484 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:22,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:22,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:22,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:22,553 INFO L124 PetriNetUnfolderBase]: 534/993 cut-off events. [2024-06-04 15:28:22,553 INFO L125 PetriNetUnfolderBase]: For 40079/40079 co-relation queries the response was YES. [2024-06-04 15:28:22,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6670 conditions, 993 events. 534/993 cut-off events. For 40079/40079 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5057 event pairs, 85 based on Foata normal form. 2/995 useless extension candidates. Maximal degree in co-relation 6585. Up to 802 conditions per place. [2024-06-04 15:28:22,559 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 50 changer transitions 0/210 dead transitions. [2024-06-04 15:28:22,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 210 transitions, 2940 flow [2024-06-04 15:28:22,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:22,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 15:28:22,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-04 15:28:22,560 INFO L175 Difference]: Start difference. First operand has 203 places, 192 transitions, 2484 flow. Second operand 12 states and 139 transitions. [2024-06-04 15:28:22,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 210 transitions, 2940 flow [2024-06-04 15:28:22,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 210 transitions, 2807 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:22,645 INFO L231 Difference]: Finished difference. Result has 208 places, 192 transitions, 2456 flow [2024-06-04 15:28:22,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2456, PETRI_PLACES=208, PETRI_TRANSITIONS=192} [2024-06-04 15:28:22,646 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-04 15:28:22,646 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 192 transitions, 2456 flow [2024-06-04 15:28:22,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:22,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:22,646 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 15:28:22,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 15:28:22,646 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 15:28:22,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:22,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1823626888, now seen corresponding path program 14 times [2024-06-04 15:28:22,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:22,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189641681] [2024-06-04 15:28:22,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:22,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:23,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:23,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189641681] [2024-06-04 15:28:23,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189641681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:23,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:23,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:23,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92896407] [2024-06-04 15:28:23,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:23,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:23,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:23,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:23,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:23,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:23,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 192 transitions, 2456 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:23,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:23,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:23,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:23,714 INFO L124 PetriNetUnfolderBase]: 540/1004 cut-off events. [2024-06-04 15:28:23,714 INFO L125 PetriNetUnfolderBase]: For 41647/41647 co-relation queries the response was YES. [2024-06-04 15:28:23,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6756 conditions, 1004 events. 540/1004 cut-off events. For 41647/41647 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5158 event pairs, 99 based on Foata normal form. 2/1006 useless extension candidates. Maximal degree in co-relation 6670. Up to 780 conditions per place. [2024-06-04 15:28:23,721 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 145 selfloop transitions, 64 changer transitions 2/213 dead transitions. [2024-06-04 15:28:23,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 213 transitions, 2991 flow [2024-06-04 15:28:23,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-04 15:28:23,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-04 15:28:23,722 INFO L175 Difference]: Start difference. First operand has 208 places, 192 transitions, 2456 flow. Second operand 9 states and 117 transitions. [2024-06-04 15:28:23,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 213 transitions, 2991 flow [2024-06-04 15:28:23,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 213 transitions, 2874 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 15:28:23,809 INFO L231 Difference]: Finished difference. Result has 208 places, 194 transitions, 2533 flow [2024-06-04 15:28:23,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2533, PETRI_PLACES=208, PETRI_TRANSITIONS=194} [2024-06-04 15:28:23,810 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-04 15:28:23,810 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 194 transitions, 2533 flow [2024-06-04 15:28:23,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:23,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:23,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:23,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 15:28:23,810 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 15:28:23,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:23,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1818264508, now seen corresponding path program 15 times [2024-06-04 15:28:23,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:23,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960345809] [2024-06-04 15:28:23,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:23,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:24,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:24,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960345809] [2024-06-04 15:28:24,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960345809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:24,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:24,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:24,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554347666] [2024-06-04 15:28:24,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:24,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:24,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:24,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:24,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:24,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:24,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 194 transitions, 2533 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:24,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:24,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:24,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:24,983 INFO L124 PetriNetUnfolderBase]: 546/1013 cut-off events. [2024-06-04 15:28:24,983 INFO L125 PetriNetUnfolderBase]: For 44583/44583 co-relation queries the response was YES. [2024-06-04 15:28:24,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6915 conditions, 1013 events. 546/1013 cut-off events. For 44583/44583 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5173 event pairs, 79 based on Foata normal form. 2/1015 useless extension candidates. Maximal degree in co-relation 6828. Up to 774 conditions per place. [2024-06-04 15:28:24,990 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 150 selfloop transitions, 61 changer transitions 0/213 dead transitions. [2024-06-04 15:28:24,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 213 transitions, 3051 flow [2024-06-04 15:28:24,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:24,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:24,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 15:28:24,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-04 15:28:24,991 INFO L175 Difference]: Start difference. First operand has 208 places, 194 transitions, 2533 flow. Second operand 10 states and 126 transitions. [2024-06-04 15:28:24,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 213 transitions, 3051 flow [2024-06-04 15:28:25,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 213 transitions, 2886 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:25,083 INFO L231 Difference]: Finished difference. Result has 210 places, 196 transitions, 2560 flow [2024-06-04 15:28:25,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2560, PETRI_PLACES=210, PETRI_TRANSITIONS=196} [2024-06-04 15:28:25,083 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-04 15:28:25,084 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 196 transitions, 2560 flow [2024-06-04 15:28:25,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:25,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:25,084 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 15:28:25,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 15:28:25,084 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 15:28:25,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:25,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1799680927, now seen corresponding path program 12 times [2024-06-04 15:28:25,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:25,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170315276] [2024-06-04 15:28:25,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:25,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:25,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:25,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170315276] [2024-06-04 15:28:25,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170315276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:25,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:25,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:25,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871011234] [2024-06-04 15:28:25,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:25,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:25,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:25,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:25,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:25,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:25,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 196 transitions, 2560 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:25,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:25,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:25,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:26,240 INFO L124 PetriNetUnfolderBase]: 570/1065 cut-off events. [2024-06-04 15:28:26,240 INFO L125 PetriNetUnfolderBase]: For 58941/58941 co-relation queries the response was YES. [2024-06-04 15:28:26,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7060 conditions, 1065 events. 570/1065 cut-off events. For 58941/58941 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5514 event pairs, 91 based on Foata normal form. 14/1079 useless extension candidates. Maximal degree in co-relation 6973. Up to 788 conditions per place. [2024-06-04 15:28:26,246 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 153 selfloop transitions, 46 changer transitions 17/218 dead transitions. [2024-06-04 15:28:26,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 218 transitions, 3083 flow [2024-06-04 15:28:26,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:26,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-04 15:28:26,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-04 15:28:26,247 INFO L175 Difference]: Start difference. First operand has 210 places, 196 transitions, 2560 flow. Second operand 10 states and 128 transitions. [2024-06-04 15:28:26,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 218 transitions, 3083 flow [2024-06-04 15:28:26,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 218 transitions, 2920 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-04 15:28:26,333 INFO L231 Difference]: Finished difference. Result has 211 places, 187 transitions, 2379 flow [2024-06-04 15:28:26,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2397, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2379, PETRI_PLACES=211, PETRI_TRANSITIONS=187} [2024-06-04 15:28:26,333 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-04 15:28:26,334 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 187 transitions, 2379 flow [2024-06-04 15:28:26,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:26,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:26,334 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 15:28:26,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 15:28:26,334 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 15:28:26,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:26,334 INFO L85 PathProgramCache]: Analyzing trace with hash 922021572, now seen corresponding path program 1 times [2024-06-04 15:28:26,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:26,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299952510] [2024-06-04 15:28:26,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:26,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:27,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:27,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299952510] [2024-06-04 15:28:27,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299952510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:27,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:27,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:27,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259136385] [2024-06-04 15:28:27,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:27,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:27,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:27,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:27,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:27,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:27,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 187 transitions, 2379 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:27,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:27,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:27,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:27,483 INFO L124 PetriNetUnfolderBase]: 524/983 cut-off events. [2024-06-04 15:28:27,483 INFO L125 PetriNetUnfolderBase]: For 43802/43802 co-relation queries the response was YES. [2024-06-04 15:28:27,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 983 events. 524/983 cut-off events. For 43802/43802 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5025 event pairs, 167 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 6481. Up to 944 conditions per place. [2024-06-04 15:28:27,490 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 183 selfloop transitions, 14 changer transitions 0/199 dead transitions. [2024-06-04 15:28:27,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 199 transitions, 2813 flow [2024-06-04 15:28:27,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:27,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:27,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 15:28:27,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-04 15:28:27,491 INFO L175 Difference]: Start difference. First operand has 211 places, 187 transitions, 2379 flow. Second operand 9 states and 98 transitions. [2024-06-04 15:28:27,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 199 transitions, 2813 flow [2024-06-04 15:28:27,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 199 transitions, 2713 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:28:27,566 INFO L231 Difference]: Finished difference. Result has 205 places, 188 transitions, 2329 flow [2024-06-04 15:28:27,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2279, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2329, PETRI_PLACES=205, PETRI_TRANSITIONS=188} [2024-06-04 15:28:27,567 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-04 15:28:27,567 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 188 transitions, 2329 flow [2024-06-04 15:28:27,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:27,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:27,567 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 15:28:27,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 15:28:27,568 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 15:28:27,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:27,568 INFO L85 PathProgramCache]: Analyzing trace with hash -370303064, now seen corresponding path program 16 times [2024-06-04 15:28:27,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:27,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684166660] [2024-06-04 15:28:27,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:27,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:28,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:28,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684166660] [2024-06-04 15:28:28,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684166660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:28,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:28,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:28,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322095227] [2024-06-04 15:28:28,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:28,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:28,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:28,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:28,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:28,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:28,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 188 transitions, 2329 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:28,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:28,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:28,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:28,667 INFO L124 PetriNetUnfolderBase]: 540/1009 cut-off events. [2024-06-04 15:28:28,668 INFO L125 PetriNetUnfolderBase]: For 43610/43610 co-relation queries the response was YES. [2024-06-04 15:28:28,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6790 conditions, 1009 events. 540/1009 cut-off events. For 43610/43610 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5157 event pairs, 163 based on Foata normal form. 2/1011 useless extension candidates. Maximal degree in co-relation 6705. Up to 918 conditions per place. [2024-06-04 15:28:28,674 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 28 changer transitions 0/209 dead transitions. [2024-06-04 15:28:28,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 209 transitions, 3016 flow [2024-06-04 15:28:28,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:28,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 15:28:28,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-04 15:28:28,675 INFO L175 Difference]: Start difference. First operand has 205 places, 188 transitions, 2329 flow. Second operand 10 states and 115 transitions. [2024-06-04 15:28:28,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 209 transitions, 3016 flow [2024-06-04 15:28:28,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 209 transitions, 2976 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:28,736 INFO L231 Difference]: Finished difference. Result has 208 places, 192 transitions, 2478 flow [2024-06-04 15:28:28,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2289, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2478, PETRI_PLACES=208, PETRI_TRANSITIONS=192} [2024-06-04 15:28:28,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-04 15:28:28,737 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 192 transitions, 2478 flow [2024-06-04 15:28:28,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:28,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:28,737 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 15:28:28,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 15:28:28,737 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 15:28:28,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:28,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1170594799, now seen corresponding path program 13 times [2024-06-04 15:28:28,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:28,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754426075] [2024-06-04 15:28:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:28,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:29,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:29,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754426075] [2024-06-04 15:28:29,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754426075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:29,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:29,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:29,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682734512] [2024-06-04 15:28:29,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:29,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:29,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:29,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:29,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:29,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:29,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 192 transitions, 2478 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:29,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:29,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:29,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:29,920 INFO L124 PetriNetUnfolderBase]: 564/1061 cut-off events. [2024-06-04 15:28:29,920 INFO L125 PetriNetUnfolderBase]: For 59355/59355 co-relation queries the response was YES. [2024-06-04 15:28:29,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7045 conditions, 1061 events. 564/1061 cut-off events. For 59355/59355 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5558 event pairs, 176 based on Foata normal form. 14/1075 useless extension candidates. Maximal degree in co-relation 6959. Up to 951 conditions per place. [2024-06-04 15:28:29,926 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 15 changer transitions 13/213 dead transitions. [2024-06-04 15:28:29,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 213 transitions, 3006 flow [2024-06-04 15:28:29,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:29,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:29,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 15:28:29,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-04 15:28:29,927 INFO L175 Difference]: Start difference. First operand has 208 places, 192 transitions, 2478 flow. Second operand 10 states and 116 transitions. [2024-06-04 15:28:29,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 213 transitions, 3006 flow [2024-06-04 15:28:29,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 213 transitions, 2924 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:29,998 INFO L231 Difference]: Finished difference. Result has 212 places, 188 transitions, 2370 flow [2024-06-04 15:28:29,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2396, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2370, PETRI_PLACES=212, PETRI_TRANSITIONS=188} [2024-06-04 15:28:29,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-04 15:28:29,999 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 188 transitions, 2370 flow [2024-06-04 15:28:29,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:29,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:29,999 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 15:28:29,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 15:28:29,999 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:29,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:29,999 INFO L85 PathProgramCache]: Analyzing trace with hash -564027148, now seen corresponding path program 2 times [2024-06-04 15:28:30,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:30,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439746367] [2024-06-04 15:28:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:30,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:30,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439746367] [2024-06-04 15:28:30,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439746367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:30,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:30,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:30,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161964630] [2024-06-04 15:28:30,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:30,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:30,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:30,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:30,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:30,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:30,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 188 transitions, 2370 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:30,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:30,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:30,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:31,131 INFO L124 PetriNetUnfolderBase]: 532/1005 cut-off events. [2024-06-04 15:28:31,131 INFO L125 PetriNetUnfolderBase]: For 46323/46323 co-relation queries the response was YES. [2024-06-04 15:28:31,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6743 conditions, 1005 events. 532/1005 cut-off events. For 46323/46323 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5212 event pairs, 172 based on Foata normal form. 2/1007 useless extension candidates. Maximal degree in co-relation 6655. Up to 959 conditions per place. [2024-06-04 15:28:31,138 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 182 selfloop transitions, 17 changer transitions 0/201 dead transitions. [2024-06-04 15:28:31,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 201 transitions, 2821 flow [2024-06-04 15:28:31,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:31,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 15:28:31,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-04 15:28:31,143 INFO L175 Difference]: Start difference. First operand has 212 places, 188 transitions, 2370 flow. Second operand 9 states and 101 transitions. [2024-06-04 15:28:31,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 201 transitions, 2821 flow [2024-06-04 15:28:31,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 201 transitions, 2785 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:31,223 INFO L231 Difference]: Finished difference. Result has 214 places, 190 transitions, 2408 flow [2024-06-04 15:28:31,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2408, PETRI_PLACES=214, PETRI_TRANSITIONS=190} [2024-06-04 15:28:31,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-04 15:28:31,224 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 190 transitions, 2408 flow [2024-06-04 15:28:31,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:31,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:31,224 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 15:28:31,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 15:28:31,225 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:31,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:31,225 INFO L85 PathProgramCache]: Analyzing trace with hash 887008324, now seen corresponding path program 17 times [2024-06-04 15:28:31,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:31,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391504509] [2024-06-04 15:28:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:31,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:31,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:31,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391504509] [2024-06-04 15:28:31,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391504509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:31,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:31,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:31,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462752826] [2024-06-04 15:28:31,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:31,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:31,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:31,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:31,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:32,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:32,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 190 transitions, 2408 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:32,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:32,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:32,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:32,372 INFO L124 PetriNetUnfolderBase]: 528/999 cut-off events. [2024-06-04 15:28:32,373 INFO L125 PetriNetUnfolderBase]: For 45408/45408 co-relation queries the response was YES. [2024-06-04 15:28:32,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6625 conditions, 999 events. 528/999 cut-off events. For 45408/45408 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5189 event pairs, 160 based on Foata normal form. 2/1001 useless extension candidates. Maximal degree in co-relation 6535. Up to 915 conditions per place. [2024-06-04 15:28:32,379 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 27 changer transitions 1/206 dead transitions. [2024-06-04 15:28:32,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 206 transitions, 2858 flow [2024-06-04 15:28:32,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:32,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 15:28:32,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-04 15:28:32,380 INFO L175 Difference]: Start difference. First operand has 214 places, 190 transitions, 2408 flow. Second operand 10 states and 118 transitions. [2024-06-04 15:28:32,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 206 transitions, 2858 flow [2024-06-04 15:28:32,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 206 transitions, 2785 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:32,469 INFO L231 Difference]: Finished difference. Result has 217 places, 190 transitions, 2394 flow [2024-06-04 15:28:32,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2394, PETRI_PLACES=217, PETRI_TRANSITIONS=190} [2024-06-04 15:28:32,469 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-04 15:28:32,469 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 190 transitions, 2394 flow [2024-06-04 15:28:32,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:32,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:32,470 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 15:28:32,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 15:28:32,470 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:32,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:32,470 INFO L85 PathProgramCache]: Analyzing trace with hash 354404143, now seen corresponding path program 14 times [2024-06-04 15:28:32,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:32,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421350958] [2024-06-04 15:28:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:32,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:33,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:33,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:33,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421350958] [2024-06-04 15:28:33,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421350958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:33,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:33,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:33,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974792457] [2024-06-04 15:28:33,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:33,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:33,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:33,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:33,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:33,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:33,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 190 transitions, 2394 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:33,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:33,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:33,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:33,616 INFO L124 PetriNetUnfolderBase]: 509/966 cut-off events. [2024-06-04 15:28:33,616 INFO L125 PetriNetUnfolderBase]: For 44241/44241 co-relation queries the response was YES. [2024-06-04 15:28:33,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5775 conditions, 966 events. 509/966 cut-off events. For 44241/44241 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5025 event pairs, 150 based on Foata normal form. 14/980 useless extension candidates. Maximal degree in co-relation 5685. Up to 844 conditions per place. [2024-06-04 15:28:33,623 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 18 changer transitions 14/210 dead transitions. [2024-06-04 15:28:33,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 210 transitions, 2896 flow [2024-06-04 15:28:33,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 15:28:33,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-04 15:28:33,624 INFO L175 Difference]: Start difference. First operand has 217 places, 190 transitions, 2394 flow. Second operand 10 states and 120 transitions. [2024-06-04 15:28:33,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 210 transitions, 2896 flow [2024-06-04 15:28:33,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 210 transitions, 2733 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:33,705 INFO L231 Difference]: Finished difference. Result has 217 places, 184 transitions, 2199 flow [2024-06-04 15:28:33,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2231, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2199, PETRI_PLACES=217, PETRI_TRANSITIONS=184} [2024-06-04 15:28:33,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-04 15:28:33,705 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 184 transitions, 2199 flow [2024-06-04 15:28:33,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:33,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:33,706 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 15:28:33,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 15:28:33,706 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:33,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:33,706 INFO L85 PathProgramCache]: Analyzing trace with hash -637775292, now seen corresponding path program 3 times [2024-06-04 15:28:33,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:33,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577096395] [2024-06-04 15:28:33,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:33,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:34,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:34,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577096395] [2024-06-04 15:28:34,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577096395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:34,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:34,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:34,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790273207] [2024-06-04 15:28:34,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:34,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:34,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:34,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:34,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:34,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:34,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 184 transitions, 2199 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:34,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:34,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:34,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:34,792 INFO L124 PetriNetUnfolderBase]: 471/892 cut-off events. [2024-06-04 15:28:34,793 INFO L125 PetriNetUnfolderBase]: For 28298/28298 co-relation queries the response was YES. [2024-06-04 15:28:34,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5314 conditions, 892 events. 471/892 cut-off events. For 28298/28298 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4527 event pairs, 148 based on Foata normal form. 2/894 useless extension candidates. Maximal degree in co-relation 5224. Up to 858 conditions per place. [2024-06-04 15:28:34,798 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 180 selfloop transitions, 13 changer transitions 0/195 dead transitions. [2024-06-04 15:28:34,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 195 transitions, 2627 flow [2024-06-04 15:28:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:34,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-04 15:28:34,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-04 15:28:34,799 INFO L175 Difference]: Start difference. First operand has 217 places, 184 transitions, 2199 flow. Second operand 9 states and 96 transitions. [2024-06-04 15:28:34,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 195 transitions, 2627 flow [2024-06-04 15:28:34,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 195 transitions, 2481 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 15:28:34,862 INFO L231 Difference]: Finished difference. Result has 214 places, 185 transitions, 2105 flow [2024-06-04 15:28:34,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2105, PETRI_PLACES=214, PETRI_TRANSITIONS=185} [2024-06-04 15:28:34,862 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-04 15:28:34,862 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 185 transitions, 2105 flow [2024-06-04 15:28:34,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:34,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:34,863 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 15:28:34,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 15:28:34,863 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:34,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:34,863 INFO L85 PathProgramCache]: Analyzing trace with hash -904355608, now seen corresponding path program 4 times [2024-06-04 15:28:34,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:34,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380839269] [2024-06-04 15:28:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:34,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:35,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:35,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:35,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380839269] [2024-06-04 15:28:35,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380839269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:35,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:35,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:35,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845509153] [2024-06-04 15:28:35,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:35,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:35,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:35,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:35,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:35,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:35,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 185 transitions, 2105 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:35,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:35,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:35,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:35,910 INFO L124 PetriNetUnfolderBase]: 468/887 cut-off events. [2024-06-04 15:28:35,911 INFO L125 PetriNetUnfolderBase]: For 26060/26060 co-relation queries the response was YES. [2024-06-04 15:28:35,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 887 events. 468/887 cut-off events. For 26060/26060 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4504 event pairs, 138 based on Foata normal form. 2/889 useless extension candidates. Maximal degree in co-relation 4954. Up to 848 conditions per place. [2024-06-04 15:28:35,916 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 181 selfloop transitions, 13 changer transitions 0/196 dead transitions. [2024-06-04 15:28:35,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 196 transitions, 2517 flow [2024-06-04 15:28:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:35,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-04 15:28:35,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-04 15:28:35,917 INFO L175 Difference]: Start difference. First operand has 214 places, 185 transitions, 2105 flow. Second operand 9 states and 96 transitions. [2024-06-04 15:28:35,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 196 transitions, 2517 flow [2024-06-04 15:28:35,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 196 transitions, 2411 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-04 15:28:35,975 INFO L231 Difference]: Finished difference. Result has 212 places, 185 transitions, 2029 flow [2024-06-04 15:28:35,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2029, PETRI_PLACES=212, PETRI_TRANSITIONS=185} [2024-06-04 15:28:35,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-04 15:28:35,976 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 185 transitions, 2029 flow [2024-06-04 15:28:35,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:35,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:35,976 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 15:28:35,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 15:28:35,976 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:35,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:35,977 INFO L85 PathProgramCache]: Analyzing trace with hash -381282718, now seen corresponding path program 18 times [2024-06-04 15:28:35,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:35,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79544068] [2024-06-04 15:28:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:35,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:36,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:36,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79544068] [2024-06-04 15:28:36,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79544068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:36,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:36,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:36,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847939200] [2024-06-04 15:28:36,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:36,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:36,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:36,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:36,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:36,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:36,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 185 transitions, 2029 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:36,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:36,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:36,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:37,037 INFO L124 PetriNetUnfolderBase]: 464/880 cut-off events. [2024-06-04 15:28:37,037 INFO L125 PetriNetUnfolderBase]: For 23231/23231 co-relation queries the response was YES. [2024-06-04 15:28:37,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4826 conditions, 880 events. 464/880 cut-off events. For 23231/23231 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4468 event pairs, 140 based on Foata normal form. 2/882 useless extension candidates. Maximal degree in co-relation 4736. Up to 832 conditions per place. [2024-06-04 15:28:37,043 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 17 changer transitions 0/198 dead transitions. [2024-06-04 15:28:37,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 198 transitions, 2449 flow [2024-06-04 15:28:37,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:37,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:37,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 15:28:37,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-04 15:28:37,044 INFO L175 Difference]: Start difference. First operand has 212 places, 185 transitions, 2029 flow. Second operand 10 states and 109 transitions. [2024-06-04 15:28:37,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 198 transitions, 2449 flow [2024-06-04 15:28:37,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 198 transitions, 2332 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-04 15:28:37,104 INFO L231 Difference]: Finished difference. Result has 213 places, 185 transitions, 1951 flow [2024-06-04 15:28:37,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1951, PETRI_PLACES=213, PETRI_TRANSITIONS=185} [2024-06-04 15:28:37,105 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-04 15:28:37,105 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 185 transitions, 1951 flow [2024-06-04 15:28:37,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:37,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:37,105 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 15:28:37,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 15:28:37,105 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:37,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:37,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1998142108, now seen corresponding path program 1 times [2024-06-04 15:28:37,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:37,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104892851] [2024-06-04 15:28:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:37,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:37,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:37,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104892851] [2024-06-04 15:28:37,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104892851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:37,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:37,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:37,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191330920] [2024-06-04 15:28:37,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:37,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:37,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:37,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:37,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:37,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:37,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 185 transitions, 1951 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:37,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:37,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:37,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:38,312 INFO L124 PetriNetUnfolderBase]: 526/1012 cut-off events. [2024-06-04 15:28:38,313 INFO L125 PetriNetUnfolderBase]: For 47658/47658 co-relation queries the response was YES. [2024-06-04 15:28:38,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5707 conditions, 1012 events. 526/1012 cut-off events. For 47658/47658 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5389 event pairs, 111 based on Foata normal form. 8/1020 useless extension candidates. Maximal degree in co-relation 5618. Up to 522 conditions per place. [2024-06-04 15:28:38,319 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 153 selfloop transitions, 51 changer transitions 15/221 dead transitions. [2024-06-04 15:28:38,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 221 transitions, 2651 flow [2024-06-04 15:28:38,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:38,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:38,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-04 15:28:38,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-04 15:28:38,320 INFO L175 Difference]: Start difference. First operand has 213 places, 185 transitions, 1951 flow. Second operand 11 states and 147 transitions. [2024-06-04 15:28:38,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 221 transitions, 2651 flow [2024-06-04 15:28:38,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 221 transitions, 2550 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:38,408 INFO L231 Difference]: Finished difference. Result has 217 places, 183 transitions, 1958 flow [2024-06-04 15:28:38,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1958, PETRI_PLACES=217, PETRI_TRANSITIONS=183} [2024-06-04 15:28:38,409 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-04 15:28:38,409 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 183 transitions, 1958 flow [2024-06-04 15:28:38,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:38,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:38,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:38,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 15:28:38,409 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:38,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:38,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1489987466, now seen corresponding path program 2 times [2024-06-04 15:28:38,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:38,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823100122] [2024-06-04 15:28:38,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:38,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:39,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:39,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823100122] [2024-06-04 15:28:39,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823100122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:39,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:39,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:39,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101871165] [2024-06-04 15:28:39,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:39,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:39,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:39,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:39,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:39,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:39,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 183 transitions, 1958 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:39,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:39,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:39,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:39,586 INFO L124 PetriNetUnfolderBase]: 547/1061 cut-off events. [2024-06-04 15:28:39,586 INFO L125 PetriNetUnfolderBase]: For 65492/65492 co-relation queries the response was YES. [2024-06-04 15:28:39,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6447 conditions, 1061 events. 547/1061 cut-off events. For 65492/65492 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5756 event pairs, 124 based on Foata normal form. 8/1069 useless extension candidates. Maximal degree in co-relation 6355. Up to 699 conditions per place. [2024-06-04 15:28:39,593 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 152 selfloop transitions, 52 changer transitions 10/216 dead transitions. [2024-06-04 15:28:39,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 216 transitions, 2634 flow [2024-06-04 15:28:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:39,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-04 15:28:39,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2024-06-04 15:28:39,594 INFO L175 Difference]: Start difference. First operand has 217 places, 183 transitions, 1958 flow. Second operand 11 states and 148 transitions. [2024-06-04 15:28:39,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 216 transitions, 2634 flow [2024-06-04 15:28:39,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 216 transitions, 2545 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 15:28:39,735 INFO L231 Difference]: Finished difference. Result has 218 places, 182 transitions, 1969 flow [2024-06-04 15:28:39,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1969, PETRI_PLACES=218, PETRI_TRANSITIONS=182} [2024-06-04 15:28:39,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-04 15:28:39,736 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 182 transitions, 1969 flow [2024-06-04 15:28:39,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:39,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:39,736 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 15:28:39,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 15:28:39,736 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:39,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:39,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1490102786, now seen corresponding path program 3 times [2024-06-04 15:28:39,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:39,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199556581] [2024-06-04 15:28:39,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:39,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:40,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:40,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199556581] [2024-06-04 15:28:40,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199556581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:40,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:40,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:40,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042639563] [2024-06-04 15:28:40,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:40,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:40,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:40,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:40,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:40,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:40,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 182 transitions, 1969 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:40,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:40,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:40,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:41,144 INFO L124 PetriNetUnfolderBase]: 578/1130 cut-off events. [2024-06-04 15:28:41,144 INFO L125 PetriNetUnfolderBase]: For 93849/93849 co-relation queries the response was YES. [2024-06-04 15:28:41,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7328 conditions, 1130 events. 578/1130 cut-off events. For 93849/93849 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6287 event pairs, 131 based on Foata normal form. 16/1146 useless extension candidates. Maximal degree in co-relation 7236. Up to 661 conditions per place. [2024-06-04 15:28:41,150 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 147 selfloop transitions, 54 changer transitions 10/213 dead transitions. [2024-06-04 15:28:41,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 213 transitions, 2629 flow [2024-06-04 15:28:41,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:28:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:28:41,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-04 15:28:41,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4094292803970223 [2024-06-04 15:28:41,151 INFO L175 Difference]: Start difference. First operand has 218 places, 182 transitions, 1969 flow. Second operand 13 states and 165 transitions. [2024-06-04 15:28:41,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 213 transitions, 2629 flow [2024-06-04 15:28:41,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 213 transitions, 2517 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:41,269 INFO L231 Difference]: Finished difference. Result has 219 places, 178 transitions, 1909 flow [2024-06-04 15:28:41,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1859, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1909, PETRI_PLACES=219, PETRI_TRANSITIONS=178} [2024-06-04 15:28:41,269 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-04 15:28:41,269 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 178 transitions, 1909 flow [2024-06-04 15:28:41,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:41,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:41,270 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 15:28:41,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 15:28:41,270 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:41,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:41,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1490107436, now seen corresponding path program 4 times [2024-06-04 15:28:41,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:41,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205390592] [2024-06-04 15:28:41,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:41,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:41,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:41,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205390592] [2024-06-04 15:28:41,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205390592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:41,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:41,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:41,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488323228] [2024-06-04 15:28:41,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:41,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:41,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:41,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:41,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:42,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:42,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 178 transitions, 1909 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:42,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:42,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:42,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:42,351 INFO L124 PetriNetUnfolderBase]: 527/1029 cut-off events. [2024-06-04 15:28:42,351 INFO L125 PetriNetUnfolderBase]: For 68818/68818 co-relation queries the response was YES. [2024-06-04 15:28:42,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6378 conditions, 1029 events. 527/1029 cut-off events. For 68818/68818 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5575 event pairs, 128 based on Foata normal form. 10/1039 useless extension candidates. Maximal degree in co-relation 6288. Up to 746 conditions per place. [2024-06-04 15:28:42,358 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 138 selfloop transitions, 44 changer transitions 18/202 dead transitions. [2024-06-04 15:28:42,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 202 transitions, 2397 flow [2024-06-04 15:28:42,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 15:28:42,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-04 15:28:42,359 INFO L175 Difference]: Start difference. First operand has 219 places, 178 transitions, 1909 flow. Second operand 11 states and 139 transitions. [2024-06-04 15:28:42,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 202 transitions, 2397 flow [2024-06-04 15:28:42,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 202 transitions, 2285 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 15:28:42,473 INFO L231 Difference]: Finished difference. Result has 217 places, 171 transitions, 1806 flow [2024-06-04 15:28:42,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1806, PETRI_PLACES=217, PETRI_TRANSITIONS=171} [2024-06-04 15:28:42,474 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-04 15:28:42,474 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 171 transitions, 1806 flow [2024-06-04 15:28:42,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:42,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:42,474 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 15:28:42,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 15:28:42,475 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:42,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:42,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1555448342, now seen corresponding path program 5 times [2024-06-04 15:28:42,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:42,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275901237] [2024-06-04 15:28:42,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:42,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:43,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:43,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275901237] [2024-06-04 15:28:43,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275901237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:43,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:43,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:43,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263898043] [2024-06-04 15:28:43,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:43,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:43,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:43,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:43,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:43,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:43,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 171 transitions, 1806 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:43,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:43,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:43,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:43,791 INFO L124 PetriNetUnfolderBase]: 484/945 cut-off events. [2024-06-04 15:28:43,791 INFO L125 PetriNetUnfolderBase]: For 52859/52859 co-relation queries the response was YES. [2024-06-04 15:28:43,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5420 conditions, 945 events. 484/945 cut-off events. For 52859/52859 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5009 event pairs, 111 based on Foata normal form. 10/955 useless extension candidates. Maximal degree in co-relation 5330. Up to 750 conditions per place. [2024-06-04 15:28:43,797 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 147 selfloop transitions, 30 changer transitions 13/192 dead transitions. [2024-06-04 15:28:43,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 192 transitions, 2266 flow [2024-06-04 15:28:43,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:43,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:43,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:28:43,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-04 15:28:43,798 INFO L175 Difference]: Start difference. First operand has 217 places, 171 transitions, 1806 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:28:43,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 192 transitions, 2266 flow [2024-06-04 15:28:43,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 192 transitions, 2146 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:43,880 INFO L231 Difference]: Finished difference. Result has 210 places, 167 transitions, 1700 flow [2024-06-04 15:28:43,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1700, PETRI_PLACES=210, PETRI_TRANSITIONS=167} [2024-06-04 15:28:43,880 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-04 15:28:43,880 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 167 transitions, 1700 flow [2024-06-04 15:28:43,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:43,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:43,881 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 15:28:43,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 15:28:43,881 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:43,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:43,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1883449106, now seen corresponding path program 6 times [2024-06-04 15:28:43,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:43,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212919547] [2024-06-04 15:28:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:43,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:44,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:44,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212919547] [2024-06-04 15:28:44,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212919547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:44,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:44,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:44,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799294202] [2024-06-04 15:28:44,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:44,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:44,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:44,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:44,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:45,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:45,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 167 transitions, 1700 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:45,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:45,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:45,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:45,535 INFO L124 PetriNetUnfolderBase]: 500/981 cut-off events. [2024-06-04 15:28:45,535 INFO L125 PetriNetUnfolderBase]: For 65116/65116 co-relation queries the response was YES. [2024-06-04 15:28:45,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5996 conditions, 981 events. 500/981 cut-off events. For 65116/65116 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5239 event pairs, 116 based on Foata normal form. 8/989 useless extension candidates. Maximal degree in co-relation 5907. Up to 678 conditions per place. [2024-06-04 15:28:45,542 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 32 changer transitions 11/197 dead transitions. [2024-06-04 15:28:45,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 197 transitions, 2330 flow [2024-06-04 15:28:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 15:28:45,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-04 15:28:45,544 INFO L175 Difference]: Start difference. First operand has 210 places, 167 transitions, 1700 flow. Second operand 11 states and 143 transitions. [2024-06-04 15:28:45,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 197 transitions, 2330 flow [2024-06-04 15:28:45,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 197 transitions, 2262 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:45,646 INFO L231 Difference]: Finished difference. Result has 210 places, 166 transitions, 1694 flow [2024-06-04 15:28:45,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1694, PETRI_PLACES=210, PETRI_TRANSITIONS=166} [2024-06-04 15:28:45,646 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-04 15:28:45,647 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 166 transitions, 1694 flow [2024-06-04 15:28:45,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:45,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:45,647 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 15:28:45,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 15:28:45,647 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:45,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:45,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1883329136, now seen corresponding path program 7 times [2024-06-04 15:28:45,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:45,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363846040] [2024-06-04 15:28:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:45,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:46,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:46,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:46,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363846040] [2024-06-04 15:28:46,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363846040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:46,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:46,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:46,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220105569] [2024-06-04 15:28:46,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:46,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:46,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:46,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:46,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:46,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:46,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 166 transitions, 1694 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:46,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:46,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:46,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:46,976 INFO L124 PetriNetUnfolderBase]: 465/912 cut-off events. [2024-06-04 15:28:46,976 INFO L125 PetriNetUnfolderBase]: For 52688/52688 co-relation queries the response was YES. [2024-06-04 15:28:46,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5208 conditions, 912 events. 465/912 cut-off events. For 52688/52688 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4783 event pairs, 105 based on Foata normal form. 10/922 useless extension candidates. Maximal degree in co-relation 5117. Up to 702 conditions per place. [2024-06-04 15:28:46,983 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 142 selfloop transitions, 29 changer transitions 17/190 dead transitions. [2024-06-04 15:28:46,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 190 transitions, 2160 flow [2024-06-04 15:28:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:28:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:28:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-06-04 15:28:46,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37220843672456577 [2024-06-04 15:28:46,984 INFO L175 Difference]: Start difference. First operand has 210 places, 166 transitions, 1694 flow. Second operand 13 states and 150 transitions. [2024-06-04 15:28:46,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 190 transitions, 2160 flow [2024-06-04 15:28:47,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 190 transitions, 2086 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:28:47,078 INFO L231 Difference]: Finished difference. Result has 210 places, 158 transitions, 1600 flow [2024-06-04 15:28:47,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1600, PETRI_PLACES=210, PETRI_TRANSITIONS=158} [2024-06-04 15:28:47,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-04 15:28:47,079 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 158 transitions, 1600 flow [2024-06-04 15:28:47,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:47,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:47,079 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 15:28:47,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 15:28:47,079 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:47,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:47,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1311928148, now seen corresponding path program 8 times [2024-06-04 15:28:47,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:47,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293993727] [2024-06-04 15:28:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:47,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:47,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:47,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293993727] [2024-06-04 15:28:47,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293993727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:47,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:47,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:47,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695630955] [2024-06-04 15:28:47,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:47,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:47,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:47,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:47,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:47,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:47,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 158 transitions, 1600 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:47,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:47,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:47,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:48,381 INFO L124 PetriNetUnfolderBase]: 472/921 cut-off events. [2024-06-04 15:28:48,381 INFO L125 PetriNetUnfolderBase]: For 67943/67943 co-relation queries the response was YES. [2024-06-04 15:28:48,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5817 conditions, 921 events. 472/921 cut-off events. For 67943/67943 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4832 event pairs, 92 based on Foata normal form. 8/929 useless extension candidates. Maximal degree in co-relation 5728. Up to 466 conditions per place. [2024-06-04 15:28:48,387 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 64 changer transitions 18/192 dead transitions. [2024-06-04 15:28:48,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 192 transitions, 2240 flow [2024-06-04 15:28:48,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:48,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 15:28:48,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-04 15:28:48,388 INFO L175 Difference]: Start difference. First operand has 210 places, 158 transitions, 1600 flow. Second operand 11 states and 140 transitions. [2024-06-04 15:28:48,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 192 transitions, 2240 flow [2024-06-04 15:28:48,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 192 transitions, 2141 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-04 15:28:48,490 INFO L231 Difference]: Finished difference. Result has 205 places, 156 transitions, 1622 flow [2024-06-04 15:28:48,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1622, PETRI_PLACES=205, PETRI_TRANSITIONS=156} [2024-06-04 15:28:48,491 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-04 15:28:48,491 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 156 transitions, 1622 flow [2024-06-04 15:28:48,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:48,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:48,491 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 15:28:48,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 15:28:48,491 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:48,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:48,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1956000312, now seen corresponding path program 9 times [2024-06-04 15:28:48,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:48,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352468031] [2024-06-04 15:28:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:48,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:49,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:49,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352468031] [2024-06-04 15:28:49,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352468031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:49,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:49,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:49,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931161903] [2024-06-04 15:28:49,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:49,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:49,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:49,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 156 transitions, 1622 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:49,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:49,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:49,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:49,702 INFO L124 PetriNetUnfolderBase]: 512/999 cut-off events. [2024-06-04 15:28:49,702 INFO L125 PetriNetUnfolderBase]: For 87256/87256 co-relation queries the response was YES. [2024-06-04 15:28:49,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6852 conditions, 999 events. 512/999 cut-off events. For 87256/87256 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5338 event pairs, 122 based on Foata normal form. 8/1007 useless extension candidates. Maximal degree in co-relation 6762. Up to 443 conditions per place. [2024-06-04 15:28:49,708 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 114 selfloop transitions, 65 changer transitions 14/195 dead transitions. [2024-06-04 15:28:49,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 195 transitions, 2290 flow [2024-06-04 15:28:49,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-04 15:28:49,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327956989247312 [2024-06-04 15:28:49,709 INFO L175 Difference]: Start difference. First operand has 205 places, 156 transitions, 1622 flow. Second operand 12 states and 161 transitions. [2024-06-04 15:28:49,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 195 transitions, 2290 flow [2024-06-04 15:28:49,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 195 transitions, 2104 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-04 15:28:49,801 INFO L231 Difference]: Finished difference. Result has 203 places, 155 transitions, 1587 flow [2024-06-04 15:28:49,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1587, PETRI_PLACES=203, PETRI_TRANSITIONS=155} [2024-06-04 15:28:49,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-04 15:28:49,801 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 155 transitions, 1587 flow [2024-06-04 15:28:49,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:49,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:49,801 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 15:28:49,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 15:28:49,802 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:49,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:49,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1065520576, now seen corresponding path program 10 times [2024-06-04 15:28:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:49,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686306669] [2024-06-04 15:28:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:49,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:50,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:50,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:50,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686306669] [2024-06-04 15:28:50,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686306669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:50,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:50,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:50,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208848469] [2024-06-04 15:28:50,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:50,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:50,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:50,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:50,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:50,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:50,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 155 transitions, 1587 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:50,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:50,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:50,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:51,105 INFO L124 PetriNetUnfolderBase]: 525/1028 cut-off events. [2024-06-04 15:28:51,105 INFO L125 PetriNetUnfolderBase]: For 102891/102891 co-relation queries the response was YES. [2024-06-04 15:28:51,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7478 conditions, 1028 events. 525/1028 cut-off events. For 102891/102891 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5573 event pairs, 127 based on Foata normal form. 8/1036 useless extension candidates. Maximal degree in co-relation 7392. Up to 662 conditions per place. [2024-06-04 15:28:51,112 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 108 selfloop transitions, 71 changer transitions 7/188 dead transitions. [2024-06-04 15:28:51,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 188 transitions, 2199 flow [2024-06-04 15:28:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 15:28:51,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 15:28:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 175 transitions. [2024-06-04 15:28:51,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-04 15:28:51,113 INFO L175 Difference]: Start difference. First operand has 203 places, 155 transitions, 1587 flow. Second operand 14 states and 175 transitions. [2024-06-04 15:28:51,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 188 transitions, 2199 flow [2024-06-04 15:28:51,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 188 transitions, 2004 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-04 15:28:51,247 INFO L231 Difference]: Finished difference. Result has 202 places, 153 transitions, 1523 flow [2024-06-04 15:28:51,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1523, PETRI_PLACES=202, PETRI_TRANSITIONS=153} [2024-06-04 15:28:51,248 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-04 15:28:51,248 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 153 transitions, 1523 flow [2024-06-04 15:28:51,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:51,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:51,248 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 15:28:51,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 15:28:51,248 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:51,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:51,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1897787892, now seen corresponding path program 11 times [2024-06-04 15:28:51,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:51,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617528276] [2024-06-04 15:28:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:51,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:51,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:51,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:51,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617528276] [2024-06-04 15:28:51,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617528276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:51,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:51,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:51,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121448728] [2024-06-04 15:28:51,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:51,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:51,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:51,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:51,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:52,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:52,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 153 transitions, 1523 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:52,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:52,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:52,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:52,480 INFO L124 PetriNetUnfolderBase]: 494/967 cut-off events. [2024-06-04 15:28:52,480 INFO L125 PetriNetUnfolderBase]: For 89989/89989 co-relation queries the response was YES. [2024-06-04 15:28:52,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6645 conditions, 967 events. 494/967 cut-off events. For 89989/89989 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5156 event pairs, 110 based on Foata normal form. 10/977 useless extension candidates. Maximal degree in co-relation 6563. Up to 638 conditions per place. [2024-06-04 15:28:52,486 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 93 selfloop transitions, 68 changer transitions 13/176 dead transitions. [2024-06-04 15:28:52,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 176 transitions, 1957 flow [2024-06-04 15:28:52,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:52,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:28:52,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-04 15:28:52,487 INFO L175 Difference]: Start difference. First operand has 202 places, 153 transitions, 1523 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:28:52,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 176 transitions, 1957 flow [2024-06-04 15:28:52,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 176 transitions, 1811 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-04 15:28:52,582 INFO L231 Difference]: Finished difference. Result has 197 places, 149 transitions, 1482 flow [2024-06-04 15:28:52,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1482, PETRI_PLACES=197, PETRI_TRANSITIONS=149} [2024-06-04 15:28:52,582 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-04 15:28:52,582 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 149 transitions, 1482 flow [2024-06-04 15:28:52,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:52,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:52,583 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 15:28:52,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 15:28:52,583 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:52,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:52,583 INFO L85 PathProgramCache]: Analyzing trace with hash 677526436, now seen corresponding path program 12 times [2024-06-04 15:28:52,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:52,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597577157] [2024-06-04 15:28:52,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:52,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:53,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:53,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597577157] [2024-06-04 15:28:53,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597577157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:53,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:53,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:53,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859916759] [2024-06-04 15:28:53,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:53,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:53,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:53,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:53,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:53,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:53,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 149 transitions, 1482 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:53,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:53,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:53,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:53,800 INFO L124 PetriNetUnfolderBase]: 467/918 cut-off events. [2024-06-04 15:28:53,800 INFO L125 PetriNetUnfolderBase]: For 77475/77475 co-relation queries the response was YES. [2024-06-04 15:28:53,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6152 conditions, 918 events. 467/918 cut-off events. For 77475/77475 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4834 event pairs, 106 based on Foata normal form. 8/926 useless extension candidates. Maximal degree in co-relation 6071. Up to 618 conditions per place. [2024-06-04 15:28:53,806 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 96 selfloop transitions, 63 changer transitions 18/179 dead transitions. [2024-06-04 15:28:53,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 179 transitions, 1930 flow [2024-06-04 15:28:53,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:28:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:28:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-04 15:28:53,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3970223325062035 [2024-06-04 15:28:53,807 INFO L175 Difference]: Start difference. First operand has 197 places, 149 transitions, 1482 flow. Second operand 13 states and 160 transitions. [2024-06-04 15:28:53,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 179 transitions, 1930 flow [2024-06-04 15:28:53,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 179 transitions, 1783 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:28:53,907 INFO L231 Difference]: Finished difference. Result has 198 places, 144 transitions, 1423 flow [2024-06-04 15:28:53,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1423, PETRI_PLACES=198, PETRI_TRANSITIONS=144} [2024-06-04 15:28:53,907 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-04 15:28:53,907 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 144 transitions, 1423 flow [2024-06-04 15:28:53,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:53,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:53,908 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 15:28:53,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 15:28:53,908 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:53,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:53,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1886374064, now seen corresponding path program 1 times [2024-06-04 15:28:53,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:53,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731120434] [2024-06-04 15:28:53,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:53,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:54,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:54,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731120434] [2024-06-04 15:28:54,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731120434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:54,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:54,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:28:54,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182711435] [2024-06-04 15:28:54,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:54,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:28:54,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:54,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:28:54,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:28:54,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:54,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 144 transitions, 1423 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:54,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:54,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:54,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:55,319 INFO L124 PetriNetUnfolderBase]: 439/850 cut-off events. [2024-06-04 15:28:55,319 INFO L125 PetriNetUnfolderBase]: For 65439/65439 co-relation queries the response was YES. [2024-06-04 15:28:55,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5802 conditions, 850 events. 439/850 cut-off events. For 65439/65439 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4342 event pairs, 100 based on Foata normal form. 2/852 useless extension candidates. Maximal degree in co-relation 5719. Up to 721 conditions per place. [2024-06-04 15:28:55,325 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 29 changer transitions 0/162 dead transitions. [2024-06-04 15:28:55,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 162 transitions, 1791 flow [2024-06-04 15:28:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:55,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 15:28:55,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-04 15:28:55,326 INFO L175 Difference]: Start difference. First operand has 198 places, 144 transitions, 1423 flow. Second operand 12 states and 132 transitions. [2024-06-04 15:28:55,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 162 transitions, 1791 flow [2024-06-04 15:28:55,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 162 transitions, 1591 flow, removed 3 selfloop flow, removed 17 redundant places. [2024-06-04 15:28:55,418 INFO L231 Difference]: Finished difference. Result has 188 places, 145 transitions, 1295 flow [2024-06-04 15:28:55,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1295, PETRI_PLACES=188, PETRI_TRANSITIONS=145} [2024-06-04 15:28:55,418 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-04 15:28:55,418 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 145 transitions, 1295 flow [2024-06-04 15:28:55,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:55,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:55,418 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 15:28:55,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 15:28:55,418 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:55,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:55,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1033990568, now seen corresponding path program 13 times [2024-06-04 15:28:55,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:55,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991823406] [2024-06-04 15:28:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:55,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:56,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:56,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991823406] [2024-06-04 15:28:56,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991823406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:56,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:56,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:56,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048863788] [2024-06-04 15:28:56,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:56,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:56,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:56,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:56,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:56,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:56,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 145 transitions, 1295 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:56,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:56,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:56,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:56,639 INFO L124 PetriNetUnfolderBase]: 455/886 cut-off events. [2024-06-04 15:28:56,639 INFO L125 PetriNetUnfolderBase]: For 77100/77100 co-relation queries the response was YES. [2024-06-04 15:28:56,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5785 conditions, 886 events. 455/886 cut-off events. For 77100/77100 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4630 event pairs, 100 based on Foata normal form. 10/896 useless extension candidates. Maximal degree in co-relation 5707. Up to 698 conditions per place. [2024-06-04 15:28:56,644 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 30 changer transitions 11/166 dead transitions. [2024-06-04 15:28:56,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 166 transitions, 1703 flow [2024-06-04 15:28:56,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:56,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 15:28:56,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-04 15:28:56,645 INFO L175 Difference]: Start difference. First operand has 188 places, 145 transitions, 1295 flow. Second operand 11 states and 132 transitions. [2024-06-04 15:28:56,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 166 transitions, 1703 flow [2024-06-04 15:28:56,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 166 transitions, 1641 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:56,726 INFO L231 Difference]: Finished difference. Result has 189 places, 142 transitions, 1266 flow [2024-06-04 15:28:56,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1266, PETRI_PLACES=189, PETRI_TRANSITIONS=142} [2024-06-04 15:28:56,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-04 15:28:56,727 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 142 transitions, 1266 flow [2024-06-04 15:28:56,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:56,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:56,727 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 15:28:56,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 15:28:56,727 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:56,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:56,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1173905686, now seen corresponding path program 14 times [2024-06-04 15:28:56,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:56,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820133664] [2024-06-04 15:28:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:56,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:57,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:57,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820133664] [2024-06-04 15:28:57,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820133664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:57,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:57,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:28:57,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568563202] [2024-06-04 15:28:57,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:57,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:28:57,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:57,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:28:57,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:28:57,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:57,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 142 transitions, 1266 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:57,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:57,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:57,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:58,044 INFO L124 PetriNetUnfolderBase]: 472/925 cut-off events. [2024-06-04 15:28:58,045 INFO L125 PetriNetUnfolderBase]: For 92625/92625 co-relation queries the response was YES. [2024-06-04 15:28:58,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6496 conditions, 925 events. 472/925 cut-off events. For 92625/92625 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4917 event pairs, 107 based on Foata normal form. 8/933 useless extension candidates. Maximal degree in co-relation 6417. Up to 676 conditions per place. [2024-06-04 15:28:58,050 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 128 selfloop transitions, 32 changer transitions 7/169 dead transitions. [2024-06-04 15:28:58,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 169 transitions, 1824 flow [2024-06-04 15:28:58,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:58,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 15:28:58,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-04 15:28:58,051 INFO L175 Difference]: Start difference. First operand has 189 places, 142 transitions, 1266 flow. Second operand 12 states and 145 transitions. [2024-06-04 15:28:58,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 169 transitions, 1824 flow [2024-06-04 15:28:58,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 169 transitions, 1760 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 15:28:58,174 INFO L231 Difference]: Finished difference. Result has 189 places, 140 transitions, 1246 flow [2024-06-04 15:28:58,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1246, PETRI_PLACES=189, PETRI_TRANSITIONS=140} [2024-06-04 15:28:58,175 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-04 15:28:58,175 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 140 transitions, 1246 flow [2024-06-04 15:28:58,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:58,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:58,175 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 15:28:58,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 15:28:58,175 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:58,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:58,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2094764008, now seen corresponding path program 15 times [2024-06-04 15:28:58,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:58,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260158520] [2024-06-04 15:28:58,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:58,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:59,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:59,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:59,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260158520] [2024-06-04 15:28:59,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260158520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:59,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:59,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:59,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556201971] [2024-06-04 15:28:59,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:59,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:59,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:59,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:59,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:59,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:28:59,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 140 transitions, 1246 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:59,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:59,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:28:59,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:59,512 INFO L124 PetriNetUnfolderBase]: 466/915 cut-off events. [2024-06-04 15:28:59,513 INFO L125 PetriNetUnfolderBase]: For 92609/92609 co-relation queries the response was YES. [2024-06-04 15:28:59,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6452 conditions, 915 events. 466/915 cut-off events. For 92609/92609 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4861 event pairs, 125 based on Foata normal form. 8/923 useless extension candidates. Maximal degree in co-relation 6373. Up to 759 conditions per place. [2024-06-04 15:28:59,518 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 121 selfloop transitions, 23 changer transitions 13/159 dead transitions. [2024-06-04 15:28:59,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 159 transitions, 1622 flow [2024-06-04 15:28:59,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:28:59,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-04 15:28:59,519 INFO L175 Difference]: Start difference. First operand has 189 places, 140 transitions, 1246 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:28:59,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 159 transitions, 1622 flow [2024-06-04 15:28:59,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 159 transitions, 1556 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:59,618 INFO L231 Difference]: Finished difference. Result has 188 places, 136 transitions, 1189 flow [2024-06-04 15:28:59,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1189, PETRI_PLACES=188, PETRI_TRANSITIONS=136} [2024-06-04 15:28:59,619 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-04 15:28:59,619 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 136 transitions, 1189 flow [2024-06-04 15:28:59,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:59,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:59,619 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 15:28:59,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 15:28:59,619 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:59,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:59,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1344603466, now seen corresponding path program 16 times [2024-06-04 15:28:59,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:59,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750161630] [2024-06-04 15:28:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:59,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:00,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:00,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:00,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750161630] [2024-06-04 15:29:00,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750161630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:00,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:00,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:00,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560096658] [2024-06-04 15:29:00,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:00,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:00,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:00,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:00,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:00,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:00,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 136 transitions, 1189 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:00,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:00,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:00,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:00,805 INFO L124 PetriNetUnfolderBase]: 455/894 cut-off events. [2024-06-04 15:29:00,805 INFO L125 PetriNetUnfolderBase]: For 92540/92540 co-relation queries the response was YES. [2024-06-04 15:29:00,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6218 conditions, 894 events. 455/894 cut-off events. For 92540/92540 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4703 event pairs, 112 based on Foata normal form. 10/904 useless extension candidates. Maximal degree in co-relation 6139. Up to 697 conditions per place. [2024-06-04 15:29:00,811 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 32 changer transitions 11/158 dead transitions. [2024-06-04 15:29:00,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 158 transitions, 1583 flow [2024-06-04 15:29:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:00,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:29:00,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-04 15:29:00,812 INFO L175 Difference]: Start difference. First operand has 188 places, 136 transitions, 1189 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:29:00,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 158 transitions, 1583 flow [2024-06-04 15:29:00,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 158 transitions, 1533 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:00,905 INFO L231 Difference]: Finished difference. Result has 184 places, 133 transitions, 1177 flow [2024-06-04 15:29:00,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1177, PETRI_PLACES=184, PETRI_TRANSITIONS=133} [2024-06-04 15:29:00,905 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-04 15:29:00,905 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 133 transitions, 1177 flow [2024-06-04 15:29:00,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:00,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:00,905 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 15:29:00,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 15:29:00,906 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:00,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:00,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1344608116, now seen corresponding path program 17 times [2024-06-04 15:29:00,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:00,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049084675] [2024-06-04 15:29:00,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:00,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:01,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:01,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:01,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049084675] [2024-06-04 15:29:01,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049084675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:01,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:01,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:01,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983034290] [2024-06-04 15:29:01,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:01,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:01,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:01,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:01,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:01,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:01,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 133 transitions, 1177 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:01,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:01,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:01,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:02,098 INFO L124 PetriNetUnfolderBase]: 443/874 cut-off events. [2024-06-04 15:29:02,098 INFO L125 PetriNetUnfolderBase]: For 86103/86103 co-relation queries the response was YES. [2024-06-04 15:29:02,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6085 conditions, 874 events. 443/874 cut-off events. For 86103/86103 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4595 event pairs, 108 based on Foata normal form. 8/882 useless extension candidates. Maximal degree in co-relation 6007. Up to 687 conditions per place. [2024-06-04 15:29:02,103 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 30 changer transitions 11/154 dead transitions. [2024-06-04 15:29:02,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 154 transitions, 1547 flow [2024-06-04 15:29:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:02,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:02,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 15:29:02,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-04 15:29:02,105 INFO L175 Difference]: Start difference. First operand has 184 places, 133 transitions, 1177 flow. Second operand 11 states and 132 transitions. [2024-06-04 15:29:02,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 154 transitions, 1547 flow [2024-06-04 15:29:02,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 154 transitions, 1481 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:02,200 INFO L231 Difference]: Finished difference. Result has 183 places, 130 transitions, 1144 flow [2024-06-04 15:29:02,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1144, PETRI_PLACES=183, PETRI_TRANSITIONS=130} [2024-06-04 15:29:02,200 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-04 15:29:02,200 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 130 transitions, 1144 flow [2024-06-04 15:29:02,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:02,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:02,201 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 15:29:02,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 15:29:02,201 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:02,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:02,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1344723436, now seen corresponding path program 18 times [2024-06-04 15:29:02,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:02,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284480581] [2024-06-04 15:29:02,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:02,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:02,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:02,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284480581] [2024-06-04 15:29:02,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284480581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:02,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:02,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:02,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894530475] [2024-06-04 15:29:02,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:02,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:02,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:02,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:02,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:02,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:02,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 130 transitions, 1144 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:02,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:02,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:02,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:03,344 INFO L124 PetriNetUnfolderBase]: 414/815 cut-off events. [2024-06-04 15:29:03,344 INFO L125 PetriNetUnfolderBase]: For 74050/74050 co-relation queries the response was YES. [2024-06-04 15:29:03,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5427 conditions, 815 events. 414/815 cut-off events. For 74050/74050 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4165 event pairs, 88 based on Foata normal form. 8/823 useless extension candidates. Maximal degree in co-relation 5349. Up to 558 conditions per place. [2024-06-04 15:29:03,349 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 116 selfloop transitions, 27 changer transitions 12/157 dead transitions. [2024-06-04 15:29:03,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 157 transitions, 1676 flow [2024-06-04 15:29:03,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 15:29:03,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-04 15:29:03,350 INFO L175 Difference]: Start difference. First operand has 183 places, 130 transitions, 1144 flow. Second operand 11 states and 137 transitions. [2024-06-04 15:29:03,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 157 transitions, 1676 flow [2024-06-04 15:29:03,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 157 transitions, 1602 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:29:03,443 INFO L231 Difference]: Finished difference. Result has 179 places, 125 transitions, 1083 flow [2024-06-04 15:29:03,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1083, PETRI_PLACES=179, PETRI_TRANSITIONS=125} [2024-06-04 15:29:03,443 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-04 15:29:03,444 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 125 transitions, 1083 flow [2024-06-04 15:29:03,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:03,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:03,444 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 15:29:03,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 15:29:03,444 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:03,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:03,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1173901036, now seen corresponding path program 19 times [2024-06-04 15:29:03,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:03,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884355876] [2024-06-04 15:29:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:03,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:04,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:04,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884355876] [2024-06-04 15:29:04,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884355876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:04,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:04,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:04,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589621167] [2024-06-04 15:29:04,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:04,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:04,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:04,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:04,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:04,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:04,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 125 transitions, 1083 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:04,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:04,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:04,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:04,725 INFO L124 PetriNetUnfolderBase]: 377/740 cut-off events. [2024-06-04 15:29:04,725 INFO L125 PetriNetUnfolderBase]: For 59753/59753 co-relation queries the response was YES. [2024-06-04 15:29:04,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 740 events. 377/740 cut-off events. For 59753/59753 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3660 event pairs, 75 based on Foata normal form. 10/750 useless extension candidates. Maximal degree in co-relation 4475. Up to 558 conditions per place. [2024-06-04 15:29:04,729 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 105 selfloop transitions, 25 changer transitions 15/147 dead transitions. [2024-06-04 15:29:04,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 147 transitions, 1455 flow [2024-06-04 15:29:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:29:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:29:04,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 15:29:04,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-04 15:29:04,730 INFO L175 Difference]: Start difference. First operand has 179 places, 125 transitions, 1083 flow. Second operand 12 states and 136 transitions. [2024-06-04 15:29:04,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 147 transitions, 1455 flow [2024-06-04 15:29:04,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 147 transitions, 1379 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 15:29:04,813 INFO L231 Difference]: Finished difference. Result has 175 places, 120 transitions, 1011 flow [2024-06-04 15:29:04,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1011, PETRI_PLACES=175, PETRI_TRANSITIONS=120} [2024-06-04 15:29:04,813 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-04 15:29:04,813 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 120 transitions, 1011 flow [2024-06-04 15:29:04,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:04,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:04,814 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 15:29:04,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 15:29:04,814 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:04,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:04,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1721317622, now seen corresponding path program 20 times [2024-06-04 15:29:04,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:04,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890030347] [2024-06-04 15:29:04,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:04,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:05,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:05,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890030347] [2024-06-04 15:29:05,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890030347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:05,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:05,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:05,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259901092] [2024-06-04 15:29:05,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:05,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:05,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:05,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:05,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:05,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:05,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 120 transitions, 1011 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:05,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:05,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:05,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:05,899 INFO L124 PetriNetUnfolderBase]: 393/780 cut-off events. [2024-06-04 15:29:05,900 INFO L125 PetriNetUnfolderBase]: For 73608/73608 co-relation queries the response was YES. [2024-06-04 15:29:05,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5239 conditions, 780 events. 393/780 cut-off events. For 73608/73608 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3924 event pairs, 95 based on Foata normal form. 8/788 useless extension candidates. Maximal degree in co-relation 5164. Up to 276 conditions per place. [2024-06-04 15:29:05,904 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 78 selfloop transitions, 51 changer transitions 13/144 dead transitions. [2024-06-04 15:29:05,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 144 transitions, 1491 flow [2024-06-04 15:29:05,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:29:05,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:29:05,905 INFO L175 Difference]: Start difference. First operand has 175 places, 120 transitions, 1011 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:29:05,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 144 transitions, 1491 flow [2024-06-04 15:29:05,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 144 transitions, 1378 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:29:05,991 INFO L231 Difference]: Finished difference. Result has 164 places, 117 transitions, 988 flow [2024-06-04 15:29:05,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=988, PETRI_PLACES=164, PETRI_TRANSITIONS=117} [2024-06-04 15:29:05,991 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-04 15:29:05,991 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 117 transitions, 988 flow [2024-06-04 15:29:05,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:05,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:05,991 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 15:29:05,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 15:29:05,991 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:05,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:05,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1779530042, now seen corresponding path program 21 times [2024-06-04 15:29:05,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:05,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131489115] [2024-06-04 15:29:05,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:05,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:06,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:06,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131489115] [2024-06-04 15:29:06,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131489115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:06,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:06,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:06,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268246374] [2024-06-04 15:29:06,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:06,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:06,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:06,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:06,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:06,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:06,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 117 transitions, 988 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:06,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:06,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:06,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:07,044 INFO L124 PetriNetUnfolderBase]: 385/768 cut-off events. [2024-06-04 15:29:07,044 INFO L125 PetriNetUnfolderBase]: For 76662/76662 co-relation queries the response was YES. [2024-06-04 15:29:07,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5256 conditions, 768 events. 385/768 cut-off events. For 76662/76662 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3880 event pairs, 105 based on Foata normal form. 10/778 useless extension candidates. Maximal degree in co-relation 5181. Up to 504 conditions per place. [2024-06-04 15:29:07,048 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 51 changer transitions 12/137 dead transitions. [2024-06-04 15:29:07,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 137 transitions, 1336 flow [2024-06-04 15:29:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:29:07,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-04 15:29:07,050 INFO L175 Difference]: Start difference. First operand has 164 places, 117 transitions, 988 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:29:07,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 137 transitions, 1336 flow [2024-06-04 15:29:07,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 137 transitions, 1257 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:07,149 INFO L231 Difference]: Finished difference. Result has 161 places, 114 transitions, 992 flow [2024-06-04 15:29:07,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=992, PETRI_PLACES=161, PETRI_TRANSITIONS=114} [2024-06-04 15:29:07,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-04 15:29:07,150 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 114 transitions, 992 flow [2024-06-04 15:29:07,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:07,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:07,150 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 15:29:07,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 15:29:07,150 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:07,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:07,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1779410072, now seen corresponding path program 22 times [2024-06-04 15:29:07,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:07,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653815920] [2024-06-04 15:29:07,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:07,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:07,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:07,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653815920] [2024-06-04 15:29:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653815920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:07,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:07,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:07,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412243856] [2024-06-04 15:29:07,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:07,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:07,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:07,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:07,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:07,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 114 transitions, 992 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:07,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:07,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:07,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:08,239 INFO L124 PetriNetUnfolderBase]: 407/818 cut-off events. [2024-06-04 15:29:08,239 INFO L125 PetriNetUnfolderBase]: For 79053/79053 co-relation queries the response was YES. [2024-06-04 15:29:08,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5787 conditions, 818 events. 407/818 cut-off events. For 79053/79053 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4243 event pairs, 119 based on Foata normal form. 8/826 useless extension candidates. Maximal degree in co-relation 5714. Up to 500 conditions per place. [2024-06-04 15:29:08,244 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 79 selfloop transitions, 49 changer transitions 11/141 dead transitions. [2024-06-04 15:29:08,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 141 transitions, 1482 flow [2024-06-04 15:29:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 15:29:08,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-04 15:29:08,245 INFO L175 Difference]: Start difference. First operand has 161 places, 114 transitions, 992 flow. Second operand 10 states and 126 transitions. [2024-06-04 15:29:08,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 141 transitions, 1482 flow [2024-06-04 15:29:08,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 141 transitions, 1372 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:08,329 INFO L231 Difference]: Finished difference. Result has 161 places, 113 transitions, 981 flow [2024-06-04 15:29:08,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=981, PETRI_PLACES=161, PETRI_TRANSITIONS=113} [2024-06-04 15:29:08,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-04 15:29:08,330 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 113 transitions, 981 flow [2024-06-04 15:29:08,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:08,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:08,330 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 15:29:08,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 15:29:08,330 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:08,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:08,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2028278310, now seen corresponding path program 23 times [2024-06-04 15:29:08,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:08,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792732693] [2024-06-04 15:29:08,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:08,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:09,081 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 15:29:09,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:09,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792732693] [2024-06-04 15:29:09,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792732693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:09,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:09,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:09,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153343338] [2024-06-04 15:29:09,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:09,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:09,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:09,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:09,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:09,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:09,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 113 transitions, 981 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:09,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:09,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:09,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:09,481 INFO L124 PetriNetUnfolderBase]: 375/754 cut-off events. [2024-06-04 15:29:09,481 INFO L125 PetriNetUnfolderBase]: For 65718/65718 co-relation queries the response was YES. [2024-06-04 15:29:09,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5120 conditions, 754 events. 375/754 cut-off events. For 65718/65718 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3807 event pairs, 101 based on Foata normal form. 8/762 useless extension candidates. Maximal degree in co-relation 5046. Up to 500 conditions per place. [2024-06-04 15:29:09,485 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 69 selfloop transitions, 47 changer transitions 15/133 dead transitions. [2024-06-04 15:29:09,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 133 transitions, 1311 flow [2024-06-04 15:29:09,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 15:29:09,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-04 15:29:09,486 INFO L175 Difference]: Start difference. First operand has 161 places, 113 transitions, 981 flow. Second operand 10 states and 119 transitions. [2024-06-04 15:29:09,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 133 transitions, 1311 flow [2024-06-04 15:29:09,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 133 transitions, 1207 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:09,576 INFO L231 Difference]: Finished difference. Result has 161 places, 110 transitions, 952 flow [2024-06-04 15:29:09,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=952, PETRI_PLACES=161, PETRI_TRANSITIONS=110} [2024-06-04 15:29:09,576 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-04 15:29:09,576 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 110 transitions, 952 flow [2024-06-04 15:29:09,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:09,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:09,577 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 15:29:09,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 15:29:09,577 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:09,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:09,577 INFO L85 PathProgramCache]: Analyzing trace with hash 663636450, now seen corresponding path program 24 times [2024-06-04 15:29:09,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:09,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130500365] [2024-06-04 15:29:09,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:09,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:10,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:10,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130500365] [2024-06-04 15:29:10,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130500365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:10,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:10,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:10,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361700076] [2024-06-04 15:29:10,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:10,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:10,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:10,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:10,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:10,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:10,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 110 transitions, 952 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:10,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:10,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:10,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:10,690 INFO L124 PetriNetUnfolderBase]: 400/805 cut-off events. [2024-06-04 15:29:10,690 INFO L125 PetriNetUnfolderBase]: For 78942/78942 co-relation queries the response was YES. [2024-06-04 15:29:10,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5813 conditions, 805 events. 400/805 cut-off events. For 78942/78942 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4161 event pairs, 110 based on Foata normal form. 8/813 useless extension candidates. Maximal degree in co-relation 5740. Up to 565 conditions per place. [2024-06-04 15:29:10,694 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 31 changer transitions 8/135 dead transitions. [2024-06-04 15:29:10,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 135 transitions, 1432 flow [2024-06-04 15:29:10,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 15:29:10,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-04 15:29:10,695 INFO L175 Difference]: Start difference. First operand has 161 places, 110 transitions, 952 flow. Second operand 10 states and 127 transitions. [2024-06-04 15:29:10,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 135 transitions, 1432 flow [2024-06-04 15:29:10,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 135 transitions, 1322 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:10,767 INFO L231 Difference]: Finished difference. Result has 156 places, 109 transitions, 907 flow [2024-06-04 15:29:10,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=907, PETRI_PLACES=156, PETRI_TRANSITIONS=109} [2024-06-04 15:29:10,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-04 15:29:10,767 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 109 transitions, 907 flow [2024-06-04 15:29:10,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:10,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:10,767 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 15:29:10,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 15:29:10,767 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:10,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:10,768 INFO L85 PathProgramCache]: Analyzing trace with hash 663641100, now seen corresponding path program 25 times [2024-06-04 15:29:10,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:10,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284680472] [2024-06-04 15:29:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:10,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:11,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:11,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:11,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284680472] [2024-06-04 15:29:11,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284680472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:11,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:11,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:11,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130276141] [2024-06-04 15:29:11,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:11,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:11,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:11,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:11,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:11,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:11,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 109 transitions, 907 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:11,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:11,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:11,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:11,886 INFO L124 PetriNetUnfolderBase]: 369/744 cut-off events. [2024-06-04 15:29:11,886 INFO L125 PetriNetUnfolderBase]: For 63301/63301 co-relation queries the response was YES. [2024-06-04 15:29:11,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4944 conditions, 744 events. 369/744 cut-off events. For 63301/63301 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3763 event pairs, 101 based on Foata normal form. 10/754 useless extension candidates. Maximal degree in co-relation 4873. Up to 565 conditions per place. [2024-06-04 15:29:11,891 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 84 selfloop transitions, 28 changer transitions 14/128 dead transitions. [2024-06-04 15:29:11,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 128 transitions, 1233 flow [2024-06-04 15:29:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:11,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 15:29:11,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-04 15:29:11,891 INFO L175 Difference]: Start difference. First operand has 156 places, 109 transitions, 907 flow. Second operand 10 states and 121 transitions. [2024-06-04 15:29:11,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 128 transitions, 1233 flow [2024-06-04 15:29:11,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 128 transitions, 1167 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:11,970 INFO L231 Difference]: Finished difference. Result has 156 places, 105 transitions, 864 flow [2024-06-04 15:29:11,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=864, PETRI_PLACES=156, PETRI_TRANSITIONS=105} [2024-06-04 15:29:11,971 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-04 15:29:11,971 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 105 transitions, 864 flow [2024-06-04 15:29:11,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:11,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:11,971 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 15:29:11,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 15:29:11,971 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:11,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:11,972 INFO L85 PathProgramCache]: Analyzing trace with hash 659052480, now seen corresponding path program 26 times [2024-06-04 15:29:11,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:11,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756347387] [2024-06-04 15:29:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:11,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:12,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:12,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:12,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756347387] [2024-06-04 15:29:12,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756347387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:12,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:12,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:12,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900617084] [2024-06-04 15:29:12,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:12,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:12,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:12,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:12,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:12,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:12,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 105 transitions, 864 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:12,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:12,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:12,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:13,129 INFO L124 PetriNetUnfolderBase]: 385/780 cut-off events. [2024-06-04 15:29:13,129 INFO L125 PetriNetUnfolderBase]: For 72852/72852 co-relation queries the response was YES. [2024-06-04 15:29:13,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5533 conditions, 780 events. 385/780 cut-off events. For 72852/72852 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4023 event pairs, 114 based on Foata normal form. 8/788 useless extension candidates. Maximal degree in co-relation 5463. Up to 519 conditions per place. [2024-06-04 15:29:13,133 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 88 selfloop transitions, 29 changer transitions 11/130 dead transitions. [2024-06-04 15:29:13,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 130 transitions, 1324 flow [2024-06-04 15:29:13,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:13,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:13,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-04 15:29:13,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-04 15:29:13,133 INFO L175 Difference]: Start difference. First operand has 156 places, 105 transitions, 864 flow. Second operand 10 states and 129 transitions. [2024-06-04 15:29:13,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 130 transitions, 1324 flow [2024-06-04 15:29:13,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 130 transitions, 1246 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:13,201 INFO L231 Difference]: Finished difference. Result has 151 places, 102 transitions, 838 flow [2024-06-04 15:29:13,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=838, PETRI_PLACES=151, PETRI_TRANSITIONS=102} [2024-06-04 15:29:13,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-04 15:29:13,202 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 102 transitions, 838 flow [2024-06-04 15:29:13,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:13,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:13,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:13,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 15:29:13,202 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:13,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:13,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1951333122, now seen corresponding path program 27 times [2024-06-04 15:29:13,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:13,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147031638] [2024-06-04 15:29:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:13,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:13,963 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 15:29:13,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:13,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147031638] [2024-06-04 15:29:13,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147031638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:13,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:13,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:13,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314730602] [2024-06-04 15:29:13,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:13,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:13,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:13,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:13,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:14,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:14,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 102 transitions, 838 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:14,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:14,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:14,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:14,309 INFO L124 PetriNetUnfolderBase]: 375/762 cut-off events. [2024-06-04 15:29:14,309 INFO L125 PetriNetUnfolderBase]: For 67465/67465 co-relation queries the response was YES. [2024-06-04 15:29:14,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5307 conditions, 762 events. 375/762 cut-off events. For 67465/67465 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3915 event pairs, 118 based on Foata normal form. 8/770 useless extension candidates. Maximal degree in co-relation 5239. Up to 541 conditions per place. [2024-06-04 15:29:14,313 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 90 selfloop transitions, 25 changer transitions 8/125 dead transitions. [2024-06-04 15:29:14,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 125 transitions, 1274 flow [2024-06-04 15:29:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:29:14,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:29:14,314 INFO L175 Difference]: Start difference. First operand has 151 places, 102 transitions, 838 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:29:14,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 125 transitions, 1274 flow [2024-06-04 15:29:14,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 125 transitions, 1207 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:14,364 INFO L231 Difference]: Finished difference. Result has 148 places, 100 transitions, 812 flow [2024-06-04 15:29:14,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=812, PETRI_PLACES=148, PETRI_TRANSITIONS=100} [2024-06-04 15:29:14,364 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-04 15:29:14,364 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 100 transitions, 812 flow [2024-06-04 15:29:14,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:14,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:14,365 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 15:29:14,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 15:29:14,365 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:14,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:14,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1951328472, now seen corresponding path program 28 times [2024-06-04 15:29:14,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:14,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966050519] [2024-06-04 15:29:14,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:14,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:15,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:15,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966050519] [2024-06-04 15:29:15,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966050519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:15,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:15,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:15,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962310368] [2024-06-04 15:29:15,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:15,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:15,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:15,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:15,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:15,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:15,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 100 transitions, 812 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:15,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:15,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:15,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:15,462 INFO L124 PetriNetUnfolderBase]: 344/701 cut-off events. [2024-06-04 15:29:15,462 INFO L125 PetriNetUnfolderBase]: For 53749/53749 co-relation queries the response was YES. [2024-06-04 15:29:15,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4533 conditions, 701 events. 344/701 cut-off events. For 53749/53749 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3506 event pairs, 99 based on Foata normal form. 10/711 useless extension candidates. Maximal degree in co-relation 4467. Up to 519 conditions per place. [2024-06-04 15:29:15,466 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 75 selfloop transitions, 24 changer transitions 18/119 dead transitions. [2024-06-04 15:29:15,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 119 transitions, 1116 flow [2024-06-04 15:29:15,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:15,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:15,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 15:29:15,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-04 15:29:15,466 INFO L175 Difference]: Start difference. First operand has 148 places, 100 transitions, 812 flow. Second operand 10 states and 120 transitions. [2024-06-04 15:29:15,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 119 transitions, 1116 flow [2024-06-04 15:29:15,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 119 transitions, 1020 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:29:15,522 INFO L231 Difference]: Finished difference. Result has 147 places, 93 transitions, 716 flow [2024-06-04 15:29:15,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=716, PETRI_PLACES=147, PETRI_TRANSITIONS=93} [2024-06-04 15:29:15,522 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-04 15:29:15,522 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 93 transitions, 716 flow [2024-06-04 15:29:15,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:15,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:15,522 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 15:29:15,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 15:29:15,523 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:15,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:15,523 INFO L85 PathProgramCache]: Analyzing trace with hash -215282846, now seen corresponding path program 29 times [2024-06-04 15:29:15,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:15,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116121791] [2024-06-04 15:29:15,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:15,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:16,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:16,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116121791] [2024-06-04 15:29:16,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116121791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:16,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:16,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:16,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650140746] [2024-06-04 15:29:16,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:16,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:16,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:16,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:16,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:16,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:16,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 93 transitions, 716 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:16,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:16,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:16,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:16,610 INFO L124 PetriNetUnfolderBase]: 304/613 cut-off events. [2024-06-04 15:29:16,610 INFO L125 PetriNetUnfolderBase]: For 51280/51280 co-relation queries the response was YES. [2024-06-04 15:29:16,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4096 conditions, 613 events. 304/613 cut-off events. For 51280/51280 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2900 event pairs, 101 based on Foata normal form. 8/621 useless extension candidates. Maximal degree in co-relation 4031. Up to 299 conditions per place. [2024-06-04 15:29:16,613 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 36 changer transitions 10/115 dead transitions. [2024-06-04 15:29:16,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 115 transitions, 1122 flow [2024-06-04 15:29:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 15:29:16,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-04 15:29:16,614 INFO L175 Difference]: Start difference. First operand has 147 places, 93 transitions, 716 flow. Second operand 10 states and 119 transitions. [2024-06-04 15:29:16,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 115 transitions, 1122 flow [2024-06-04 15:29:16,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 115 transitions, 1019 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-04 15:29:16,659 INFO L231 Difference]: Finished difference. Result has 136 places, 90 transitions, 679 flow [2024-06-04 15:29:16,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=679, PETRI_PLACES=136, PETRI_TRANSITIONS=90} [2024-06-04 15:29:16,659 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-04 15:29:16,659 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 90 transitions, 679 flow [2024-06-04 15:29:16,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:16,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:16,660 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 15:29:16,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 15:29:16,660 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:16,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:16,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1646680972, now seen corresponding path program 2 times [2024-06-04 15:29:16,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:16,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540615084] [2024-06-04 15:29:16,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:16,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:17,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:17,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540615084] [2024-06-04 15:29:17,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540615084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:17,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:17,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:17,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122597387] [2024-06-04 15:29:17,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:17,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:17,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:17,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:17,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:17,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:17,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 90 transitions, 679 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:17,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:17,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:17,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:17,989 INFO L124 PetriNetUnfolderBase]: 292/585 cut-off events. [2024-06-04 15:29:17,990 INFO L125 PetriNetUnfolderBase]: For 39609/39609 co-relation queries the response was YES. [2024-06-04 15:29:17,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3895 conditions, 585 events. 292/585 cut-off events. For 39609/39609 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2707 event pairs, 82 based on Foata normal form. 2/587 useless extension candidates. Maximal degree in co-relation 3833. Up to 451 conditions per place. [2024-06-04 15:29:17,993 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 77 selfloop transitions, 32 changer transitions 0/111 dead transitions. [2024-06-04 15:29:17,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 111 transitions, 967 flow [2024-06-04 15:29:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 15:29:17,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-04 15:29:17,993 INFO L175 Difference]: Start difference. First operand has 136 places, 90 transitions, 679 flow. Second operand 11 states and 120 transitions. [2024-06-04 15:29:17,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 111 transitions, 967 flow [2024-06-04 15:29:18,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 111 transitions, 904 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:18,028 INFO L231 Difference]: Finished difference. Result has 136 places, 96 transitions, 757 flow [2024-06-04 15:29:18,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=757, PETRI_PLACES=136, PETRI_TRANSITIONS=96} [2024-06-04 15:29:18,028 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-04 15:29:18,028 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 96 transitions, 757 flow [2024-06-04 15:29:18,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:18,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:18,029 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 15:29:18,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 15:29:18,029 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:18,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:18,029 INFO L85 PathProgramCache]: Analyzing trace with hash -210698876, now seen corresponding path program 30 times [2024-06-04 15:29:18,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:18,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98648734] [2024-06-04 15:29:18,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:18,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:18,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:18,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98648734] [2024-06-04 15:29:18,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98648734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:18,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:18,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:18,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575446797] [2024-06-04 15:29:18,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:18,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:18,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:18,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:18,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:18,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:18,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 96 transitions, 757 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:18,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:18,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:18,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:19,073 INFO L124 PetriNetUnfolderBase]: 337/680 cut-off events. [2024-06-04 15:29:19,073 INFO L125 PetriNetUnfolderBase]: For 48745/48745 co-relation queries the response was YES. [2024-06-04 15:29:19,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4668 conditions, 680 events. 337/680 cut-off events. For 48745/48745 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3387 event pairs, 106 based on Foata normal form. 8/688 useless extension candidates. Maximal degree in co-relation 4606. Up to 453 conditions per place. [2024-06-04 15:29:19,077 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 77 selfloop transitions, 33 changer transitions 7/119 dead transitions. [2024-06-04 15:29:19,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 119 transitions, 1174 flow [2024-06-04 15:29:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:19,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 15:29:19,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-04 15:29:19,078 INFO L175 Difference]: Start difference. First operand has 136 places, 96 transitions, 757 flow. Second operand 10 states and 122 transitions. [2024-06-04 15:29:19,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 119 transitions, 1174 flow [2024-06-04 15:29:19,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 119 transitions, 1126 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:19,128 INFO L231 Difference]: Finished difference. Result has 140 places, 95 transitions, 773 flow [2024-06-04 15:29:19,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=773, PETRI_PLACES=140, PETRI_TRANSITIONS=95} [2024-06-04 15:29:19,129 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-04 15:29:19,129 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 95 transitions, 773 flow [2024-06-04 15:29:19,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:19,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:19,129 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 15:29:19,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 15:29:19,129 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:19,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash 641772038, now seen corresponding path program 31 times [2024-06-04 15:29:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:19,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388603347] [2024-06-04 15:29:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:19,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:19,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:19,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388603347] [2024-06-04 15:29:19,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388603347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:19,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:19,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:19,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826575906] [2024-06-04 15:29:19,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:19,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:19,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:19,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:19,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:19,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:19,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 95 transitions, 773 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:19,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:19,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:19,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:20,242 INFO L124 PetriNetUnfolderBase]: 360/729 cut-off events. [2024-06-04 15:29:20,242 INFO L125 PetriNetUnfolderBase]: For 57407/57407 co-relation queries the response was YES. [2024-06-04 15:29:20,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5248 conditions, 729 events. 360/729 cut-off events. For 57407/57407 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3743 event pairs, 123 based on Foata normal form. 8/737 useless extension candidates. Maximal degree in co-relation 5183. Up to 502 conditions per place. [2024-06-04 15:29:20,247 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 77 selfloop transitions, 32 changer transitions 7/118 dead transitions. [2024-06-04 15:29:20,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 118 transitions, 1187 flow [2024-06-04 15:29:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:20,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 15:29:20,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-04 15:29:20,247 INFO L175 Difference]: Start difference. First operand has 140 places, 95 transitions, 773 flow. Second operand 11 states and 132 transitions. [2024-06-04 15:29:20,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 118 transitions, 1187 flow [2024-06-04 15:29:20,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 118 transitions, 1115 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:20,283 INFO L231 Difference]: Finished difference. Result has 141 places, 93 transitions, 756 flow [2024-06-04 15:29:20,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=756, PETRI_PLACES=141, PETRI_TRANSITIONS=93} [2024-06-04 15:29:20,283 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-04 15:29:20,283 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 93 transitions, 756 flow [2024-06-04 15:29:20,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:20,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:20,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:20,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 15:29:20,284 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:20,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:20,284 INFO L85 PathProgramCache]: Analyzing trace with hash -531624040, now seen corresponding path program 32 times [2024-06-04 15:29:20,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:20,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491492735] [2024-06-04 15:29:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:20,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:21,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:21,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491492735] [2024-06-04 15:29:21,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491492735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:21,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:21,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:21,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301637305] [2024-06-04 15:29:21,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:21,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:21,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:21,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:21,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:21,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 93 transitions, 756 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:21,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:21,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:21,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:21,493 INFO L124 PetriNetUnfolderBase]: 329/668 cut-off events. [2024-06-04 15:29:21,493 INFO L125 PetriNetUnfolderBase]: For 51022/51022 co-relation queries the response was YES. [2024-06-04 15:29:21,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4631 conditions, 668 events. 329/668 cut-off events. For 51022/51022 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3309 event pairs, 112 based on Foata normal form. 10/678 useless extension candidates. Maximal degree in co-relation 4567. Up to 502 conditions per place. [2024-06-04 15:29:21,497 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 66 selfloop transitions, 28 changer transitions 15/111 dead transitions. [2024-06-04 15:29:21,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 111 transitions, 1046 flow [2024-06-04 15:29:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:21,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:21,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 15:29:21,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-04 15:29:21,498 INFO L175 Difference]: Start difference. First operand has 141 places, 93 transitions, 756 flow. Second operand 11 states and 126 transitions. [2024-06-04 15:29:21,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 111 transitions, 1046 flow [2024-06-04 15:29:21,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 111 transitions, 980 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:29:21,531 INFO L231 Difference]: Finished difference. Result has 140 places, 88 transitions, 709 flow [2024-06-04 15:29:21,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=709, PETRI_PLACES=140, PETRI_TRANSITIONS=88} [2024-06-04 15:29:21,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-04 15:29:21,532 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 88 transitions, 709 flow [2024-06-04 15:29:21,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:21,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:21,532 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 15:29:21,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 15:29:21,533 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:21,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:21,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1473772148, now seen corresponding path program 33 times [2024-06-04 15:29:21,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:21,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073571462] [2024-06-04 15:29:21,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:21,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:22,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:22,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073571462] [2024-06-04 15:29:22,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073571462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:22,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:22,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:22,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020622500] [2024-06-04 15:29:22,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:22,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:22,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:22,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:22,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:22,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:22,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 88 transitions, 709 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:22,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:22,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:22,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:22,554 INFO L124 PetriNetUnfolderBase]: 290/591 cut-off events. [2024-06-04 15:29:22,554 INFO L125 PetriNetUnfolderBase]: For 40729/40729 co-relation queries the response was YES. [2024-06-04 15:29:22,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3882 conditions, 591 events. 290/591 cut-off events. For 40729/40729 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2798 event pairs, 95 based on Foata normal form. 10/601 useless extension candidates. Maximal degree in co-relation 3819. Up to 428 conditions per place. [2024-06-04 15:29:22,557 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 61 selfloop transitions, 27 changer transitions 15/105 dead transitions. [2024-06-04 15:29:22,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 105 transitions, 985 flow [2024-06-04 15:29:22,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:22,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:22,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 15:29:22,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-04 15:29:22,558 INFO L175 Difference]: Start difference. First operand has 140 places, 88 transitions, 709 flow. Second operand 10 states and 116 transitions. [2024-06-04 15:29:22,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 105 transitions, 985 flow [2024-06-04 15:29:22,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 105 transitions, 921 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:29:22,586 INFO L231 Difference]: Finished difference. Result has 132 places, 83 transitions, 663 flow [2024-06-04 15:29:22,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=663, PETRI_PLACES=132, PETRI_TRANSITIONS=83} [2024-06-04 15:29:22,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-04 15:29:22,587 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 83 transitions, 663 flow [2024-06-04 15:29:22,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:22,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:22,587 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 15:29:22,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 15:29:22,587 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:22,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:22,587 INFO L85 PathProgramCache]: Analyzing trace with hash -702331120, now seen corresponding path program 34 times [2024-06-04 15:29:22,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:22,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176003334] [2024-06-04 15:29:22,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:22,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:23,288 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 15:29:23,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:23,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176003334] [2024-06-04 15:29:23,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176003334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:23,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:23,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:23,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617237955] [2024-06-04 15:29:23,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:23,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:23,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:23,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:23,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:23,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:23,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 83 transitions, 663 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:23,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:23,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:23,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:23,631 INFO L124 PetriNetUnfolderBase]: 305/624 cut-off events. [2024-06-04 15:29:23,631 INFO L125 PetriNetUnfolderBase]: For 40069/40069 co-relation queries the response was YES. [2024-06-04 15:29:23,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4203 conditions, 624 events. 305/624 cut-off events. For 40069/40069 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3045 event pairs, 98 based on Foata normal form. 8/632 useless extension candidates. Maximal degree in co-relation 4143. Up to 372 conditions per place. [2024-06-04 15:29:23,635 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 38 changer transitions 7/106 dead transitions. [2024-06-04 15:29:23,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 106 transitions, 1047 flow [2024-06-04 15:29:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:23,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:29:23,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:29:23,636 INFO L175 Difference]: Start difference. First operand has 132 places, 83 transitions, 663 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:29:23,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 106 transitions, 1047 flow [2024-06-04 15:29:23,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 106 transitions, 967 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:23,662 INFO L231 Difference]: Finished difference. Result has 125 places, 81 transitions, 662 flow [2024-06-04 15:29:23,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=662, PETRI_PLACES=125, PETRI_TRANSITIONS=81} [2024-06-04 15:29:23,662 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-04 15:29:23,662 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 81 transitions, 662 flow [2024-06-04 15:29:23,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:23,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:23,662 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 15:29:23,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 15:29:23,663 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:23,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash -702326470, now seen corresponding path program 35 times [2024-06-04 15:29:23,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:23,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422732994] [2024-06-04 15:29:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:23,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:24,404 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 15:29:24,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:24,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422732994] [2024-06-04 15:29:24,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422732994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:24,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:24,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:24,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169585894] [2024-06-04 15:29:24,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:24,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:24,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:24,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:24,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:24,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:24,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 81 transitions, 662 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:24,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:24,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:24,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:24,773 INFO L124 PetriNetUnfolderBase]: 274/563 cut-off events. [2024-06-04 15:29:24,773 INFO L125 PetriNetUnfolderBase]: For 29617/29617 co-relation queries the response was YES. [2024-06-04 15:29:24,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3482 conditions, 563 events. 274/563 cut-off events. For 29617/29617 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2641 event pairs, 89 based on Foata normal form. 10/573 useless extension candidates. Maximal degree in co-relation 3425. Up to 372 conditions per place. [2024-06-04 15:29:24,775 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 49 selfloop transitions, 32 changer transitions 16/99 dead transitions. [2024-06-04 15:29:24,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 99 transitions, 926 flow [2024-06-04 15:29:24,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:24,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 15:29:24,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-04 15:29:24,776 INFO L175 Difference]: Start difference. First operand has 125 places, 81 transitions, 662 flow. Second operand 10 states and 118 transitions. [2024-06-04 15:29:24,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 99 transitions, 926 flow [2024-06-04 15:29:24,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 99 transitions, 848 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:24,798 INFO L231 Difference]: Finished difference. Result has 124 places, 74 transitions, 599 flow [2024-06-04 15:29:24,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=599, PETRI_PLACES=124, PETRI_TRANSITIONS=74} [2024-06-04 15:29:24,798 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-04 15:29:24,798 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 74 transitions, 599 flow [2024-06-04 15:29:24,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:24,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:24,799 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 15:29:24,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 15:29:24,799 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:24,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:24,799 INFO L85 PathProgramCache]: Analyzing trace with hash -843682760, now seen corresponding path program 3 times [2024-06-04 15:29:24,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:24,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608588228] [2024-06-04 15:29:24,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:24,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:25,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:25,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608588228] [2024-06-04 15:29:25,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608588228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:25,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:25,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:25,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538248093] [2024-06-04 15:29:25,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:25,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:25,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:25,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:25,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 74 transitions, 599 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:25,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:25,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:25,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:26,054 INFO L124 PetriNetUnfolderBase]: 249/512 cut-off events. [2024-06-04 15:29:26,054 INFO L125 PetriNetUnfolderBase]: For 23674/23674 co-relation queries the response was YES. [2024-06-04 15:29:26,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3233 conditions, 512 events. 249/512 cut-off events. For 23674/23674 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2320 event pairs, 99 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 3177. Up to 470 conditions per place. [2024-06-04 15:29:26,056 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 71 selfloop transitions, 14 changer transitions 0/87 dead transitions. [2024-06-04 15:29:26,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 87 transitions, 807 flow [2024-06-04 15:29:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:26,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 15:29:26,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-04 15:29:26,060 INFO L175 Difference]: Start difference. First operand has 124 places, 74 transitions, 599 flow. Second operand 10 states and 106 transitions. [2024-06-04 15:29:26,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 87 transitions, 807 flow [2024-06-04 15:29:26,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 87 transitions, 731 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:29:26,080 INFO L231 Difference]: Finished difference. Result has 115 places, 75 transitions, 567 flow [2024-06-04 15:29:26,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=567, PETRI_PLACES=115, PETRI_TRANSITIONS=75} [2024-06-04 15:29:26,080 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-04 15:29:26,080 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 75 transitions, 567 flow [2024-06-04 15:29:26,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:26,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:26,080 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 15:29:26,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 15:29:26,081 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:26,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:26,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1898372440, now seen corresponding path program 36 times [2024-06-04 15:29:26,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:26,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063632090] [2024-06-04 15:29:26,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:26,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:26,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:26,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063632090] [2024-06-04 15:29:26,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063632090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:26,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:26,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:26,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288186656] [2024-06-04 15:29:26,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:26,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:26,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:26,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:26,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:27,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:27,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 75 transitions, 567 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:27,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:27,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:27,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:27,354 INFO L124 PetriNetUnfolderBase]: 290/599 cut-off events. [2024-06-04 15:29:27,354 INFO L125 PetriNetUnfolderBase]: For 24872/24872 co-relation queries the response was YES. [2024-06-04 15:29:27,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3565 conditions, 599 events. 290/599 cut-off events. For 24872/24872 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2936 event pairs, 114 based on Foata normal form. 8/607 useless extension candidates. Maximal degree in co-relation 3513. Up to 432 conditions per place. [2024-06-04 15:29:27,357 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 68 selfloop transitions, 21 changer transitions 7/98 dead transitions. [2024-06-04 15:29:27,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 98 transitions, 909 flow [2024-06-04 15:29:27,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 15:29:27,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-04 15:29:27,358 INFO L175 Difference]: Start difference. First operand has 115 places, 75 transitions, 567 flow. Second operand 11 states and 130 transitions. [2024-06-04 15:29:27,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 98 transitions, 909 flow [2024-06-04 15:29:27,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 98 transitions, 875 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:27,374 INFO L231 Difference]: Finished difference. Result has 118 places, 73 transitions, 564 flow [2024-06-04 15:29:27,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=564, PETRI_PLACES=118, PETRI_TRANSITIONS=73} [2024-06-04 15:29:27,374 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-04 15:29:27,374 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 73 transitions, 564 flow [2024-06-04 15:29:27,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:27,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:27,375 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 15:29:27,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 15:29:27,375 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:27,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:27,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1372819724, now seen corresponding path program 37 times [2024-06-04 15:29:27,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:27,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596258645] [2024-06-04 15:29:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:27,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:28,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:28,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596258645] [2024-06-04 15:29:28,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596258645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:28,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:28,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:28,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372020984] [2024-06-04 15:29:28,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:28,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:28,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:28,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:28,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:28,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:28,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 73 transitions, 564 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:28,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:28,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:28,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:28,478 INFO L124 PetriNetUnfolderBase]: 259/538 cut-off events. [2024-06-04 15:29:28,478 INFO L125 PetriNetUnfolderBase]: For 23172/23172 co-relation queries the response was YES. [2024-06-04 15:29:28,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3130 conditions, 538 events. 259/538 cut-off events. For 23172/23172 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2525 event pairs, 111 based on Foata normal form. 10/548 useless extension candidates. Maximal degree in co-relation 3077. Up to 432 conditions per place. [2024-06-04 15:29:28,480 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 57 selfloop transitions, 17 changer transitions 15/91 dead transitions. [2024-06-04 15:29:28,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 91 transitions, 808 flow [2024-06-04 15:29:28,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:28,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 15:29:28,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 15:29:28,481 INFO L175 Difference]: Start difference. First operand has 118 places, 73 transitions, 564 flow. Second operand 11 states and 124 transitions. [2024-06-04 15:29:28,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 91 transitions, 808 flow [2024-06-04 15:29:28,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 91 transitions, 764 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:29:28,498 INFO L231 Difference]: Finished difference. Result has 117 places, 68 transitions, 517 flow [2024-06-04 15:29:28,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=517, PETRI_PLACES=117, PETRI_TRANSITIONS=68} [2024-06-04 15:29:28,498 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-04 15:29:28,498 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 68 transitions, 517 flow [2024-06-04 15:29:28,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:28,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:28,498 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 15:29:28,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 15:29:28,499 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:28,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:28,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1379494768, now seen corresponding path program 4 times [2024-06-04 15:29:28,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:28,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013834974] [2024-06-04 15:29:28,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:28,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:29,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:29,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013834974] [2024-06-04 15:29:29,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013834974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:29,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:29,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:29,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389162469] [2024-06-04 15:29:29,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:29,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:29,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:29,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:29,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:29,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:29,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 68 transitions, 517 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:29,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:29,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:29,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:29,812 INFO L124 PetriNetUnfolderBase]: 230/479 cut-off events. [2024-06-04 15:29:29,812 INFO L125 PetriNetUnfolderBase]: For 17541/17541 co-relation queries the response was YES. [2024-06-04 15:29:29,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2799 conditions, 479 events. 230/479 cut-off events. For 17541/17541 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2140 event pairs, 104 based on Foata normal form. 2/481 useless extension candidates. Maximal degree in co-relation 2747. Up to 419 conditions per place. [2024-06-04 15:29:29,814 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 63 selfloop transitions, 18 changer transitions 0/83 dead transitions. [2024-06-04 15:29:29,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 83 transitions, 730 flow [2024-06-04 15:29:29,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:29,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 15:29:29,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-04 15:29:29,815 INFO L175 Difference]: Start difference. First operand has 117 places, 68 transitions, 517 flow. Second operand 10 states and 109 transitions. [2024-06-04 15:29:29,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 83 transitions, 730 flow [2024-06-04 15:29:29,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 83 transitions, 682 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 15:29:29,829 INFO L231 Difference]: Finished difference. Result has 110 places, 70 transitions, 540 flow [2024-06-04 15:29:29,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=540, PETRI_PLACES=110, PETRI_TRANSITIONS=70} [2024-06-04 15:29:29,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-04 15:29:29,829 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 70 transitions, 540 flow [2024-06-04 15:29:29,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:29,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:29,830 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 15:29:29,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 15:29:29,830 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:29,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:29,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1204993158, now seen corresponding path program 38 times [2024-06-04 15:29:29,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:29,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785540983] [2024-06-04 15:29:29,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:29,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:30,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:30,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785540983] [2024-06-04 15:29:30,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785540983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:30,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:30,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:30,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390747859] [2024-06-04 15:29:30,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:30,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:30,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:30,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:30,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:30,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:30,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 70 transitions, 540 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:30,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:30,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:30,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:30,964 INFO L124 PetriNetUnfolderBase]: 239/502 cut-off events. [2024-06-04 15:29:30,964 INFO L125 PetriNetUnfolderBase]: For 16348/16348 co-relation queries the response was YES. [2024-06-04 15:29:30,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2681 conditions, 502 events. 239/502 cut-off events. For 16348/16348 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2304 event pairs, 105 based on Foata normal form. 10/512 useless extension candidates. Maximal degree in co-relation 2631. Up to 387 conditions per place. [2024-06-04 15:29:30,966 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 51 selfloop transitions, 25 changer transitions 11/89 dead transitions. [2024-06-04 15:29:30,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 89 transitions, 780 flow [2024-06-04 15:29:30,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:30,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 15:29:30,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-04 15:29:30,967 INFO L175 Difference]: Start difference. First operand has 110 places, 70 transitions, 540 flow. Second operand 11 states and 125 transitions. [2024-06-04 15:29:30,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 89 transitions, 780 flow [2024-06-04 15:29:30,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 89 transitions, 742 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:30,979 INFO L231 Difference]: Finished difference. Result has 114 places, 67 transitions, 533 flow [2024-06-04 15:29:30,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=533, PETRI_PLACES=114, PETRI_TRANSITIONS=67} [2024-06-04 15:29:30,980 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-04 15:29:30,980 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 67 transitions, 533 flow [2024-06-04 15:29:30,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:30,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:30,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:30,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 15:29:30,980 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:30,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:30,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1204997808, now seen corresponding path program 39 times [2024-06-04 15:29:30,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:30,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360035119] [2024-06-04 15:29:30,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:30,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:31,686 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 15:29:31,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360035119] [2024-06-04 15:29:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360035119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:31,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:31,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:31,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455076592] [2024-06-04 15:29:31,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:31,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:31,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:31,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:31,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:31,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:31,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 67 transitions, 533 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:31,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:31,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:31,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:32,035 INFO L124 PetriNetUnfolderBase]: 205/436 cut-off events. [2024-06-04 15:29:32,035 INFO L125 PetriNetUnfolderBase]: For 13867/13867 co-relation queries the response was YES. [2024-06-04 15:29:32,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2291 conditions, 436 events. 205/436 cut-off events. For 13867/13867 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1906 event pairs, 79 based on Foata normal form. 8/444 useless extension candidates. Maximal degree in co-relation 2241. Up to 266 conditions per place. [2024-06-04 15:29:32,036 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 56 selfloop transitions, 22 changer transitions 9/89 dead transitions. [2024-06-04 15:29:32,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 89 transitions, 833 flow [2024-06-04 15:29:32,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:32,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:32,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:29:32,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-04 15:29:32,037 INFO L175 Difference]: Start difference. First operand has 114 places, 67 transitions, 533 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:29:32,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 89 transitions, 833 flow [2024-06-04 15:29:32,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 89 transitions, 775 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:29:32,054 INFO L231 Difference]: Finished difference. Result has 112 places, 63 transitions, 494 flow [2024-06-04 15:29:32,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=494, PETRI_PLACES=112, PETRI_TRANSITIONS=63} [2024-06-04 15:29:32,055 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-04 15:29:32,055 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 63 transitions, 494 flow [2024-06-04 15:29:32,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:32,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:32,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:32,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 15:29:32,055 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:32,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash -444077418, now seen corresponding path program 5 times [2024-06-04 15:29:32,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:32,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632245206] [2024-06-04 15:29:32,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:32,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:32,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:32,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632245206] [2024-06-04 15:29:32,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632245206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:32,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:32,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:32,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805322557] [2024-06-04 15:29:32,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:32,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:32,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:32,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:32,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:33,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:33,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 63 transitions, 494 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:33,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:33,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:33,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:33,383 INFO L124 PetriNetUnfolderBase]: 189/400 cut-off events. [2024-06-04 15:29:33,383 INFO L125 PetriNetUnfolderBase]: For 11091/11091 co-relation queries the response was YES. [2024-06-04 15:29:33,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 400 events. 189/400 cut-off events. For 11091/11091 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1701 event pairs, 83 based on Foata normal form. 2/402 useless extension candidates. Maximal degree in co-relation 2099. Up to 350 conditions per place. [2024-06-04 15:29:33,385 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 21 changer transitions 0/76 dead transitions. [2024-06-04 15:29:33,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 76 transitions, 686 flow [2024-06-04 15:29:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:33,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:33,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 15:29:33,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-04 15:29:33,386 INFO L175 Difference]: Start difference. First operand has 112 places, 63 transitions, 494 flow. Second operand 10 states and 108 transitions. [2024-06-04 15:29:33,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 76 transitions, 686 flow [2024-06-04 15:29:33,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 76 transitions, 634 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:29:33,394 INFO L231 Difference]: Finished difference. Result has 106 places, 64 transitions, 505 flow [2024-06-04 15:29:33,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=505, PETRI_PLACES=106, PETRI_TRANSITIONS=64} [2024-06-04 15:29:33,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-04 15:29:33,395 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 64 transitions, 505 flow [2024-06-04 15:29:33,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:33,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:33,395 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 15:29:33,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 15:29:33,395 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:33,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:33,395 INFO L85 PathProgramCache]: Analyzing trace with hash -976673074, now seen corresponding path program 6 times [2024-06-04 15:29:33,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:33,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840840314] [2024-06-04 15:29:33,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:33,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:34,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:34,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:34,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840840314] [2024-06-04 15:29:34,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840840314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:34,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:34,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:34,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732908130] [2024-06-04 15:29:34,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:34,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:34,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:34,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:34,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:34,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:34,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 64 transitions, 505 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:34,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:34,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:34,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:34,681 INFO L124 PetriNetUnfolderBase]: 193/408 cut-off events. [2024-06-04 15:29:34,682 INFO L125 PetriNetUnfolderBase]: For 9504/9504 co-relation queries the response was YES. [2024-06-04 15:29:34,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2130 conditions, 408 events. 193/408 cut-off events. For 9504/9504 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1747 event pairs, 85 based on Foata normal form. 2/410 useless extension candidates. Maximal degree in co-relation 2083. Up to 342 conditions per place. [2024-06-04 15:29:34,683 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 54 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2024-06-04 15:29:34,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 77 transitions, 697 flow [2024-06-04 15:29:34,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:34,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:34,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 15:29:34,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-04 15:29:34,684 INFO L175 Difference]: Start difference. First operand has 106 places, 64 transitions, 505 flow. Second operand 10 states and 109 transitions. [2024-06-04 15:29:34,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 77 transitions, 697 flow [2024-06-04 15:29:34,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 77 transitions, 640 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:34,693 INFO L231 Difference]: Finished difference. Result has 107 places, 65 transitions, 510 flow [2024-06-04 15:29:34,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=510, PETRI_PLACES=107, PETRI_TRANSITIONS=65} [2024-06-04 15:29:34,693 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-04 15:29:34,693 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 65 transitions, 510 flow [2024-06-04 15:29:34,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:34,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:34,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:34,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 15:29:34,694 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:34,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:34,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1734282868, now seen corresponding path program 40 times [2024-06-04 15:29:34,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:34,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386942987] [2024-06-04 15:29:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:34,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:35,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:35,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386942987] [2024-06-04 15:29:35,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386942987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:35,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:35,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:35,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573326637] [2024-06-04 15:29:35,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:35,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:35,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:35,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:35,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:35,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:35,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 65 transitions, 510 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:35,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:35,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:35,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:35,758 INFO L124 PetriNetUnfolderBase]: 180/385 cut-off events. [2024-06-04 15:29:35,758 INFO L125 PetriNetUnfolderBase]: For 9712/9712 co-relation queries the response was YES. [2024-06-04 15:29:35,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 385 events. 180/385 cut-off events. For 9712/9712 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1618 event pairs, 72 based on Foata normal form. 10/395 useless extension candidates. Maximal degree in co-relation 1781. Up to 291 conditions per place. [2024-06-04 15:29:35,759 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 50 selfloop transitions, 18 changer transitions 12/82 dead transitions. [2024-06-04 15:29:35,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 82 transitions, 718 flow [2024-06-04 15:29:35,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:35,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:35,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 15:29:35,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-04 15:29:35,760 INFO L175 Difference]: Start difference. First operand has 107 places, 65 transitions, 510 flow. Second operand 11 states and 121 transitions. [2024-06-04 15:29:35,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 82 transitions, 718 flow [2024-06-04 15:29:35,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 82 transitions, 664 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:35,769 INFO L231 Difference]: Finished difference. Result has 110 places, 60 transitions, 454 flow [2024-06-04 15:29:35,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=454, PETRI_PLACES=110, PETRI_TRANSITIONS=60} [2024-06-04 15:29:35,769 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-04 15:29:35,769 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 60 transitions, 454 flow [2024-06-04 15:29:35,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:35,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:35,769 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 15:29:35,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 15:29:35,769 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:35,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:35,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2029748022, now seen corresponding path program 7 times [2024-06-04 15:29:35,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:35,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136404418] [2024-06-04 15:29:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:35,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:36,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:36,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:36,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136404418] [2024-06-04 15:29:36,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136404418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:36,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:36,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:36,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015099653] [2024-06-04 15:29:36,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:36,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:36,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:36,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:36,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:36,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 60 transitions, 454 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:36,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:36,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:36,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:36,863 INFO L124 PetriNetUnfolderBase]: 149/328 cut-off events. [2024-06-04 15:29:36,863 INFO L125 PetriNetUnfolderBase]: For 6805/6805 co-relation queries the response was YES. [2024-06-04 15:29:36,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 328 events. 149/328 cut-off events. For 6805/6805 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1307 event pairs, 56 based on Foata normal form. 2/330 useless extension candidates. Maximal degree in co-relation 1513. Up to 284 conditions per place. [2024-06-04 15:29:36,864 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 55 selfloop transitions, 15 changer transitions 0/72 dead transitions. [2024-06-04 15:29:36,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 72 transitions, 620 flow [2024-06-04 15:29:36,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:36,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-04 15:29:36,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-04 15:29:36,865 INFO L175 Difference]: Start difference. First operand has 110 places, 60 transitions, 454 flow. Second operand 10 states and 105 transitions. [2024-06-04 15:29:36,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 72 transitions, 620 flow [2024-06-04 15:29:36,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 72 transitions, 566 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:29:36,872 INFO L231 Difference]: Finished difference. Result has 104 places, 60 transitions, 434 flow [2024-06-04 15:29:36,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=94, 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=10, PETRI_FLOW=434, PETRI_PLACES=104, PETRI_TRANSITIONS=60} [2024-06-04 15:29:36,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-04 15:29:36,873 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 60 transitions, 434 flow [2024-06-04 15:29:36,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:36,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:36,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:36,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 15:29:36,873 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:36,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:36,874 INFO L85 PathProgramCache]: Analyzing trace with hash -348648977, now seen corresponding path program 1 times [2024-06-04 15:29:36,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:36,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280249567] [2024-06-04 15:29:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:36,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:37,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:37,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280249567] [2024-06-04 15:29:37,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280249567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:37,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:37,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:37,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632984472] [2024-06-04 15:29:37,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:37,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:37,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:37,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:37,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:37,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:37,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 60 transitions, 434 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:37,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:37,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:37,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:38,201 INFO L124 PetriNetUnfolderBase]: 142/315 cut-off events. [2024-06-04 15:29:38,202 INFO L125 PetriNetUnfolderBase]: For 5945/5945 co-relation queries the response was YES. [2024-06-04 15:29:38,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1325 conditions, 315 events. 142/315 cut-off events. For 5945/5945 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1253 event pairs, 42 based on Foata normal form. 6/321 useless extension candidates. Maximal degree in co-relation 1279. Up to 205 conditions per place. [2024-06-04 15:29:38,203 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 45 selfloop transitions, 9 changer transitions 21/77 dead transitions. [2024-06-04 15:29:38,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 77 transitions, 628 flow [2024-06-04 15:29:38,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:38,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 15:29:38,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-04 15:29:38,203 INFO L175 Difference]: Start difference. First operand has 104 places, 60 transitions, 434 flow. Second operand 11 states and 116 transitions. [2024-06-04 15:29:38,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 77 transitions, 628 flow [2024-06-04 15:29:38,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 77 transitions, 573 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:38,209 INFO L231 Difference]: Finished difference. Result has 106 places, 52 transitions, 347 flow [2024-06-04 15:29:38,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=347, PETRI_PLACES=106, PETRI_TRANSITIONS=52} [2024-06-04 15:29:38,210 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-04 15:29:38,210 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 52 transitions, 347 flow [2024-06-04 15:29:38,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:38,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:38,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:38,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 15:29:38,210 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:38,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:38,210 INFO L85 PathProgramCache]: Analyzing trace with hash 906451137, now seen corresponding path program 2 times [2024-06-04 15:29:38,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:38,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273802936] [2024-06-04 15:29:38,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:38,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:39,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:39,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273802936] [2024-06-04 15:29:39,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273802936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:39,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:39,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:39,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516501842] [2024-06-04 15:29:39,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:39,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:39,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:39,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:39,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:39,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:39,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 52 transitions, 347 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:39,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:39,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:39,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:39,828 INFO L124 PetriNetUnfolderBase]: 127/278 cut-off events. [2024-06-04 15:29:39,829 INFO L125 PetriNetUnfolderBase]: For 6288/6288 co-relation queries the response was YES. [2024-06-04 15:29:39,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 278 events. 127/278 cut-off events. For 6288/6288 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1054 event pairs, 41 based on Foata normal form. 6/284 useless extension candidates. Maximal degree in co-relation 1101. Up to 170 conditions per place. [2024-06-04 15:29:39,830 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 35 selfloop transitions, 10 changer transitions 20/67 dead transitions. [2024-06-04 15:29:39,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 67 transitions, 513 flow [2024-06-04 15:29:39,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:39,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:39,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-04 15:29:39,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-04 15:29:39,830 INFO L175 Difference]: Start difference. First operand has 106 places, 52 transitions, 347 flow. Second operand 11 states and 114 transitions. [2024-06-04 15:29:39,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 67 transitions, 513 flow [2024-06-04 15:29:39,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 67 transitions, 473 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:29:39,837 INFO L231 Difference]: Finished difference. Result has 93 places, 45 transitions, 292 flow [2024-06-04 15:29:39,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=292, PETRI_PLACES=93, PETRI_TRANSITIONS=45} [2024-06-04 15:29:39,837 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-06-04 15:29:39,837 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 45 transitions, 292 flow [2024-06-04 15:29:39,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:39,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:39,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:39,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 15:29:39,838 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:39,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:39,838 INFO L85 PathProgramCache]: Analyzing trace with hash 555774371, now seen corresponding path program 3 times [2024-06-04 15:29:39,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:39,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671677897] [2024-06-04 15:29:39,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:39,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:40,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:40,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671677897] [2024-06-04 15:29:40,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671677897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:40,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:40,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:40,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876530589] [2024-06-04 15:29:40,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:40,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:40,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:40,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:40,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:41,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:41,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 45 transitions, 292 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:41,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:41,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:41,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:41,306 INFO L124 PetriNetUnfolderBase]: 111/243 cut-off events. [2024-06-04 15:29:41,306 INFO L125 PetriNetUnfolderBase]: For 5768/5768 co-relation queries the response was YES. [2024-06-04 15:29:41,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 243 events. 111/243 cut-off events. For 5768/5768 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 878 event pairs, 36 based on Foata normal form. 6/249 useless extension candidates. Maximal degree in co-relation 965. Up to 169 conditions per place. [2024-06-04 15:29:41,307 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 35 selfloop transitions, 6 changer transitions 17/60 dead transitions. [2024-06-04 15:29:41,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 60 transitions, 444 flow [2024-06-04 15:29:41,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:41,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-04 15:29:41,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-04 15:29:41,308 INFO L175 Difference]: Start difference. First operand has 93 places, 45 transitions, 292 flow. Second operand 11 states and 110 transitions. [2024-06-04 15:29:41,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 60 transitions, 444 flow [2024-06-04 15:29:41,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 60 transitions, 406 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:29:41,312 INFO L231 Difference]: Finished difference. Result has 80 places, 39 transitions, 232 flow [2024-06-04 15:29:41,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=232, PETRI_PLACES=80, PETRI_TRANSITIONS=39} [2024-06-04 15:29:41,312 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-04 15:29:41,312 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 39 transitions, 232 flow [2024-06-04 15:29:41,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:41,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:41,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:41,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 15:29:41,312 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:41,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:41,313 INFO L85 PathProgramCache]: Analyzing trace with hash 46194577, now seen corresponding path program 4 times [2024-06-04 15:29:41,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:41,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929489478] [2024-06-04 15:29:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:41,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:42,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:42,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929489478] [2024-06-04 15:29:42,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929489478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:42,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:42,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:42,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344405391] [2024-06-04 15:29:42,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:42,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:42,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:42,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:42,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:42,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:42,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 39 transitions, 232 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:42,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:42,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:42,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:42,483 INFO L124 PetriNetUnfolderBase]: 97/213 cut-off events. [2024-06-04 15:29:42,483 INFO L125 PetriNetUnfolderBase]: For 3676/3676 co-relation queries the response was YES. [2024-06-04 15:29:42,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 213 events. 97/213 cut-off events. For 3676/3676 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 723 event pairs, 32 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 804. Up to 146 conditions per place. [2024-06-04 15:29:42,484 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 29 selfloop transitions, 8 changer transitions 14/53 dead transitions. [2024-06-04 15:29:42,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 53 transitions, 364 flow [2024-06-04 15:29:42,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:42,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:42,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-04 15:29:42,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-04 15:29:42,485 INFO L175 Difference]: Start difference. First operand has 80 places, 39 transitions, 232 flow. Second operand 11 states and 108 transitions. [2024-06-04 15:29:42,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 53 transitions, 364 flow [2024-06-04 15:29:42,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 53 transitions, 342 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 15:29:42,487 INFO L231 Difference]: Finished difference. Result has 71 places, 35 transitions, 210 flow [2024-06-04 15:29:42,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=210, PETRI_PLACES=71, PETRI_TRANSITIONS=35} [2024-06-04 15:29:42,487 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-04 15:29:42,488 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 35 transitions, 210 flow [2024-06-04 15:29:42,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:42,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:42,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:42,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 15:29:42,488 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:42,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:42,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1278293283, now seen corresponding path program 5 times [2024-06-04 15:29:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:42,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220803139] [2024-06-04 15:29:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:42,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:43,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:43,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:43,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220803139] [2024-06-04 15:29:43,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220803139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:43,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:43,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:43,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68509651] [2024-06-04 15:29:43,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:43,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:43,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:43,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:43,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:43,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:43,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 35 transitions, 210 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:43,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:43,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:43,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:43,871 INFO L124 PetriNetUnfolderBase]: 68/154 cut-off events. [2024-06-04 15:29:43,871 INFO L125 PetriNetUnfolderBase]: For 1618/1618 co-relation queries the response was YES. [2024-06-04 15:29:43,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 154 events. 68/154 cut-off events. For 1618/1618 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 439 event pairs, 17 based on Foata normal form. 6/160 useless extension candidates. Maximal degree in co-relation 524. Up to 92 conditions per place. [2024-06-04 15:29:43,871 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 26 selfloop transitions, 5 changer transitions 16/49 dead transitions. [2024-06-04 15:29:43,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 49 transitions, 336 flow [2024-06-04 15:29:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-04 15:29:43,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-04 15:29:43,872 INFO L175 Difference]: Start difference. First operand has 71 places, 35 transitions, 210 flow. Second operand 11 states and 106 transitions. [2024-06-04 15:29:43,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 49 transitions, 336 flow [2024-06-04 15:29:43,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 49 transitions, 312 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:29:43,874 INFO L231 Difference]: Finished difference. Result has 65 places, 30 transitions, 166 flow [2024-06-04 15:29:43,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=166, PETRI_PLACES=65, PETRI_TRANSITIONS=30} [2024-06-04 15:29:43,874 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-04 15:29:43,874 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 30 transitions, 166 flow [2024-06-04 15:29:43,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:43,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:43,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:43,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 15:29:43,874 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:43,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1815089337, now seen corresponding path program 6 times [2024-06-04 15:29:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:43,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559783376] [2024-06-04 15:29:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:43,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:45,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:45,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559783376] [2024-06-04 15:29:45,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559783376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:45,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:45,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:45,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834601779] [2024-06-04 15:29:45,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:45,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:45,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:45,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:45,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:45,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:45,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 30 transitions, 166 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:45,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:45,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:45,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:45,342 INFO L124 PetriNetUnfolderBase]: 55/127 cut-off events. [2024-06-04 15:29:45,342 INFO L125 PetriNetUnfolderBase]: For 1062/1062 co-relation queries the response was YES. [2024-06-04 15:29:45,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 127 events. 55/127 cut-off events. For 1062/1062 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 315 event pairs, 15 based on Foata normal form. 6/133 useless extension candidates. Maximal degree in co-relation 416. Up to 54 conditions per place. [2024-06-04 15:29:45,343 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 19 selfloop transitions, 9 changer transitions 13/43 dead transitions. [2024-06-04 15:29:45,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 43 transitions, 278 flow [2024-06-04 15:29:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-04 15:29:45,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-04 15:29:45,344 INFO L175 Difference]: Start difference. First operand has 65 places, 30 transitions, 166 flow. Second operand 11 states and 104 transitions. [2024-06-04 15:29:45,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 43 transitions, 278 flow [2024-06-04 15:29:45,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 43 transitions, 260 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:45,345 INFO L231 Difference]: Finished difference. Result has 57 places, 25 transitions, 137 flow [2024-06-04 15:29:45,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=137, PETRI_PLACES=57, PETRI_TRANSITIONS=25} [2024-06-04 15:29:45,345 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-04 15:29:45,345 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 25 transitions, 137 flow [2024-06-04 15:29:45,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:45,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:45,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:45,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 15:29:45,345 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:45,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:45,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2064180537, now seen corresponding path program 7 times [2024-06-04 15:29:45,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:45,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090468647] [2024-06-04 15:29:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:45,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:46,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:46,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090468647] [2024-06-04 15:29:46,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090468647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:46,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:46,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:46,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609840961] [2024-06-04 15:29:46,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:46,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:46,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:46,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:46,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:46,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 15:29:46,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 25 transitions, 137 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:46,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:46,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 15:29:46,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:46,916 INFO L124 PetriNetUnfolderBase]: 27/71 cut-off events. [2024-06-04 15:29:46,917 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2024-06-04 15:29:46,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 71 events. 27/71 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 210. Up to 24 conditions per place. [2024-06-04 15:29:46,917 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-04 15:29:46,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 33 transitions, 195 flow [2024-06-04 15:29:46,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-04 15:29:46,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28152492668621704 [2024-06-04 15:29:46,917 INFO L175 Difference]: Start difference. First operand has 57 places, 25 transitions, 137 flow. Second operand 11 states and 96 transitions. [2024-06-04 15:29:46,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 33 transitions, 195 flow [2024-06-04 15:29:46,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 33 transitions, 155 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-04 15:29:46,918 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-06-04 15:29:46,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-06-04 15:29:46,918 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-04 15:29:46,918 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-06-04 15:29:46,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:46,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 15:29:46,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 15:29:46,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 15:29:46,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 15:29:46,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 15:29:46,923 INFO L445 BasicCegarLoop]: Path program histogram: [40, 18, 14, 8, 7, 7, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:46,926 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 15:29:46,926 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 15:29:46,929 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 15:29:46,929 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 15:29:46,929 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 03:29:46 BasicIcfg [2024-06-04 15:29:46,929 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 15:29:46,930 INFO L158 Benchmark]: Toolchain (without parser) took 139751.17ms. Allocated memory was 140.5MB in the beginning and 752.9MB in the end (delta: 612.4MB). Free memory was 102.0MB in the beginning and 352.0MB in the end (delta: -250.0MB). Peak memory consumption was 362.4MB. Max. memory is 16.1GB. [2024-06-04 15:29:46,930 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 104.9MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:29:46,930 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 140.5MB. Free memory is still 107.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:29:46,930 INFO L158 Benchmark]: CACSL2BoogieTranslator took 549.39ms. Allocated memory is still 140.5MB. Free memory was 101.1MB in the beginning and 68.6MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-04 15:29:46,930 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.00ms. Allocated memory is still 140.5MB. Free memory was 68.6MB in the beginning and 66.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 15:29:46,931 INFO L158 Benchmark]: Boogie Preprocessor took 71.13ms. Allocated memory is still 140.5MB. Free memory was 66.4MB in the beginning and 109.5MB in the end (delta: -43.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-06-04 15:29:46,931 INFO L158 Benchmark]: RCFGBuilder took 602.15ms. Allocated memory is still 140.5MB. Free memory was 109.5MB in the beginning and 59.2MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-06-04 15:29:46,931 INFO L158 Benchmark]: TraceAbstraction took 138456.98ms. Allocated memory was 140.5MB in the beginning and 752.9MB in the end (delta: 612.4MB). Free memory was 58.2MB in the beginning and 352.0MB in the end (delta: -293.8MB). Peak memory consumption was 320.6MB. Max. memory is 16.1GB. [2024-06-04 15:29:46,932 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 104.9MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 140.5MB. Free memory is still 107.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 549.39ms. Allocated memory is still 140.5MB. Free memory was 101.1MB in the beginning and 68.6MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.00ms. Allocated memory is still 140.5MB. Free memory was 68.6MB in the beginning and 66.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.13ms. Allocated memory is still 140.5MB. Free memory was 66.4MB in the beginning and 109.5MB in the end (delta: -43.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 602.15ms. Allocated memory is still 140.5MB. Free memory was 109.5MB in the beginning and 59.2MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 138456.98ms. Allocated memory was 140.5MB in the beginning and 752.9MB in the end (delta: 612.4MB). Free memory was 58.2MB in the beginning and 352.0MB in the end (delta: -293.8MB). Peak memory consumption was 320.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: 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, 49 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: 138.4s, OverallIterations: 121, TraceHistogramMax: 1, PathProgramHistogramMax: 40, EmptinessCheckTime: 0.0s, AutomataDifference: 51.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7672 SdHoareTripleChecker+Valid, 27.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6600 mSDsluCounter, 4370 SdHoareTripleChecker+Invalid, 23.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3840 mSDsCounter, 1953 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46479 IncrementalHoareTripleChecker+Invalid, 48432 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1953 mSolverCounterUnsat, 530 mSDtfsCounter, 46479 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1334 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2483 ImplicationChecksByTransitivity, 32.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2560occurred in iteration=57, InterpolantAutomatonStates: 1170, 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, 0.6s SatisfiabilityAnalysisTime, 84.9s InterpolantComputationTime, 2022 NumberOfCodeBlocks, 2022 NumberOfCodeBlocksAsserted, 121 NumberOfCheckSat, 1901 ConstructedInterpolants, 0 QuantifiedInterpolants, 78069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 121 InterpolantComputations, 121 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 15:29:46,964 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