./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/rfi008.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/rfi008.oepc.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-cde23df-m [2024-06-14 12:45:25,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:45:25,741 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:45:25,746 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:45:25,747 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:45:25,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:45:25,773 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:45:25,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:45:25,774 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:45:25,778 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:45:25,778 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:45:25,778 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:45:25,779 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:45:25,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:45:25,781 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:45:25,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:45:25,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:45:25,781 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:45:25,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:45:25,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:45:25,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:45:25,782 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:45:25,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:45:25,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:45:25,783 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:45:25,783 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:45:25,784 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:45:25,784 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:45:25,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:45:25,785 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:45:25,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:45:25,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:45:25,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:45:25,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:45:25,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:45:25,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:45:25,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:45:25,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:45:25,787 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:45:25,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:45:25,788 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:45:25,788 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:45:25,788 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:45:25,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:45:26,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:45:26,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:45:26,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:45:26,080 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:45:26,081 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:45:26,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi008.oepc.yml/witness.yml [2024-06-14 12:45:26,249 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:45:26,249 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:45:26,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i [2024-06-14 12:45:27,379 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:45:27,690 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:45:27,691 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i [2024-06-14 12:45:27,713 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736e25c6d/ed9a902725d947348304436e187e9839/FLAGc664417c4 [2024-06-14 12:45:27,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736e25c6d/ed9a902725d947348304436e187e9839 [2024-06-14 12:45:27,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:45:27,730 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:45:27,734 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:45:27,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:45:27,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:45:27,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:45:26" (1/2) ... [2024-06-14 12:45:27,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f0a239 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:27, skipping insertion in model container [2024-06-14 12:45:27,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:45:26" (1/2) ... [2024-06-14 12:45:27,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3bfef9f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:27, skipping insertion in model container [2024-06-14 12:45:27,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:45:27" (2/2) ... [2024-06-14 12:45:27,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f0a239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:27, skipping insertion in model container [2024-06-14 12:45:27,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:45:27" (2/2) ... [2024-06-14 12:45:27,743 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:45:27,811 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:45:27,813 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-14 12:45:27,813 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-14 12:45:27,813 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:45:27,814 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-14 12:45:27,858 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:45:28,261 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:45:28,270 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:45:28,397 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:45:28,433 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:45:28,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:28 WrapperNode [2024-06-14 12:45:28,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:45:28,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:45:28,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:45:28,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:45:28,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:28" (1/1) ... [2024-06-14 12:45:28,477 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:28" (1/1) ... [2024-06-14 12:45:28,508 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-14 12:45:28,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:45:28,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:45:28,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:45:28,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:45:28,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:28" (1/1) ... [2024-06-14 12:45:28,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:28" (1/1) ... [2024-06-14 12:45:28,523 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:28" (1/1) ... [2024-06-14 12:45:28,545 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]. [2024-06-14 12:45:28,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:28" (1/1) ... [2024-06-14 12:45:28,546 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:28" (1/1) ... [2024-06-14 12:45:28,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:28" (1/1) ... [2024-06-14 12:45:28,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:28" (1/1) ... [2024-06-14 12:45:28,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:28" (1/1) ... [2024-06-14 12:45:28,562 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:28" (1/1) ... [2024-06-14 12:45:28,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:45:28,566 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:45:28,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:45:28,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:45:28,567 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:28" (1/1) ... [2024-06-14 12:45:28,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:45:28,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:45:28,603 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) [2024-06-14 12:45:28,613 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 [2024-06-14 12:45:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:45:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:45:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:45:28,645 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:45:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:45:28,646 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:45:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:45:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:45:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:45:28,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:45:28,648 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:45:28,771 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:45:28,773 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:45:29,157 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:45:29,159 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:45:29,364 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:45:29,365 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:45:29,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:45:29 BoogieIcfgContainer [2024-06-14 12:45:29,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:45:29,370 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:45:29,370 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:45:29,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:45:29,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:45:26" (1/4) ... [2024-06-14 12:45:29,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c20bcef and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:45:29, skipping insertion in model container [2024-06-14 12:45:29,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:45:27" (2/4) ... [2024-06-14 12:45:29,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c20bcef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:45:29, skipping insertion in model container [2024-06-14 12:45:29,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:28" (3/4) ... [2024-06-14 12:45:29,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c20bcef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:45:29, skipping insertion in model container [2024-06-14 12:45:29,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:45:29" (4/4) ... [2024-06-14 12:45:29,382 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi008.oepc.i [2024-06-14 12:45:29,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:45:29,401 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:45:29,401 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:45:29,444 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:45:29,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 12:45:29,509 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-14 12:45:29,509 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:45:29,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:45:29,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 12:45:29,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-14 12:45:29,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:45:29,533 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;@9b7c6d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:45:29,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:45:29,541 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:45:29,542 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 12:45:29,542 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:45:29,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:29,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:45:29,543 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)] === [2024-06-14 12:45:29,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:29,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1460724257, now seen corresponding path program 1 times [2024-06-14 12:45:29,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:29,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561750317] [2024-06-14 12:45:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:29,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:30,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:30,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561750317] [2024-06-14 12:45:30,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561750317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:30,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:30,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:45:30,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652802379] [2024-06-14 12:45:30,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:30,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:45:30,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:30,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:45:30,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:45:30,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 12:45:30,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:30,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:30,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 12:45:30,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:30,974 INFO L124 PetriNetUnfolderBase]: 162/310 cut-off events. [2024-06-14 12:45:30,974 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 12:45:30,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 310 events. 162/310 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1182 event pairs, 97 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 609. Up to 288 conditions per place. [2024-06-14 12:45:30,979 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-14 12:45:30,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-14 12:45:30,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:45:30,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:45:30,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-14 12:45:30,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-06-14 12:45:30,992 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 55 transitions. [2024-06-14 12:45:30,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-14 12:45:30,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:45:30,996 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-14 12:45:30,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-14 12:45:31,001 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-14 12:45:31,001 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-14 12:45:31,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:31,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:31,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:31,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:45:31,002 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)] === [2024-06-14 12:45:31,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:31,003 INFO L85 PathProgramCache]: Analyzing trace with hash 698380346, now seen corresponding path program 1 times [2024-06-14 12:45:31,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:31,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316370546] [2024-06-14 12:45:31,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:31,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:31,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:31,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316370546] [2024-06-14 12:45:31,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316370546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:31,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:31,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:45:31,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913164723] [2024-06-14 12:45:31,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:31,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:45:31,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:31,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:45:31,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:45:31,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 12:45:31,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 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) [2024-06-14 12:45:31,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:31,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 12:45:31,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:31,825 INFO L124 PetriNetUnfolderBase]: 159/307 cut-off events. [2024-06-14 12:45:31,826 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-06-14 12:45:31,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 307 events. 159/307 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1169 event pairs, 79 based on Foata normal form. 2/308 useless extension candidates. Maximal degree in co-relation 682. Up to 274 conditions per place. [2024-06-14 12:45:31,832 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-14 12:45:31,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 163 flow [2024-06-14 12:45:31,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:45:31,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:45:31,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-14 12:45:31,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-14 12:45:31,836 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 70 transitions. [2024-06-14 12:45:31,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 163 flow [2024-06-14 12:45:31,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:45:31,841 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-14 12:45:31,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-14 12:45:31,842 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-14 12:45:31,842 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-14 12:45:31,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 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) [2024-06-14 12:45:31,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:31,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:31,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:45:31,844 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)] === [2024-06-14 12:45:31,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:31,848 INFO L85 PathProgramCache]: Analyzing trace with hash 173167718, now seen corresponding path program 1 times [2024-06-14 12:45:31,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:31,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047478302] [2024-06-14 12:45:31,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:31,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:32,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:32,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047478302] [2024-06-14 12:45:32,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047478302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:32,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:32,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:45:32,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957268794] [2024-06-14 12:45:32,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:32,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:45:32,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:32,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:45:32,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:45:33,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 12:45:33,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2024-06-14 12:45:33,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:33,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 12:45:33,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:33,190 INFO L124 PetriNetUnfolderBase]: 153/301 cut-off events. [2024-06-14 12:45:33,190 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-06-14 12:45:33,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 301 events. 153/301 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1116 event pairs, 43 based on Foata normal form. 4/304 useless extension candidates. Maximal degree in co-relation 733. Up to 246 conditions per place. [2024-06-14 12:45:33,192 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 32 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-14 12:45:33,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 215 flow [2024-06-14 12:45:33,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:45:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:45:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-14 12:45:33,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-14 12:45:33,194 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 86 transitions. [2024-06-14 12:45:33,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 215 flow [2024-06-14 12:45:33,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 206 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 12:45:33,197 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-14 12:45:33,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-14 12:45:33,197 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-14 12:45:33,198 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-14 12:45:33,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2024-06-14 12:45:33,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:33,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:33,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:45:33,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:33,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:33,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1532684601, now seen corresponding path program 1 times [2024-06-14 12:45:33,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:33,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989472142] [2024-06-14 12:45:33,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:33,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:33,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:33,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:33,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989472142] [2024-06-14 12:45:33,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989472142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:33,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:33,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:45:33,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254249501] [2024-06-14 12:45:33,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:33,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:45:33,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:33,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:45:33,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:45:33,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:33,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 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) [2024-06-14 12:45:33,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:33,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:33,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:34,229 INFO L124 PetriNetUnfolderBase]: 211/380 cut-off events. [2024-06-14 12:45:34,230 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2024-06-14 12:45:34,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 380 events. 211/380 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1339 event pairs, 92 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1037. Up to 368 conditions per place. [2024-06-14 12:45:34,233 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2024-06-14 12:45:34,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 209 flow [2024-06-14 12:45:34,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:45:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:45:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-06-14 12:45:34,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:45:34,237 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 5 states and 62 transitions. [2024-06-14 12:45:34,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 209 flow [2024-06-14 12:45:34,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 194 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 12:45:34,241 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 133 flow [2024-06-14 12:45:34,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-06-14 12:45:34,242 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-14 12:45:34,242 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 133 flow [2024-06-14 12:45:34,242 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) [2024-06-14 12:45:34,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:34,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:34,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:45:34,243 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)] === [2024-06-14 12:45:34,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:34,243 INFO L85 PathProgramCache]: Analyzing trace with hash 584721724, now seen corresponding path program 1 times [2024-06-14 12:45:34,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:34,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132827539] [2024-06-14 12:45:34,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:34,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:35,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:35,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132827539] [2024-06-14 12:45:35,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132827539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:35,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:35,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:45:35,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465793979] [2024-06-14 12:45:35,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:35,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:45:35,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:35,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:45:35,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:45:36,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:45:36,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 133 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-14 12:45:36,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:36,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:45:36,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:36,323 INFO L124 PetriNetUnfolderBase]: 190/355 cut-off events. [2024-06-14 12:45:36,323 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-06-14 12:45:36,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 355 events. 190/355 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1259 event pairs, 34 based on Foata normal form. 4/358 useless extension candidates. Maximal degree in co-relation 1002. Up to 272 conditions per place. [2024-06-14 12:45:36,326 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 12 changer transitions 0/57 dead transitions. [2024-06-14 12:45:36,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 297 flow [2024-06-14 12:45:36,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:36,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-14 12:45:36,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-14 12:45:36,328 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 133 flow. Second operand 8 states and 118 transitions. [2024-06-14 12:45:36,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 297 flow [2024-06-14 12:45:36,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 286 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:45:36,331 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 164 flow [2024-06-14 12:45:36,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=164, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-14 12:45:36,331 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-14 12:45:36,332 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 164 flow [2024-06-14 12:45:36,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-14 12:45:36,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:36,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:36,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:45:36,333 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)] === [2024-06-14 12:45:36,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:36,333 INFO L85 PathProgramCache]: Analyzing trace with hash -268581436, now seen corresponding path program 1 times [2024-06-14 12:45:36,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:36,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810542694] [2024-06-14 12:45:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:36,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:37,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:37,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810542694] [2024-06-14 12:45:37,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810542694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:37,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:37,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:45:37,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269688619] [2024-06-14 12:45:37,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:37,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:45:37,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:37,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:45:37,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:45:37,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:37,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 164 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) [2024-06-14 12:45:37,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:37,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:37,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:37,437 INFO L124 PetriNetUnfolderBase]: 201/363 cut-off events. [2024-06-14 12:45:37,437 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2024-06-14 12:45:37,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 363 events. 201/363 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1227 event pairs, 49 based on Foata normal form. 3/365 useless extension candidates. Maximal degree in co-relation 1144. Up to 342 conditions per place. [2024-06-14 12:45:37,440 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-14 12:45:37,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 276 flow [2024-06-14 12:45:37,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:45:37,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:45:37,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-14 12:45:37,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:45:37,442 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 164 flow. Second operand 6 states and 72 transitions. [2024-06-14 12:45:37,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 276 flow [2024-06-14 12:45:37,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 252 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 12:45:37,446 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 173 flow [2024-06-14 12:45:37,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-14 12:45:37,449 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-14 12:45:37,450 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 173 flow [2024-06-14 12:45:37,450 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) [2024-06-14 12:45:37,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:37,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:37,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:45:37,451 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)] === [2024-06-14 12:45:37,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:37,451 INFO L85 PathProgramCache]: Analyzing trace with hash 636740918, now seen corresponding path program 1 times [2024-06-14 12:45:37,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:37,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75713713] [2024-06-14 12:45:37,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:37,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:38,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:38,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75713713] [2024-06-14 12:45:38,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75713713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:38,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:38,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:45:38,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583435633] [2024-06-14 12:45:38,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:38,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:45:38,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:38,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:45:38,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:45:38,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:38,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 173 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) [2024-06-14 12:45:38,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:38,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:38,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:38,521 INFO L124 PetriNetUnfolderBase]: 204/368 cut-off events. [2024-06-14 12:45:38,522 INFO L125 PetriNetUnfolderBase]: For 863/863 co-relation queries the response was YES. [2024-06-14 12:45:38,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 368 events. 204/368 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1259 event pairs, 49 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 1211. Up to 340 conditions per place. [2024-06-14 12:45:38,525 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 38 selfloop transitions, 11 changer transitions 0/51 dead transitions. [2024-06-14 12:45:38,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 323 flow [2024-06-14 12:45:38,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:45:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:45:38,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-06-14 12:45:38,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:45:38,527 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 173 flow. Second operand 6 states and 76 transitions. [2024-06-14 12:45:38,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 323 flow [2024-06-14 12:45:38,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 306 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:45:38,530 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 203 flow [2024-06-14 12:45:38,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-14 12:45:38,531 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-14 12:45:38,531 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 203 flow [2024-06-14 12:45:38,532 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) [2024-06-14 12:45:38,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:38,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:38,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:45:38,532 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)] === [2024-06-14 12:45:38,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:38,533 INFO L85 PathProgramCache]: Analyzing trace with hash 293395208, now seen corresponding path program 2 times [2024-06-14 12:45:38,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:38,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65967927] [2024-06-14 12:45:38,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:38,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:39,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:39,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65967927] [2024-06-14 12:45:39,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65967927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:39,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:39,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:45:39,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630593895] [2024-06-14 12:45:39,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:39,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:45:39,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:39,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:45:39,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:45:39,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:39,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 203 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) [2024-06-14 12:45:39,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:39,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:39,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:39,511 INFO L124 PetriNetUnfolderBase]: 202/365 cut-off events. [2024-06-14 12:45:39,511 INFO L125 PetriNetUnfolderBase]: For 1096/1096 co-relation queries the response was YES. [2024-06-14 12:45:39,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 365 events. 202/365 cut-off events. For 1096/1096 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1243 event pairs, 48 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1263. Up to 350 conditions per place. [2024-06-14 12:45:39,514 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 37 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-14 12:45:39,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 307 flow [2024-06-14 12:45:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:45:39,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:45:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-14 12:45:39,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 12:45:39,516 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 203 flow. Second operand 6 states and 70 transitions. [2024-06-14 12:45:39,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 307 flow [2024-06-14 12:45:39,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 295 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 12:45:39,520 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 212 flow [2024-06-14 12:45:39,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2024-06-14 12:45:39,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-14 12:45:39,522 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 212 flow [2024-06-14 12:45:39,523 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) [2024-06-14 12:45:39,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:39,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:39,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:45:39,524 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)] === [2024-06-14 12:45:39,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:39,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1965014730, now seen corresponding path program 1 times [2024-06-14 12:45:39,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:39,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583372336] [2024-06-14 12:45:39,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:39,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:40,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:40,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583372336] [2024-06-14 12:45:40,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583372336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:40,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:40,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:45:40,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530738402] [2024-06-14 12:45:40,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:40,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:45:40,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:40,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:45:40,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:45:40,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:40,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 212 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) [2024-06-14 12:45:40,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:40,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:40,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:40,996 INFO L124 PetriNetUnfolderBase]: 205/370 cut-off events. [2024-06-14 12:45:40,996 INFO L125 PetriNetUnfolderBase]: For 1404/1404 co-relation queries the response was YES. [2024-06-14 12:45:40,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1356 conditions, 370 events. 205/370 cut-off events. For 1404/1404 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1276 event pairs, 48 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1329. Up to 325 conditions per place. [2024-06-14 12:45:40,999 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-06-14 12:45:40,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 396 flow [2024-06-14 12:45:41,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:45:41,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:45:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 12:45:41,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-14 12:45:41,001 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 212 flow. Second operand 7 states and 89 transitions. [2024-06-14 12:45:41,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 396 flow [2024-06-14 12:45:41,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 375 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-14 12:45:41,004 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 252 flow [2024-06-14 12:45:41,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-14 12:45:41,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-14 12:45:41,005 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 252 flow [2024-06-14 12:45:41,005 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) [2024-06-14 12:45:41,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:41,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:41,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:45:41,006 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)] === [2024-06-14 12:45:41,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:41,007 INFO L85 PathProgramCache]: Analyzing trace with hash -416319645, now seen corresponding path program 1 times [2024-06-14 12:45:41,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:41,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128177115] [2024-06-14 12:45:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:41,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:41,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:41,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128177115] [2024-06-14 12:45:41,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128177115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:41,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:41,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:45:41,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724870207] [2024-06-14 12:45:41,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:41,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:45:41,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:41,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:45:41,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:45:41,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:41,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 252 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) [2024-06-14 12:45:41,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:41,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:41,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:42,115 INFO L124 PetriNetUnfolderBase]: 224/401 cut-off events. [2024-06-14 12:45:42,116 INFO L125 PetriNetUnfolderBase]: For 1956/1956 co-relation queries the response was YES. [2024-06-14 12:45:42,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 401 events. 224/401 cut-off events. For 1956/1956 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1392 event pairs, 51 based on Foata normal form. 3/403 useless extension candidates. Maximal degree in co-relation 1523. Up to 346 conditions per place. [2024-06-14 12:45:42,119 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 49 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-14 12:45:42,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 458 flow [2024-06-14 12:45:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:45:42,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:45:42,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-14 12:45:42,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:45:42,120 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 252 flow. Second operand 7 states and 91 transitions. [2024-06-14 12:45:42,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 458 flow [2024-06-14 12:45:42,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 435 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 12:45:42,125 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 303 flow [2024-06-14 12:45:42,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=303, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-06-14 12:45:42,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-14 12:45:42,126 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 303 flow [2024-06-14 12:45:42,126 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) [2024-06-14 12:45:42,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:42,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:42,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:45:42,127 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)] === [2024-06-14 12:45:42,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:42,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1965164460, now seen corresponding path program 2 times [2024-06-14 12:45:42,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:42,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899718043] [2024-06-14 12:45:42,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:42,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:43,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:43,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899718043] [2024-06-14 12:45:43,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899718043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:43,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:43,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:45:43,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575423529] [2024-06-14 12:45:43,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:43,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:45:43,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:43,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:45:43,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:45:43,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:43,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 303 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) [2024-06-14 12:45:43,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:43,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:43,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:43,450 INFO L124 PetriNetUnfolderBase]: 227/406 cut-off events. [2024-06-14 12:45:43,450 INFO L125 PetriNetUnfolderBase]: For 2298/2298 co-relation queries the response was YES. [2024-06-14 12:45:43,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1697 conditions, 406 events. 227/406 cut-off events. For 2298/2298 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1415 event pairs, 50 based on Foata normal form. 1/406 useless extension candidates. Maximal degree in co-relation 1666. Up to 376 conditions per place. [2024-06-14 12:45:43,454 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 48 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2024-06-14 12:45:43,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 461 flow [2024-06-14 12:45:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:45:43,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:45:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-14 12:45:43,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:45:43,456 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 303 flow. Second operand 7 states and 84 transitions. [2024-06-14 12:45:43,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 461 flow [2024-06-14 12:45:43,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 450 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 12:45:43,460 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 339 flow [2024-06-14 12:45:43,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=59, 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=339, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2024-06-14 12:45:43,461 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-14 12:45:43,461 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 339 flow [2024-06-14 12:45:43,462 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) [2024-06-14 12:45:43,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:43,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:43,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:45:43,462 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)] === [2024-06-14 12:45:43,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:43,463 INFO L85 PathProgramCache]: Analyzing trace with hash 505317795, now seen corresponding path program 2 times [2024-06-14 12:45:43,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:43,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28186668] [2024-06-14 12:45:43,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:43,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:44,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:44,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28186668] [2024-06-14 12:45:44,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28186668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:44,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:44,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:45:44,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896927963] [2024-06-14 12:45:44,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:44,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:45:44,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:44,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:45:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:45:44,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:44,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 339 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) [2024-06-14 12:45:44,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:44,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:44,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:44,574 INFO L124 PetriNetUnfolderBase]: 236/421 cut-off events. [2024-06-14 12:45:44,575 INFO L125 PetriNetUnfolderBase]: For 2895/2895 co-relation queries the response was YES. [2024-06-14 12:45:44,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 421 events. 236/421 cut-off events. For 2895/2895 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1484 event pairs, 49 based on Foata normal form. 3/423 useless extension candidates. Maximal degree in co-relation 1781. Up to 380 conditions per place. [2024-06-14 12:45:44,578 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 52 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-06-14 12:45:44,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 535 flow [2024-06-14 12:45:44,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:45:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:45:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-14 12:45:44,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-14 12:45:44,580 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 339 flow. Second operand 7 states and 86 transitions. [2024-06-14 12:45:44,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 535 flow [2024-06-14 12:45:44,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 508 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 12:45:44,585 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 357 flow [2024-06-14 12:45:44,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2024-06-14 12:45:44,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-14 12:45:44,586 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 357 flow [2024-06-14 12:45:44,586 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) [2024-06-14 12:45:44,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:44,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:44,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:45:44,587 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)] === [2024-06-14 12:45:44,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:44,588 INFO L85 PathProgramCache]: Analyzing trace with hash -408960555, now seen corresponding path program 3 times [2024-06-14 12:45:44,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:44,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079358123] [2024-06-14 12:45:44,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:44,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:45,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:45,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079358123] [2024-06-14 12:45:45,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079358123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:45,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:45,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:45:45,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763217410] [2024-06-14 12:45:45,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:45,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:45:45,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:45,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:45:45,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:45:45,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:45,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 357 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) [2024-06-14 12:45:45,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:45,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:45,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:45,687 INFO L124 PetriNetUnfolderBase]: 230/412 cut-off events. [2024-06-14 12:45:45,687 INFO L125 PetriNetUnfolderBase]: For 3186/3186 co-relation queries the response was YES. [2024-06-14 12:45:45,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1800 conditions, 412 events. 230/412 cut-off events. For 3186/3186 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1442 event pairs, 47 based on Foata normal form. 3/414 useless extension candidates. Maximal degree in co-relation 1765. Up to 388 conditions per place. [2024-06-14 12:45:45,691 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 52 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-06-14 12:45:45,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 64 transitions, 503 flow [2024-06-14 12:45:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:45:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:45:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 12:45:45,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-14 12:45:45,692 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 357 flow. Second operand 7 states and 81 transitions. [2024-06-14 12:45:45,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 64 transitions, 503 flow [2024-06-14 12:45:45,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 465 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 12:45:45,698 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 344 flow [2024-06-14 12:45:45,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=344, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-06-14 12:45:45,699 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-14 12:45:45,699 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 344 flow [2024-06-14 12:45:45,700 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) [2024-06-14 12:45:45,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:45,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:45,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:45:45,700 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)] === [2024-06-14 12:45:45,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:45,701 INFO L85 PathProgramCache]: Analyzing trace with hash -843722950, now seen corresponding path program 3 times [2024-06-14 12:45:45,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:45,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570567225] [2024-06-14 12:45:45,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:45,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:46,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:46,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570567225] [2024-06-14 12:45:46,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570567225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:46,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:46,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:45:46,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177106520] [2024-06-14 12:45:46,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:46,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:45:46,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:46,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:45:46,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:45:46,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:46,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 344 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) [2024-06-14 12:45:46,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:46,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:46,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:46,953 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-14 12:45:46,953 INFO L125 PetriNetUnfolderBase]: For 3304/3304 co-relation queries the response was YES. [2024-06-14 12:45:46,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 409 events. 228/409 cut-off events. For 3304/3304 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1438 event pairs, 47 based on Foata normal form. 1/409 useless extension candidates. Maximal degree in co-relation 1751. Up to 391 conditions per place. [2024-06-14 12:45:46,957 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2024-06-14 12:45:46,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 62 transitions, 480 flow [2024-06-14 12:45:46,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:45:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:45:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 12:45:46,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-14 12:45:46,959 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 344 flow. Second operand 7 states and 79 transitions. [2024-06-14 12:45:46,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 62 transitions, 480 flow [2024-06-14 12:45:46,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 452 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 12:45:46,964 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 341 flow [2024-06-14 12:45:46,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=341, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2024-06-14 12:45:46,965 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-14 12:45:46,965 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 341 flow [2024-06-14 12:45:46,965 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) [2024-06-14 12:45:46,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:46,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:46,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:45:46,966 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)] === [2024-06-14 12:45:46,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:46,967 INFO L85 PathProgramCache]: Analyzing trace with hash -21190711, now seen corresponding path program 1 times [2024-06-14 12:45:46,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:46,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043170530] [2024-06-14 12:45:46,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:46,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:48,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:48,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043170530] [2024-06-14 12:45:48,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043170530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:48,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:48,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:48,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511056311] [2024-06-14 12:45:48,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:48,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:48,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:48,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:48,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:48,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:48,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 341 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) [2024-06-14 12:45:48,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:48,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:48,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:48,611 INFO L124 PetriNetUnfolderBase]: 234/419 cut-off events. [2024-06-14 12:45:48,611 INFO L125 PetriNetUnfolderBase]: For 3882/3882 co-relation queries the response was YES. [2024-06-14 12:45:48,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1848 conditions, 419 events. 234/419 cut-off events. For 3882/3882 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1492 event pairs, 46 based on Foata normal form. 2/420 useless extension candidates. Maximal degree in co-relation 1812. Up to 366 conditions per place. [2024-06-14 12:45:48,615 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2024-06-14 12:45:48,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 75 transitions, 545 flow [2024-06-14 12:45:48,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:48,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 12:45:48,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-14 12:45:48,617 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 341 flow. Second operand 8 states and 99 transitions. [2024-06-14 12:45:48,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 75 transitions, 545 flow [2024-06-14 12:45:48,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 75 transitions, 510 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:48,637 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 354 flow [2024-06-14 12:45:48,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=354, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-06-14 12:45:48,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-14 12:45:48,639 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 354 flow [2024-06-14 12:45:48,639 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) [2024-06-14 12:45:48,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:48,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:48,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:45:48,639 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)] === [2024-06-14 12:45:48,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:48,640 INFO L85 PathProgramCache]: Analyzing trace with hash 785915425, now seen corresponding path program 1 times [2024-06-14 12:45:48,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:48,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63443884] [2024-06-14 12:45:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:48,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:49,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:49,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63443884] [2024-06-14 12:45:49,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63443884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:49,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:49,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:49,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383432822] [2024-06-14 12:45:49,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:49,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:49,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:49,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:49,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:49,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:49,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 354 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) [2024-06-14 12:45:49,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:49,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:49,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:50,096 INFO L124 PetriNetUnfolderBase]: 247/440 cut-off events. [2024-06-14 12:45:50,096 INFO L125 PetriNetUnfolderBase]: For 4535/4535 co-relation queries the response was YES. [2024-06-14 12:45:50,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2004 conditions, 440 events. 247/440 cut-off events. For 4535/4535 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1600 event pairs, 47 based on Foata normal form. 1/440 useless extension candidates. Maximal degree in co-relation 1968. Up to 331 conditions per place. [2024-06-14 12:45:50,101 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 52 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-14 12:45:50,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 606 flow [2024-06-14 12:45:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:50,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:50,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-14 12:45:50,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-14 12:45:50,103 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 354 flow. Second operand 8 states and 105 transitions. [2024-06-14 12:45:50,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 606 flow [2024-06-14 12:45:50,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 576 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 12:45:50,110 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 424 flow [2024-06-14 12:45:50,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=424, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-06-14 12:45:50,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-14 12:45:50,111 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 424 flow [2024-06-14 12:45:50,111 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) [2024-06-14 12:45:50,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:50,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:50,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:45:50,112 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)] === [2024-06-14 12:45:50,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:50,112 INFO L85 PathProgramCache]: Analyzing trace with hash 785915239, now seen corresponding path program 2 times [2024-06-14 12:45:50,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:50,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78896968] [2024-06-14 12:45:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:50,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:51,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:51,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78896968] [2024-06-14 12:45:51,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78896968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:51,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:51,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:51,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126385282] [2024-06-14 12:45:51,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:51,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:51,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:51,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:51,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:51,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 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) [2024-06-14 12:45:51,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:51,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:51,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:51,558 INFO L124 PetriNetUnfolderBase]: 253/450 cut-off events. [2024-06-14 12:45:51,559 INFO L125 PetriNetUnfolderBase]: For 5412/5412 co-relation queries the response was YES. [2024-06-14 12:45:51,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 450 events. 253/450 cut-off events. For 5412/5412 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1637 event pairs, 49 based on Foata normal form. 2/451 useless extension candidates. Maximal degree in co-relation 2175. Up to 362 conditions per place. [2024-06-14 12:45:51,563 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 58 selfloop transitions, 24 changer transitions 0/84 dead transitions. [2024-06-14 12:45:51,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 700 flow [2024-06-14 12:45:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:51,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 12:45:51,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-14 12:45:51,565 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 424 flow. Second operand 8 states and 103 transitions. [2024-06-14 12:45:51,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 700 flow [2024-06-14 12:45:51,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 670 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:45:51,572 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 483 flow [2024-06-14 12:45:51,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=483, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2024-06-14 12:45:51,573 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-14 12:45:51,573 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 483 flow [2024-06-14 12:45:51,573 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) [2024-06-14 12:45:51,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:51,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:51,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:45:51,574 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)] === [2024-06-14 12:45:51,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:51,574 INFO L85 PathProgramCache]: Analyzing trace with hash 790556869, now seen corresponding path program 3 times [2024-06-14 12:45:51,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:51,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017540015] [2024-06-14 12:45:51,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:51,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:52,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:52,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017540015] [2024-06-14 12:45:52,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017540015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:52,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:52,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:52,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189164095] [2024-06-14 12:45:52,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:52,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:52,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:52,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:52,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:52,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:52,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 483 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) [2024-06-14 12:45:52,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:52,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:52,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:53,156 INFO L124 PetriNetUnfolderBase]: 256/455 cut-off events. [2024-06-14 12:45:53,156 INFO L125 PetriNetUnfolderBase]: For 5980/5980 co-relation queries the response was YES. [2024-06-14 12:45:53,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 455 events. 256/455 cut-off events. For 5980/5980 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1671 event pairs, 48 based on Foata normal form. 1/455 useless extension candidates. Maximal degree in co-relation 2302. Up to 422 conditions per place. [2024-06-14 12:45:53,161 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 62 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2024-06-14 12:45:53,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 79 transitions, 679 flow [2024-06-14 12:45:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:53,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 12:45:53,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-14 12:45:53,162 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 483 flow. Second operand 8 states and 93 transitions. [2024-06-14 12:45:53,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 79 transitions, 679 flow [2024-06-14 12:45:53,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 643 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-14 12:45:53,171 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 502 flow [2024-06-14 12:45:53,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-06-14 12:45:53,172 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-14 12:45:53,172 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 502 flow [2024-06-14 12:45:53,173 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) [2024-06-14 12:45:53,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:53,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:53,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:45:53,173 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)] === [2024-06-14 12:45:53,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:53,174 INFO L85 PathProgramCache]: Analyzing trace with hash 790557055, now seen corresponding path program 2 times [2024-06-14 12:45:53,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:53,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668377405] [2024-06-14 12:45:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:53,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:54,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:54,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668377405] [2024-06-14 12:45:54,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668377405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:54,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:54,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:54,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788729422] [2024-06-14 12:45:54,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:54,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:54,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:54,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:54,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:54,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 502 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) [2024-06-14 12:45:54,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:54,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:54,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:54,760 INFO L124 PetriNetUnfolderBase]: 274/484 cut-off events. [2024-06-14 12:45:54,760 INFO L125 PetriNetUnfolderBase]: For 7067/7067 co-relation queries the response was YES. [2024-06-14 12:45:54,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2568 conditions, 484 events. 274/484 cut-off events. For 7067/7067 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1813 event pairs, 47 based on Foata normal form. 1/484 useless extension candidates. Maximal degree in co-relation 2526. Up to 406 conditions per place. [2024-06-14 12:45:54,766 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 23 changer transitions 0/90 dead transitions. [2024-06-14 12:45:54,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 795 flow [2024-06-14 12:45:54,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:54,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:54,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 12:45:54,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:45:54,768 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 502 flow. Second operand 8 states and 104 transitions. [2024-06-14 12:45:54,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 795 flow [2024-06-14 12:45:54,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 760 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 12:45:54,781 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 562 flow [2024-06-14 12:45:54,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=562, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-06-14 12:45:54,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-14 12:45:54,783 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 562 flow [2024-06-14 12:45:54,783 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) [2024-06-14 12:45:54,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:54,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:54,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:45:54,784 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)] === [2024-06-14 12:45:54,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:54,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2022695997, now seen corresponding path program 3 times [2024-06-14 12:45:54,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:54,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109287062] [2024-06-14 12:45:54,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:54,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:55,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:55,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109287062] [2024-06-14 12:45:55,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109287062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:55,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:55,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:55,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347292195] [2024-06-14 12:45:55,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:55,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:55,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:55,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:55,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:55,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:55,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 562 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) [2024-06-14 12:45:55,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:55,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:55,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:56,111 INFO L124 PetriNetUnfolderBase]: 268/475 cut-off events. [2024-06-14 12:45:56,112 INFO L125 PetriNetUnfolderBase]: For 7719/7719 co-relation queries the response was YES. [2024-06-14 12:45:56,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2580 conditions, 475 events. 268/475 cut-off events. For 7719/7719 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1775 event pairs, 47 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 2536. Up to 407 conditions per place. [2024-06-14 12:45:56,116 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 67 selfloop transitions, 20 changer transitions 0/89 dead transitions. [2024-06-14 12:45:56,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 784 flow [2024-06-14 12:45:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:56,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-14 12:45:56,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-14 12:45:56,119 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 562 flow. Second operand 8 states and 101 transitions. [2024-06-14 12:45:56,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 784 flow [2024-06-14 12:45:56,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 759 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:45:56,132 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 583 flow [2024-06-14 12:45:56,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=583, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2024-06-14 12:45:56,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-14 12:45:56,132 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 583 flow [2024-06-14 12:45:56,133 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) [2024-06-14 12:45:56,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:56,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:56,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:45:56,133 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)] === [2024-06-14 12:45:56,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1515016817, now seen corresponding path program 4 times [2024-06-14 12:45:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:56,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130215534] [2024-06-14 12:45:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:57,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:57,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130215534] [2024-06-14 12:45:57,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130215534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:57,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:57,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:57,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074160088] [2024-06-14 12:45:57,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:57,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:57,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:57,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:57,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:57,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:57,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 583 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) [2024-06-14 12:45:57,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:57,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:57,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:57,516 INFO L124 PetriNetUnfolderBase]: 277/490 cut-off events. [2024-06-14 12:45:57,516 INFO L125 PetriNetUnfolderBase]: For 8514/8514 co-relation queries the response was YES. [2024-06-14 12:45:57,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2740 conditions, 490 events. 277/490 cut-off events. For 8514/8514 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1838 event pairs, 47 based on Foata normal form. 3/492 useless extension candidates. Maximal degree in co-relation 2694. Up to 443 conditions per place. [2024-06-14 12:45:57,521 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 71 selfloop transitions, 16 changer transitions 0/89 dead transitions. [2024-06-14 12:45:57,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 89 transitions, 822 flow [2024-06-14 12:45:57,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:57,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-14 12:45:57,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:45:57,523 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 583 flow. Second operand 8 states and 96 transitions. [2024-06-14 12:45:57,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 89 transitions, 822 flow [2024-06-14 12:45:57,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 777 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:57,534 INFO L231 Difference]: Finished difference. Result has 91 places, 76 transitions, 607 flow [2024-06-14 12:45:57,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=607, PETRI_PLACES=91, PETRI_TRANSITIONS=76} [2024-06-14 12:45:57,535 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-14 12:45:57,535 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 76 transitions, 607 flow [2024-06-14 12:45:57,535 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) [2024-06-14 12:45:57,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:57,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:57,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:45:57,536 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)] === [2024-06-14 12:45:57,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:57,536 INFO L85 PathProgramCache]: Analyzing trace with hash -385606735, now seen corresponding path program 5 times [2024-06-14 12:45:57,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:57,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866951145] [2024-06-14 12:45:57,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:57,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:58,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:58,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866951145] [2024-06-14 12:45:58,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866951145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:58,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:58,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:58,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834074861] [2024-06-14 12:45:58,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:58,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:58,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:58,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:58,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:58,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:58,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 76 transitions, 607 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) [2024-06-14 12:45:58,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:58,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:58,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:58,815 INFO L124 PetriNetUnfolderBase]: 280/495 cut-off events. [2024-06-14 12:45:58,815 INFO L125 PetriNetUnfolderBase]: For 8892/8892 co-relation queries the response was YES. [2024-06-14 12:45:58,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2808 conditions, 495 events. 280/495 cut-off events. For 8892/8892 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1867 event pairs, 46 based on Foata normal form. 1/495 useless extension candidates. Maximal degree in co-relation 2761. Up to 427 conditions per place. [2024-06-14 12:45:58,820 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 22 changer transitions 0/90 dead transitions. [2024-06-14 12:45:58,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 90 transitions, 877 flow [2024-06-14 12:45:58,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:58,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-14 12:45:58,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:45:58,822 INFO L175 Difference]: Start difference. First operand has 91 places, 76 transitions, 607 flow. Second operand 8 states and 96 transitions. [2024-06-14 12:45:58,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 90 transitions, 877 flow [2024-06-14 12:45:58,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 90 transitions, 839 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:45:58,835 INFO L231 Difference]: Finished difference. Result has 93 places, 78 transitions, 638 flow [2024-06-14 12:45:58,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=638, PETRI_PLACES=93, PETRI_TRANSITIONS=78} [2024-06-14 12:45:58,836 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-14 12:45:58,836 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 78 transitions, 638 flow [2024-06-14 12:45:58,836 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) [2024-06-14 12:45:58,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:58,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:58,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:45:58,837 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)] === [2024-06-14 12:45:58,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1393121083, now seen corresponding path program 4 times [2024-06-14 12:45:58,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:58,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400886310] [2024-06-14 12:45:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:58,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:59,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:59,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400886310] [2024-06-14 12:45:59,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400886310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:59,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:59,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:59,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501090266] [2024-06-14 12:45:59,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:59,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:59,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:59,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:59,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:59,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:45:59,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 78 transitions, 638 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) [2024-06-14 12:45:59,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:59,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:45:59,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:00,061 INFO L124 PetriNetUnfolderBase]: 281/497 cut-off events. [2024-06-14 12:46:00,062 INFO L125 PetriNetUnfolderBase]: For 9742/9742 co-relation queries the response was YES. [2024-06-14 12:46:00,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2850 conditions, 497 events. 281/497 cut-off events. For 9742/9742 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1868 event pairs, 51 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 2802. Up to 473 conditions per place. [2024-06-14 12:46:00,067 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 75 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2024-06-14 12:46:00,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 89 transitions, 856 flow [2024-06-14 12:46:00,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:46:00,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:46:00,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 12:46:00,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-14 12:46:00,069 INFO L175 Difference]: Start difference. First operand has 93 places, 78 transitions, 638 flow. Second operand 8 states and 89 transitions. [2024-06-14 12:46:00,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 89 transitions, 856 flow [2024-06-14 12:46:00,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 765 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:00,086 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 600 flow [2024-06-14 12:46:00,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=600, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2024-06-14 12:46:00,087 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-14 12:46:00,087 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 600 flow [2024-06-14 12:46:00,087 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) [2024-06-14 12:46:00,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:00,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:00,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:46:00,088 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)] === [2024-06-14 12:46:00,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:00,088 INFO L85 PathProgramCache]: Analyzing trace with hash 215177593, now seen corresponding path program 1 times [2024-06-14 12:46:00,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:00,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569616566] [2024-06-14 12:46:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:00,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:00,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:00,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:00,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569616566] [2024-06-14 12:46:00,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569616566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:00,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:00,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:46:00,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472582197] [2024-06-14 12:46:00,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:00,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:46:00,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:00,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:46:00,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:46:00,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:00,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 600 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) [2024-06-14 12:46:00,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:00,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:00,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:01,180 INFO L124 PetriNetUnfolderBase]: 282/499 cut-off events. [2024-06-14 12:46:01,180 INFO L125 PetriNetUnfolderBase]: For 10327/10327 co-relation queries the response was YES. [2024-06-14 12:46:01,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 499 events. 282/499 cut-off events. For 10327/10327 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1875 event pairs, 48 based on Foata normal form. 2/500 useless extension candidates. Maximal degree in co-relation 2708. Up to 475 conditions per place. [2024-06-14 12:46:01,184 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 78 selfloop transitions, 14 changer transitions 0/94 dead transitions. [2024-06-14 12:46:01,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 837 flow [2024-06-14 12:46:01,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:46:01,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:46:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-14 12:46:01,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 12:46:01,186 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 600 flow. Second operand 8 states and 90 transitions. [2024-06-14 12:46:01,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 837 flow [2024-06-14 12:46:01,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 804 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:01,198 INFO L231 Difference]: Finished difference. Result has 97 places, 86 transitions, 651 flow [2024-06-14 12:46:01,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=651, PETRI_PLACES=97, PETRI_TRANSITIONS=86} [2024-06-14 12:46:01,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-14 12:46:01,199 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 86 transitions, 651 flow [2024-06-14 12:46:01,199 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) [2024-06-14 12:46:01,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:01,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:01,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:46:01,200 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)] === [2024-06-14 12:46:01,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:01,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1384840177, now seen corresponding path program 6 times [2024-06-14 12:46:01,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:01,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538684763] [2024-06-14 12:46:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:01,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:02,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:02,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538684763] [2024-06-14 12:46:02,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538684763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:02,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:02,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:46:02,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483331368] [2024-06-14 12:46:02,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:02,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:46:02,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:02,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:46:02,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:46:02,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:02,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 86 transitions, 651 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) [2024-06-14 12:46:02,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:02,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:02,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:02,420 INFO L124 PetriNetUnfolderBase]: 276/490 cut-off events. [2024-06-14 12:46:02,420 INFO L125 PetriNetUnfolderBase]: For 10484/10484 co-relation queries the response was YES. [2024-06-14 12:46:02,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2748 conditions, 490 events. 276/490 cut-off events. For 10484/10484 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1856 event pairs, 45 based on Foata normal form. 3/492 useless extension candidates. Maximal degree in co-relation 2698. Up to 455 conditions per place. [2024-06-14 12:46:02,425 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 80 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2024-06-14 12:46:02,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 871 flow [2024-06-14 12:46:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:46:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:46:02,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 12:46:02,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:46:02,428 INFO L175 Difference]: Start difference. First operand has 97 places, 86 transitions, 651 flow. Second operand 8 states and 92 transitions. [2024-06-14 12:46:02,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 871 flow [2024-06-14 12:46:02,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 96 transitions, 841 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 12:46:02,440 INFO L231 Difference]: Finished difference. Result has 102 places, 86 transitions, 655 flow [2024-06-14 12:46:02,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=655, PETRI_PLACES=102, PETRI_TRANSITIONS=86} [2024-06-14 12:46:02,440 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-14 12:46:02,440 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 86 transitions, 655 flow [2024-06-14 12:46:02,441 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) [2024-06-14 12:46:02,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:02,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:02,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:46:02,441 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)] === [2024-06-14 12:46:02,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:02,442 INFO L85 PathProgramCache]: Analyzing trace with hash 215476805, now seen corresponding path program 1 times [2024-06-14 12:46:02,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:02,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319379458] [2024-06-14 12:46:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:02,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:03,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:03,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319379458] [2024-06-14 12:46:03,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319379458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:03,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:03,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:03,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931401981] [2024-06-14 12:46:03,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:03,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:03,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:03,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:03,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:03,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:03,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 86 transitions, 655 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) [2024-06-14 12:46:03,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:03,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:03,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:04,002 INFO L124 PetriNetUnfolderBase]: 273/485 cut-off events. [2024-06-14 12:46:04,002 INFO L125 PetriNetUnfolderBase]: For 10480/10480 co-relation queries the response was YES. [2024-06-14 12:46:04,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 485 events. 273/485 cut-off events. For 10480/10480 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1808 event pairs, 46 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 2664. Up to 458 conditions per place. [2024-06-14 12:46:04,007 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 79 selfloop transitions, 13 changer transitions 0/94 dead transitions. [2024-06-14 12:46:04,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 94 transitions, 857 flow [2024-06-14 12:46:04,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:46:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:46:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 12:46:04,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:46:04,008 INFO L175 Difference]: Start difference. First operand has 102 places, 86 transitions, 655 flow. Second operand 8 states and 88 transitions. [2024-06-14 12:46:04,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 94 transitions, 857 flow [2024-06-14 12:46:04,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 94 transitions, 814 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:04,019 INFO L231 Difference]: Finished difference. Result has 103 places, 86 transitions, 642 flow [2024-06-14 12:46:04,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=642, PETRI_PLACES=103, PETRI_TRANSITIONS=86} [2024-06-14 12:46:04,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-14 12:46:04,020 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 86 transitions, 642 flow [2024-06-14 12:46:04,020 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) [2024-06-14 12:46:04,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:04,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:04,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:46:04,020 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)] === [2024-06-14 12:46:04,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:04,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1868749770, now seen corresponding path program 1 times [2024-06-14 12:46:04,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:04,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487046483] [2024-06-14 12:46:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:04,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:05,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:05,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487046483] [2024-06-14 12:46:05,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487046483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:05,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:05,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:05,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823169315] [2024-06-14 12:46:05,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:05,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:05,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:05,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:05,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:05,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:05,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 86 transitions, 642 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) [2024-06-14 12:46:05,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:05,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:05,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:05,589 INFO L124 PetriNetUnfolderBase]: 276/490 cut-off events. [2024-06-14 12:46:05,589 INFO L125 PetriNetUnfolderBase]: For 10896/10896 co-relation queries the response was YES. [2024-06-14 12:46:05,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2740 conditions, 490 events. 276/490 cut-off events. For 10896/10896 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1844 event pairs, 45 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 2686. Up to 448 conditions per place. [2024-06-14 12:46:05,593 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 90 selfloop transitions, 15 changer transitions 0/107 dead transitions. [2024-06-14 12:46:05,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 107 transitions, 925 flow [2024-06-14 12:46:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:05,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:05,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 12:46:05,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-14 12:46:05,597 INFO L175 Difference]: Start difference. First operand has 103 places, 86 transitions, 642 flow. Second operand 9 states and 106 transitions. [2024-06-14 12:46:05,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 107 transitions, 925 flow [2024-06-14 12:46:05,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 107 transitions, 892 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:05,613 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 678 flow [2024-06-14 12:46:05,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=678, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2024-06-14 12:46:05,614 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-14 12:46:05,614 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 678 flow [2024-06-14 12:46:05,615 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) [2024-06-14 12:46:05,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:05,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:05,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:46:05,615 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)] === [2024-06-14 12:46:05,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:05,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1406424631, now seen corresponding path program 1 times [2024-06-14 12:46:05,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:05,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531085934] [2024-06-14 12:46:05,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:05,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:06,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:06,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531085934] [2024-06-14 12:46:06,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531085934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:06,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:06,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:06,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080550703] [2024-06-14 12:46:06,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:06,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:06,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:06,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:06,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:06,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:06,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 678 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) [2024-06-14 12:46:06,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:06,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:06,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:07,225 INFO L124 PetriNetUnfolderBase]: 292/516 cut-off events. [2024-06-14 12:46:07,225 INFO L125 PetriNetUnfolderBase]: For 12749/12749 co-relation queries the response was YES. [2024-06-14 12:46:07,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2969 conditions, 516 events. 292/516 cut-off events. For 12749/12749 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1992 event pairs, 41 based on Foata normal form. 2/517 useless extension candidates. Maximal degree in co-relation 2913. Up to 376 conditions per place. [2024-06-14 12:46:07,234 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 75 selfloop transitions, 36 changer transitions 0/113 dead transitions. [2024-06-14 12:46:07,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 113 transitions, 1048 flow [2024-06-14 12:46:07,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:07,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:46:07,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-14 12:46:07,237 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 678 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:46:07,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 113 transitions, 1048 flow [2024-06-14 12:46:07,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 113 transitions, 1013 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:07,265 INFO L231 Difference]: Finished difference. Result has 110 places, 94 transitions, 756 flow [2024-06-14 12:46:07,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=756, PETRI_PLACES=110, PETRI_TRANSITIONS=94} [2024-06-14 12:46:07,271 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-14 12:46:07,271 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 94 transitions, 756 flow [2024-06-14 12:46:07,271 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) [2024-06-14 12:46:07,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:07,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:07,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:46:07,272 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)] === [2024-06-14 12:46:07,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:07,272 INFO L85 PathProgramCache]: Analyzing trace with hash -656761372, now seen corresponding path program 2 times [2024-06-14 12:46:07,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:07,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81850501] [2024-06-14 12:46:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:07,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:08,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:08,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81850501] [2024-06-14 12:46:08,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81850501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:08,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:08,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:08,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158219389] [2024-06-14 12:46:08,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:08,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:08,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:08,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:08,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:08,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:08,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 94 transitions, 756 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) [2024-06-14 12:46:08,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:08,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:08,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:08,648 INFO L124 PetriNetUnfolderBase]: 328/574 cut-off events. [2024-06-14 12:46:08,648 INFO L125 PetriNetUnfolderBase]: For 16245/16245 co-relation queries the response was YES. [2024-06-14 12:46:08,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 574 events. 328/574 cut-off events. For 16245/16245 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2282 event pairs, 40 based on Foata normal form. 2/575 useless extension candidates. Maximal degree in co-relation 3447. Up to 330 conditions per place. [2024-06-14 12:46:08,653 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 76 selfloop transitions, 46 changer transitions 0/124 dead transitions. [2024-06-14 12:46:08,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 124 transitions, 1262 flow [2024-06-14 12:46:08,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:08,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-14 12:46:08,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-14 12:46:08,655 INFO L175 Difference]: Start difference. First operand has 110 places, 94 transitions, 756 flow. Second operand 9 states and 122 transitions. [2024-06-14 12:46:08,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 124 transitions, 1262 flow [2024-06-14 12:46:08,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 124 transitions, 1219 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 12:46:08,681 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 917 flow [2024-06-14 12:46:08,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=917, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-06-14 12:46:08,683 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-14 12:46:08,683 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 917 flow [2024-06-14 12:46:08,683 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) [2024-06-14 12:46:08,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:08,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:08,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:46:08,684 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)] === [2024-06-14 12:46:08,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:08,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1865030700, now seen corresponding path program 3 times [2024-06-14 12:46:08,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:08,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987895216] [2024-06-14 12:46:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:08,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:09,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:09,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987895216] [2024-06-14 12:46:09,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987895216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:09,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:09,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:09,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499183384] [2024-06-14 12:46:09,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:09,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:09,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:09,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:09,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:09,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:09,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 917 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) [2024-06-14 12:46:09,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:09,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:09,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:10,028 INFO L124 PetriNetUnfolderBase]: 329/576 cut-off events. [2024-06-14 12:46:10,029 INFO L125 PetriNetUnfolderBase]: For 17302/17302 co-relation queries the response was YES. [2024-06-14 12:46:10,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 576 events. 329/576 cut-off events. For 17302/17302 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2284 event pairs, 43 based on Foata normal form. 2/577 useless extension candidates. Maximal degree in co-relation 3660. Up to 333 conditions per place. [2024-06-14 12:46:10,034 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 46 changer transitions 0/125 dead transitions. [2024-06-14 12:46:10,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 125 transitions, 1369 flow [2024-06-14 12:46:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:10,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:10,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-14 12:46:10,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-14 12:46:10,036 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 917 flow. Second operand 9 states and 123 transitions. [2024-06-14 12:46:10,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 125 transitions, 1369 flow [2024-06-14 12:46:10,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 125 transitions, 1306 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-14 12:46:10,064 INFO L231 Difference]: Finished difference. Result has 120 places, 104 transitions, 973 flow [2024-06-14 12:46:10,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=973, PETRI_PLACES=120, PETRI_TRANSITIONS=104} [2024-06-14 12:46:10,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-14 12:46:10,066 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 104 transitions, 973 flow [2024-06-14 12:46:10,066 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) [2024-06-14 12:46:10,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:10,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:10,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:46:10,067 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)] === [2024-06-14 12:46:10,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:10,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1262539898, now seen corresponding path program 4 times [2024-06-14 12:46:10,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:10,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437194820] [2024-06-14 12:46:10,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:10,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:11,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:11,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437194820] [2024-06-14 12:46:11,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437194820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:11,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:11,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:11,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976112753] [2024-06-14 12:46:11,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:11,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:11,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:11,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:11,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:11,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:11,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 104 transitions, 973 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) [2024-06-14 12:46:11,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:11,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:11,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:11,438 INFO L124 PetriNetUnfolderBase]: 366/636 cut-off events. [2024-06-14 12:46:11,438 INFO L125 PetriNetUnfolderBase]: For 21480/21480 co-relation queries the response was YES. [2024-06-14 12:46:11,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 636 events. 366/636 cut-off events. For 21480/21480 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2591 event pairs, 49 based on Foata normal form. 2/637 useless extension candidates. Maximal degree in co-relation 4242. Up to 511 conditions per place. [2024-06-14 12:46:11,444 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 31 changer transitions 0/128 dead transitions. [2024-06-14 12:46:11,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 128 transitions, 1414 flow [2024-06-14 12:46:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:11,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:11,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 12:46:11,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-14 12:46:11,447 INFO L175 Difference]: Start difference. First operand has 120 places, 104 transitions, 973 flow. Second operand 9 states and 118 transitions. [2024-06-14 12:46:11,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 128 transitions, 1414 flow [2024-06-14 12:46:11,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 128 transitions, 1317 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:11,480 INFO L231 Difference]: Finished difference. Result has 124 places, 109 transitions, 1026 flow [2024-06-14 12:46:11,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1026, PETRI_PLACES=124, PETRI_TRANSITIONS=109} [2024-06-14 12:46:11,481 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-14 12:46:11,481 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 109 transitions, 1026 flow [2024-06-14 12:46:11,481 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) [2024-06-14 12:46:11,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:11,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:11,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:46:11,482 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)] === [2024-06-14 12:46:11,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:11,482 INFO L85 PathProgramCache]: Analyzing trace with hash -651404727, now seen corresponding path program 1 times [2024-06-14 12:46:11,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:11,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065343127] [2024-06-14 12:46:11,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:11,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:12,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:12,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065343127] [2024-06-14 12:46:12,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065343127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:12,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:12,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:12,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435354071] [2024-06-14 12:46:12,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:12,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:12,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:12,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:12,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:12,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:12,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 109 transitions, 1026 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) [2024-06-14 12:46:12,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:12,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:12,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:12,891 INFO L124 PetriNetUnfolderBase]: 363/631 cut-off events. [2024-06-14 12:46:12,891 INFO L125 PetriNetUnfolderBase]: For 21851/21851 co-relation queries the response was YES. [2024-06-14 12:46:12,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4272 conditions, 631 events. 363/631 cut-off events. For 21851/21851 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2550 event pairs, 66 based on Foata normal form. 1/631 useless extension candidates. Maximal degree in co-relation 4209. Up to 595 conditions per place. [2024-06-14 12:46:12,895 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 18 changer transitions 0/120 dead transitions. [2024-06-14 12:46:12,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 120 transitions, 1290 flow [2024-06-14 12:46:12,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:12,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 12:46:12,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 12:46:12,897 INFO L175 Difference]: Start difference. First operand has 124 places, 109 transitions, 1026 flow. Second operand 9 states and 102 transitions. [2024-06-14 12:46:12,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 120 transitions, 1290 flow [2024-06-14 12:46:12,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 120 transitions, 1233 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-14 12:46:12,920 INFO L231 Difference]: Finished difference. Result has 128 places, 109 transitions, 1010 flow [2024-06-14 12:46:12,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1010, PETRI_PLACES=128, PETRI_TRANSITIONS=109} [2024-06-14 12:46:12,921 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-14 12:46:12,921 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 109 transitions, 1010 flow [2024-06-14 12:46:12,921 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) [2024-06-14 12:46:12,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:12,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:12,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:46:12,922 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)] === [2024-06-14 12:46:12,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:12,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1721134590, now seen corresponding path program 5 times [2024-06-14 12:46:12,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:12,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96497211] [2024-06-14 12:46:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:12,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:13,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:13,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96497211] [2024-06-14 12:46:13,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96497211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:13,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:13,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:13,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981697745] [2024-06-14 12:46:13,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:13,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:13,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:13,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:13,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:14,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:14,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 109 transitions, 1010 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) [2024-06-14 12:46:14,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:14,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:14,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:14,331 INFO L124 PetriNetUnfolderBase]: 366/636 cut-off events. [2024-06-14 12:46:14,331 INFO L125 PetriNetUnfolderBase]: For 22907/22907 co-relation queries the response was YES. [2024-06-14 12:46:14,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4319 conditions, 636 events. 366/636 cut-off events. For 22907/22907 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2584 event pairs, 52 based on Foata normal form. 1/636 useless extension candidates. Maximal degree in co-relation 4254. Up to 538 conditions per place. [2024-06-14 12:46:14,335 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 31 changer transitions 0/132 dead transitions. [2024-06-14 12:46:14,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 132 transitions, 1442 flow [2024-06-14 12:46:14,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:14,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:14,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:46:14,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-14 12:46:14,336 INFO L175 Difference]: Start difference. First operand has 128 places, 109 transitions, 1010 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:46:14,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 132 transitions, 1442 flow [2024-06-14 12:46:14,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 132 transitions, 1387 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:14,368 INFO L231 Difference]: Finished difference. Result has 131 places, 116 transitions, 1108 flow [2024-06-14 12:46:14,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1108, PETRI_PLACES=131, PETRI_TRANSITIONS=116} [2024-06-14 12:46:14,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-14 12:46:14,369 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 116 transitions, 1108 flow [2024-06-14 12:46:14,369 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) [2024-06-14 12:46:14,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:14,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:14,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:46:14,369 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)] === [2024-06-14 12:46:14,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1262534101, now seen corresponding path program 2 times [2024-06-14 12:46:14,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:14,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525219807] [2024-06-14 12:46:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:14,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:15,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:15,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525219807] [2024-06-14 12:46:15,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525219807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:15,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:15,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:15,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019857612] [2024-06-14 12:46:15,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:15,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:15,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:15,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:15,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:15,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:15,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 116 transitions, 1108 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) [2024-06-14 12:46:15,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:15,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:15,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:15,726 INFO L124 PetriNetUnfolderBase]: 382/662 cut-off events. [2024-06-14 12:46:15,727 INFO L125 PetriNetUnfolderBase]: For 26184/26184 co-relation queries the response was YES. [2024-06-14 12:46:15,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4643 conditions, 662 events. 382/662 cut-off events. For 26184/26184 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2734 event pairs, 55 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 4575. Up to 573 conditions per place. [2024-06-14 12:46:15,731 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 108 selfloop transitions, 27 changer transitions 0/137 dead transitions. [2024-06-14 12:46:15,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 137 transitions, 1530 flow [2024-06-14 12:46:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:15,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:15,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:46:15,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:46:15,733 INFO L175 Difference]: Start difference. First operand has 131 places, 116 transitions, 1108 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:46:15,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 137 transitions, 1530 flow [2024-06-14 12:46:15,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 137 transitions, 1493 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-14 12:46:15,763 INFO L231 Difference]: Finished difference. Result has 136 places, 120 transitions, 1170 flow [2024-06-14 12:46:15,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1170, PETRI_PLACES=136, PETRI_TRANSITIONS=120} [2024-06-14 12:46:15,763 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-14 12:46:15,763 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 120 transitions, 1170 flow [2024-06-14 12:46:15,763 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) [2024-06-14 12:46:15,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:15,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:15,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:46:15,764 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)] === [2024-06-14 12:46:15,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:15,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1720932563, now seen corresponding path program 3 times [2024-06-14 12:46:15,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:15,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837356735] [2024-06-14 12:46:15,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:15,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:17,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:17,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837356735] [2024-06-14 12:46:17,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837356735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:17,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:17,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:17,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160655266] [2024-06-14 12:46:17,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:17,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:17,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:17,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:17,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:17,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:17,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 120 transitions, 1170 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) [2024-06-14 12:46:17,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:17,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:17,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:17,459 INFO L124 PetriNetUnfolderBase]: 378/656 cut-off events. [2024-06-14 12:46:17,459 INFO L125 PetriNetUnfolderBase]: For 26582/26582 co-relation queries the response was YES. [2024-06-14 12:46:17,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4655 conditions, 656 events. 378/656 cut-off events. For 26582/26582 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2714 event pairs, 48 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 4585. Up to 582 conditions per place. [2024-06-14 12:46:17,464 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 111 selfloop transitions, 23 changer transitions 0/136 dead transitions. [2024-06-14 12:46:17,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 136 transitions, 1486 flow [2024-06-14 12:46:17,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 12:46:17,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 12:46:17,465 INFO L175 Difference]: Start difference. First operand has 136 places, 120 transitions, 1170 flow. Second operand 9 states and 111 transitions. [2024-06-14 12:46:17,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 136 transitions, 1486 flow [2024-06-14 12:46:17,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 136 transitions, 1446 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 12:46:17,517 INFO L231 Difference]: Finished difference. Result has 140 places, 120 transitions, 1181 flow [2024-06-14 12:46:17,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1181, PETRI_PLACES=140, PETRI_TRANSITIONS=120} [2024-06-14 12:46:17,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-14 12:46:17,518 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 120 transitions, 1181 flow [2024-06-14 12:46:17,518 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) [2024-06-14 12:46:17,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:17,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:17,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:46:17,519 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)] === [2024-06-14 12:46:17,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:17,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1262332508, now seen corresponding path program 6 times [2024-06-14 12:46:17,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:17,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533146991] [2024-06-14 12:46:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:17,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:18,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:18,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533146991] [2024-06-14 12:46:18,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533146991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:18,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:18,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:18,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923322208] [2024-06-14 12:46:18,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:18,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:18,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:18,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:18,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:18,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:18,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 120 transitions, 1181 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) [2024-06-14 12:46:18,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:18,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:18,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:18,996 INFO L124 PetriNetUnfolderBase]: 372/647 cut-off events. [2024-06-14 12:46:18,996 INFO L125 PetriNetUnfolderBase]: For 26717/26717 co-relation queries the response was YES. [2024-06-14 12:46:18,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4589 conditions, 647 events. 372/647 cut-off events. For 26717/26717 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2665 event pairs, 48 based on Foata normal form. 3/649 useless extension candidates. Maximal degree in co-relation 4517. Up to 568 conditions per place. [2024-06-14 12:46:19,001 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 24 changer transitions 0/136 dead transitions. [2024-06-14 12:46:19,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 136 transitions, 1497 flow [2024-06-14 12:46:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:19,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 12:46:19,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:46:19,003 INFO L175 Difference]: Start difference. First operand has 140 places, 120 transitions, 1181 flow. Second operand 9 states and 112 transitions. [2024-06-14 12:46:19,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 136 transitions, 1497 flow [2024-06-14 12:46:19,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 136 transitions, 1432 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:19,064 INFO L231 Difference]: Finished difference. Result has 141 places, 120 transitions, 1170 flow [2024-06-14 12:46:19,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1170, PETRI_PLACES=141, PETRI_TRANSITIONS=120} [2024-06-14 12:46:19,065 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-14 12:46:19,065 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 120 transitions, 1170 flow [2024-06-14 12:46:19,065 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) [2024-06-14 12:46:19,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:19,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:19,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:46:19,066 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)] === [2024-06-14 12:46:19,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:19,066 INFO L85 PathProgramCache]: Analyzing trace with hash 275939062, now seen corresponding path program 7 times [2024-06-14 12:46:19,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:19,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609436548] [2024-06-14 12:46:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:19,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:20,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:20,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609436548] [2024-06-14 12:46:20,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609436548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:20,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:20,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:20,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719673557] [2024-06-14 12:46:20,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:20,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:20,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:20,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:20,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:20,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:20,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 120 transitions, 1170 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) [2024-06-14 12:46:20,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:20,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:20,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:20,419 INFO L124 PetriNetUnfolderBase]: 378/657 cut-off events. [2024-06-14 12:46:20,419 INFO L125 PetriNetUnfolderBase]: For 27538/27538 co-relation queries the response was YES. [2024-06-14 12:46:20,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4681 conditions, 657 events. 378/657 cut-off events. For 27538/27538 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2711 event pairs, 51 based on Foata normal form. 2/658 useless extension candidates. Maximal degree in co-relation 4608. Up to 538 conditions per place. [2024-06-14 12:46:20,424 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 106 selfloop transitions, 29 changer transitions 0/137 dead transitions. [2024-06-14 12:46:20,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 137 transitions, 1590 flow [2024-06-14 12:46:20,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:46:20,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 12:46:20,433 INFO L175 Difference]: Start difference. First operand has 141 places, 120 transitions, 1170 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:46:20,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 137 transitions, 1590 flow [2024-06-14 12:46:20,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 137 transitions, 1534 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:20,512 INFO L231 Difference]: Finished difference. Result has 142 places, 122 transitions, 1203 flow [2024-06-14 12:46:20,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1203, PETRI_PLACES=142, PETRI_TRANSITIONS=122} [2024-06-14 12:46:20,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-14 12:46:20,513 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 122 transitions, 1203 flow [2024-06-14 12:46:20,513 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) [2024-06-14 12:46:20,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:20,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:20,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:46:20,514 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)] === [2024-06-14 12:46:20,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:20,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2118771389, now seen corresponding path program 4 times [2024-06-14 12:46:20,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:20,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646210739] [2024-06-14 12:46:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:20,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:21,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:21,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646210739] [2024-06-14 12:46:21,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646210739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:21,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:21,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:21,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084424230] [2024-06-14 12:46:21,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:21,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:21,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:21,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:21,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:21,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:21,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 122 transitions, 1203 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) [2024-06-14 12:46:21,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:21,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:21,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:22,324 INFO L124 PetriNetUnfolderBase]: 384/667 cut-off events. [2024-06-14 12:46:22,324 INFO L125 PetriNetUnfolderBase]: For 29410/29410 co-relation queries the response was YES. [2024-06-14 12:46:22,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4789 conditions, 667 events. 384/667 cut-off events. For 29410/29410 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2756 event pairs, 57 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 4715. Up to 614 conditions per place. [2024-06-14 12:46:22,329 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 19 changer transitions 0/138 dead transitions. [2024-06-14 12:46:22,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 138 transitions, 1539 flow [2024-06-14 12:46:22,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:22,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 12:46:22,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-14 12:46:22,330 INFO L175 Difference]: Start difference. First operand has 142 places, 122 transitions, 1203 flow. Second operand 9 states and 106 transitions. [2024-06-14 12:46:22,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 138 transitions, 1539 flow [2024-06-14 12:46:22,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 1397 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 12:46:22,374 INFO L231 Difference]: Finished difference. Result has 142 places, 124 transitions, 1130 flow [2024-06-14 12:46:22,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=142, PETRI_TRANSITIONS=124} [2024-06-14 12:46:22,374 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-14 12:46:22,374 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 124 transitions, 1130 flow [2024-06-14 12:46:22,375 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) [2024-06-14 12:46:22,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:22,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:22,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:46:22,375 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)] === [2024-06-14 12:46:22,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:22,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2118771172, now seen corresponding path program 8 times [2024-06-14 12:46:22,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:22,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835512444] [2024-06-14 12:46:22,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:22,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:23,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:23,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835512444] [2024-06-14 12:46:23,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835512444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:23,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:23,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:23,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112518552] [2024-06-14 12:46:23,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:23,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:23,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:23,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:23,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:23,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 124 transitions, 1130 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) [2024-06-14 12:46:23,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:23,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:23,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:23,742 INFO L124 PetriNetUnfolderBase]: 402/697 cut-off events. [2024-06-14 12:46:23,742 INFO L125 PetriNetUnfolderBase]: For 33318/33318 co-relation queries the response was YES. [2024-06-14 12:46:23,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4786 conditions, 697 events. 402/697 cut-off events. For 33318/33318 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2921 event pairs, 59 based on Foata normal form. 6/702 useless extension candidates. Maximal degree in co-relation 4713. Up to 628 conditions per place. [2024-06-14 12:46:23,747 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 120 selfloop transitions, 20 changer transitions 0/142 dead transitions. [2024-06-14 12:46:23,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 142 transitions, 1489 flow [2024-06-14 12:46:23,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:23,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 12:46:23,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:46:23,749 INFO L175 Difference]: Start difference. First operand has 142 places, 124 transitions, 1130 flow. Second operand 9 states and 108 transitions. [2024-06-14 12:46:23,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 142 transitions, 1489 flow [2024-06-14 12:46:23,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 142 transitions, 1440 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:23,817 INFO L231 Difference]: Finished difference. Result has 144 places, 127 transitions, 1162 flow [2024-06-14 12:46:23,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1162, PETRI_PLACES=144, PETRI_TRANSITIONS=127} [2024-06-14 12:46:23,819 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-14 12:46:23,819 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 127 transitions, 1162 flow [2024-06-14 12:46:23,820 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) [2024-06-14 12:46:23,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:23,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:23,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:46:23,820 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)] === [2024-06-14 12:46:23,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:23,821 INFO L85 PathProgramCache]: Analyzing trace with hash -237074094, now seen corresponding path program 9 times [2024-06-14 12:46:23,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:23,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562470349] [2024-06-14 12:46:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:23,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:24,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:24,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562470349] [2024-06-14 12:46:24,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562470349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:24,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:24,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:24,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225065719] [2024-06-14 12:46:24,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:24,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:24,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:24,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:24,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:24,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:24,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 127 transitions, 1162 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) [2024-06-14 12:46:24,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:24,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:24,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:25,096 INFO L124 PetriNetUnfolderBase]: 408/707 cut-off events. [2024-06-14 12:46:25,096 INFO L125 PetriNetUnfolderBase]: For 32145/32145 co-relation queries the response was YES. [2024-06-14 12:46:25,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4909 conditions, 707 events. 408/707 cut-off events. For 32145/32145 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2996 event pairs, 51 based on Foata normal form. 2/708 useless extension candidates. Maximal degree in co-relation 4835. Up to 568 conditions per place. [2024-06-14 12:46:25,101 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 32 changer transitions 0/144 dead transitions. [2024-06-14 12:46:25,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 144 transitions, 1604 flow [2024-06-14 12:46:25,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:25,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:25,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:46:25,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 12:46:25,102 INFO L175 Difference]: Start difference. First operand has 144 places, 127 transitions, 1162 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:46:25,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 144 transitions, 1604 flow [2024-06-14 12:46:25,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 144 transitions, 1554 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:25,153 INFO L231 Difference]: Finished difference. Result has 146 places, 129 transitions, 1205 flow [2024-06-14 12:46:25,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1205, PETRI_PLACES=146, PETRI_TRANSITIONS=129} [2024-06-14 12:46:25,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-14 12:46:25,154 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 129 transitions, 1205 flow [2024-06-14 12:46:25,154 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) [2024-06-14 12:46:25,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:25,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:25,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:46:25,155 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)] === [2024-06-14 12:46:25,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:25,155 INFO L85 PathProgramCache]: Analyzing trace with hash 28842232, now seen corresponding path program 1 times [2024-06-14 12:46:25,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:25,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105031469] [2024-06-14 12:46:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:25,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:26,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:26,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105031469] [2024-06-14 12:46:26,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105031469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:26,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:26,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:26,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383176916] [2024-06-14 12:46:26,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:26,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:26,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:26,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:26,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:26,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:26,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 129 transitions, 1205 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) [2024-06-14 12:46:26,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:26,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:26,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:26,458 INFO L124 PetriNetUnfolderBase]: 406/704 cut-off events. [2024-06-14 12:46:26,459 INFO L125 PetriNetUnfolderBase]: For 32291/32291 co-relation queries the response was YES. [2024-06-14 12:46:26,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4912 conditions, 704 events. 406/704 cut-off events. For 32291/32291 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2984 event pairs, 66 based on Foata normal form. 1/704 useless extension candidates. Maximal degree in co-relation 4837. Up to 674 conditions per place. [2024-06-14 12:46:26,463 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 121 selfloop transitions, 16 changer transitions 0/139 dead transitions. [2024-06-14 12:46:26,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 139 transitions, 1523 flow [2024-06-14 12:46:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:46:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:46:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-14 12:46:26,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 12:46:26,466 INFO L175 Difference]: Start difference. First operand has 146 places, 129 transitions, 1205 flow. Second operand 8 states and 90 transitions. [2024-06-14 12:46:26,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 139 transitions, 1523 flow [2024-06-14 12:46:26,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 139 transitions, 1464 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:26,513 INFO L231 Difference]: Finished difference. Result has 148 places, 131 transitions, 1214 flow [2024-06-14 12:46:26,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1214, PETRI_PLACES=148, PETRI_TRANSITIONS=131} [2024-06-14 12:46:26,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-14 12:46:26,513 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 131 transitions, 1214 flow [2024-06-14 12:46:26,514 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) [2024-06-14 12:46:26,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:26,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:26,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:46:26,514 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)] === [2024-06-14 12:46:26,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:26,514 INFO L85 PathProgramCache]: Analyzing trace with hash 19628443, now seen corresponding path program 5 times [2024-06-14 12:46:26,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:26,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297572908] [2024-06-14 12:46:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:27,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:27,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297572908] [2024-06-14 12:46:27,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297572908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:27,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:27,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:27,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341589448] [2024-06-14 12:46:27,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:27,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:27,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:27,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:27,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:27,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:27,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 131 transitions, 1214 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) [2024-06-14 12:46:27,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:27,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:27,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:28,016 INFO L124 PetriNetUnfolderBase]: 412/714 cut-off events. [2024-06-14 12:46:28,016 INFO L125 PetriNetUnfolderBase]: For 34655/34655 co-relation queries the response was YES. [2024-06-14 12:46:28,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4965 conditions, 714 events. 412/714 cut-off events. For 34655/34655 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3033 event pairs, 65 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4889. Up to 673 conditions per place. [2024-06-14 12:46:28,020 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 127 selfloop transitions, 16 changer transitions 0/145 dead transitions. [2024-06-14 12:46:28,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 145 transitions, 1560 flow [2024-06-14 12:46:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 12:46:28,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 12:46:28,022 INFO L175 Difference]: Start difference. First operand has 148 places, 131 transitions, 1214 flow. Second operand 9 states and 102 transitions. [2024-06-14 12:46:28,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 145 transitions, 1560 flow [2024-06-14 12:46:28,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 145 transitions, 1518 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:28,074 INFO L231 Difference]: Finished difference. Result has 151 places, 133 transitions, 1239 flow [2024-06-14 12:46:28,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1239, PETRI_PLACES=151, PETRI_TRANSITIONS=133} [2024-06-14 12:46:28,075 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-14 12:46:28,075 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 133 transitions, 1239 flow [2024-06-14 12:46:28,076 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) [2024-06-14 12:46:28,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:28,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:28,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:46:28,081 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)] === [2024-06-14 12:46:28,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash -237073877, now seen corresponding path program 6 times [2024-06-14 12:46:28,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:28,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219248561] [2024-06-14 12:46:28,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:28,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:29,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:29,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219248561] [2024-06-14 12:46:29,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219248561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:29,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:29,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:29,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607067928] [2024-06-14 12:46:29,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:29,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:29,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:29,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:29,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:29,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:29,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 133 transitions, 1239 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) [2024-06-14 12:46:29,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:29,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:29,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:29,493 INFO L124 PetriNetUnfolderBase]: 408/708 cut-off events. [2024-06-14 12:46:29,493 INFO L125 PetriNetUnfolderBase]: For 34531/34531 co-relation queries the response was YES. [2024-06-14 12:46:29,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4899 conditions, 708 events. 408/708 cut-off events. For 34531/34531 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3015 event pairs, 57 based on Foata normal form. 2/709 useless extension candidates. Maximal degree in co-relation 4822. Up to 626 conditions per place. [2024-06-14 12:46:29,498 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 116 selfloop transitions, 27 changer transitions 0/145 dead transitions. [2024-06-14 12:46:29,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 145 transitions, 1559 flow [2024-06-14 12:46:29,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:29,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 12:46:29,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 12:46:29,499 INFO L175 Difference]: Start difference. First operand has 151 places, 133 transitions, 1239 flow. Second operand 9 states and 105 transitions. [2024-06-14 12:46:29,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 145 transitions, 1559 flow [2024-06-14 12:46:29,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 145 transitions, 1508 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:29,557 INFO L231 Difference]: Finished difference. Result has 153 places, 133 transitions, 1247 flow [2024-06-14 12:46:29,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1247, PETRI_PLACES=153, PETRI_TRANSITIONS=133} [2024-06-14 12:46:29,557 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-14 12:46:29,557 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 133 transitions, 1247 flow [2024-06-14 12:46:29,558 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) [2024-06-14 12:46:29,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:29,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:29,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:46:29,558 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)] === [2024-06-14 12:46:29,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:29,558 INFO L85 PathProgramCache]: Analyzing trace with hash 28832653, now seen corresponding path program 7 times [2024-06-14 12:46:29,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:29,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136089001] [2024-06-14 12:46:29,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:29,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:30,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:30,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136089001] [2024-06-14 12:46:30,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136089001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:30,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:30,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:30,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137928108] [2024-06-14 12:46:30,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:30,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:30,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:30,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:30,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:30,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:30,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 133 transitions, 1247 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) [2024-06-14 12:46:30,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:30,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:30,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:30,944 INFO L124 PetriNetUnfolderBase]: 404/702 cut-off events. [2024-06-14 12:46:30,945 INFO L125 PetriNetUnfolderBase]: For 34189/34189 co-relation queries the response was YES. [2024-06-14 12:46:30,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 702 events. 404/702 cut-off events. For 34189/34189 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2978 event pairs, 65 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 4760. Up to 662 conditions per place. [2024-06-14 12:46:30,949 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 125 selfloop transitions, 18 changer transitions 0/145 dead transitions. [2024-06-14 12:46:30,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 145 transitions, 1581 flow [2024-06-14 12:46:30,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:30,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 12:46:30,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-14 12:46:30,950 INFO L175 Difference]: Start difference. First operand has 153 places, 133 transitions, 1247 flow. Second operand 9 states and 100 transitions. [2024-06-14 12:46:30,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 145 transitions, 1581 flow [2024-06-14 12:46:31,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 1443 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-14 12:46:31,008 INFO L231 Difference]: Finished difference. Result has 152 places, 135 transitions, 1177 flow [2024-06-14 12:46:31,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1177, PETRI_PLACES=152, PETRI_TRANSITIONS=135} [2024-06-14 12:46:31,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-14 12:46:31,009 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 135 transitions, 1177 flow [2024-06-14 12:46:31,009 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) [2024-06-14 12:46:31,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:31,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:31,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:46:31,010 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)] === [2024-06-14 12:46:31,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:31,010 INFO L85 PathProgramCache]: Analyzing trace with hash 938445506, now seen corresponding path program 10 times [2024-06-14 12:46:31,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:31,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599446458] [2024-06-14 12:46:31,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:31,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:31,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:31,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599446458] [2024-06-14 12:46:31,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599446458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:31,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:31,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:31,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856273823] [2024-06-14 12:46:31,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:31,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:31,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:31,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:31,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:32,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:32,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 135 transitions, 1177 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) [2024-06-14 12:46:32,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:32,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:32,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:32,365 INFO L124 PetriNetUnfolderBase]: 398/693 cut-off events. [2024-06-14 12:46:32,365 INFO L125 PetriNetUnfolderBase]: For 33596/33596 co-relation queries the response was YES. [2024-06-14 12:46:32,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4524 conditions, 693 events. 398/693 cut-off events. For 33596/33596 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2934 event pairs, 55 based on Foata normal form. 3/695 useless extension candidates. Maximal degree in co-relation 4447. Up to 647 conditions per place. [2024-06-14 12:46:32,370 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 17 changer transitions 0/150 dead transitions. [2024-06-14 12:46:32,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 150 transitions, 1539 flow [2024-06-14 12:46:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:32,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:32,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 12:46:32,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 12:46:32,372 INFO L175 Difference]: Start difference. First operand has 152 places, 135 transitions, 1177 flow. Second operand 9 states and 103 transitions. [2024-06-14 12:46:32,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 150 transitions, 1539 flow [2024-06-14 12:46:32,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 150 transitions, 1489 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:32,447 INFO L231 Difference]: Finished difference. Result has 154 places, 138 transitions, 1205 flow [2024-06-14 12:46:32,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1205, PETRI_PLACES=154, PETRI_TRANSITIONS=138} [2024-06-14 12:46:32,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-14 12:46:32,447 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 138 transitions, 1205 flow [2024-06-14 12:46:32,447 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) [2024-06-14 12:46:32,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:32,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:32,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:46:32,448 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)] === [2024-06-14 12:46:32,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:32,449 INFO L85 PathProgramCache]: Analyzing trace with hash -767822428, now seen corresponding path program 1 times [2024-06-14 12:46:32,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:32,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973929640] [2024-06-14 12:46:32,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:32,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:33,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:33,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:33,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973929640] [2024-06-14 12:46:33,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973929640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:33,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:33,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:33,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872625648] [2024-06-14 12:46:33,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:33,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:33,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:33,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:33,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:33,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:33,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 138 transitions, 1205 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) [2024-06-14 12:46:33,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:33,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:33,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:34,331 INFO L124 PetriNetUnfolderBase]: 409/714 cut-off events. [2024-06-14 12:46:34,331 INFO L125 PetriNetUnfolderBase]: For 36181/36181 co-relation queries the response was YES. [2024-06-14 12:46:34,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4774 conditions, 714 events. 409/714 cut-off events. For 36181/36181 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3054 event pairs, 43 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4696. Up to 626 conditions per place. [2024-06-14 12:46:34,336 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 144 selfloop transitions, 19 changer transitions 0/165 dead transitions. [2024-06-14 12:46:34,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 165 transitions, 1713 flow [2024-06-14 12:46:34,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:34,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:34,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:46:34,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 12:46:34,338 INFO L175 Difference]: Start difference. First operand has 154 places, 138 transitions, 1205 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:46:34,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 165 transitions, 1713 flow [2024-06-14 12:46:34,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 165 transitions, 1665 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:34,398 INFO L231 Difference]: Finished difference. Result has 158 places, 140 transitions, 1225 flow [2024-06-14 12:46:34,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1225, PETRI_PLACES=158, PETRI_TRANSITIONS=140} [2024-06-14 12:46:34,399 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-14 12:46:34,399 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 140 transitions, 1225 flow [2024-06-14 12:46:34,399 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) [2024-06-14 12:46:34,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:34,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:34,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:46:34,400 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)] === [2024-06-14 12:46:34,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:34,400 INFO L85 PathProgramCache]: Analyzing trace with hash -654258268, now seen corresponding path program 2 times [2024-06-14 12:46:34,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:34,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338718027] [2024-06-14 12:46:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:34,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:35,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:35,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338718027] [2024-06-14 12:46:35,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338718027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:35,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:35,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:35,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571505179] [2024-06-14 12:46:35,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:35,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:35,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:35,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:35,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:35,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:35,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 140 transitions, 1225 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) [2024-06-14 12:46:35,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:35,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:35,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:36,441 INFO L124 PetriNetUnfolderBase]: 416/727 cut-off events. [2024-06-14 12:46:36,441 INFO L125 PetriNetUnfolderBase]: For 37875/37875 co-relation queries the response was YES. [2024-06-14 12:46:36,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4874 conditions, 727 events. 416/727 cut-off events. For 37875/37875 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3144 event pairs, 60 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 4795. Up to 667 conditions per place. [2024-06-14 12:46:36,447 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 144 selfloop transitions, 20 changer transitions 0/166 dead transitions. [2024-06-14 12:46:36,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 166 transitions, 1650 flow [2024-06-14 12:46:36,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:36,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 12:46:36,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 12:46:36,449 INFO L175 Difference]: Start difference. First operand has 158 places, 140 transitions, 1225 flow. Second operand 11 states and 128 transitions. [2024-06-14 12:46:36,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 166 transitions, 1650 flow [2024-06-14 12:46:36,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 166 transitions, 1602 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:36,514 INFO L231 Difference]: Finished difference. Result has 162 places, 143 transitions, 1256 flow [2024-06-14 12:46:36,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1256, PETRI_PLACES=162, PETRI_TRANSITIONS=143} [2024-06-14 12:46:36,514 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-14 12:46:36,514 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 143 transitions, 1256 flow [2024-06-14 12:46:36,514 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) [2024-06-14 12:46:36,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:36,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:36,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:46:36,515 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)] === [2024-06-14 12:46:36,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:36,515 INFO L85 PathProgramCache]: Analyzing trace with hash -654258144, now seen corresponding path program 1 times [2024-06-14 12:46:36,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:36,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327044495] [2024-06-14 12:46:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:36,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:38,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:38,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327044495] [2024-06-14 12:46:38,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327044495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:38,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:38,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:38,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131490368] [2024-06-14 12:46:38,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:38,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:38,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:38,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:38,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:38,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:38,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 143 transitions, 1256 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) [2024-06-14 12:46:38,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:38,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:38,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:38,497 INFO L124 PetriNetUnfolderBase]: 419/732 cut-off events. [2024-06-14 12:46:38,497 INFO L125 PetriNetUnfolderBase]: For 38437/38437 co-relation queries the response was YES. [2024-06-14 12:46:38,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4916 conditions, 732 events. 419/732 cut-off events. For 38437/38437 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3171 event pairs, 59 based on Foata normal form. 1/732 useless extension candidates. Maximal degree in co-relation 4836. Up to 666 conditions per place. [2024-06-14 12:46:38,502 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 23 changer transitions 0/168 dead transitions. [2024-06-14 12:46:38,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 168 transitions, 1764 flow [2024-06-14 12:46:38,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:38,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 12:46:38,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 12:46:38,503 INFO L175 Difference]: Start difference. First operand has 162 places, 143 transitions, 1256 flow. Second operand 11 states and 131 transitions. [2024-06-14 12:46:38,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 168 transitions, 1764 flow [2024-06-14 12:46:38,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 168 transitions, 1724 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:38,568 INFO L231 Difference]: Finished difference. Result has 165 places, 145 transitions, 1285 flow [2024-06-14 12:46:38,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1285, PETRI_PLACES=165, PETRI_TRANSITIONS=145} [2024-06-14 12:46:38,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-14 12:46:38,569 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 145 transitions, 1285 flow [2024-06-14 12:46:38,569 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) [2024-06-14 12:46:38,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:38,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:38,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:46:38,569 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)] === [2024-06-14 12:46:38,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:38,570 INFO L85 PathProgramCache]: Analyzing trace with hash -654138174, now seen corresponding path program 2 times [2024-06-14 12:46:38,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:38,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949877437] [2024-06-14 12:46:38,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:38,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:40,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:40,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949877437] [2024-06-14 12:46:40,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949877437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:40,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:40,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:40,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478917962] [2024-06-14 12:46:40,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:40,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:40,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:40,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:40,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:40,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:40,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 145 transitions, 1285 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) [2024-06-14 12:46:40,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:40,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:40,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:40,429 INFO L124 PetriNetUnfolderBase]: 417/729 cut-off events. [2024-06-14 12:46:40,429 INFO L125 PetriNetUnfolderBase]: For 38836/38836 co-relation queries the response was YES. [2024-06-14 12:46:40,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 729 events. 417/729 cut-off events. For 38836/38836 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3164 event pairs, 59 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 4813. Up to 664 conditions per place. [2024-06-14 12:46:40,436 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 138 selfloop transitions, 22 changer transitions 0/162 dead transitions. [2024-06-14 12:46:40,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 162 transitions, 1653 flow [2024-06-14 12:46:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:40,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 12:46:40,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-14 12:46:40,437 INFO L175 Difference]: Start difference. First operand has 165 places, 145 transitions, 1285 flow. Second operand 9 states and 109 transitions. [2024-06-14 12:46:40,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 162 transitions, 1653 flow [2024-06-14 12:46:40,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 162 transitions, 1602 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:40,496 INFO L231 Difference]: Finished difference. Result has 166 places, 145 transitions, 1288 flow [2024-06-14 12:46:40,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1288, PETRI_PLACES=166, PETRI_TRANSITIONS=145} [2024-06-14 12:46:40,497 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-14 12:46:40,497 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 145 transitions, 1288 flow [2024-06-14 12:46:40,497 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) [2024-06-14 12:46:40,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:40,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:40,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:46:40,498 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)] === [2024-06-14 12:46:40,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:40,498 INFO L85 PathProgramCache]: Analyzing trace with hash -654142948, now seen corresponding path program 3 times [2024-06-14 12:46:40,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:40,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955147942] [2024-06-14 12:46:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:40,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:42,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955147942] [2024-06-14 12:46:42,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955147942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:42,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:42,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:42,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294406809] [2024-06-14 12:46:42,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:42,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:42,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:42,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:42,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:42,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:42,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 145 transitions, 1288 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) [2024-06-14 12:46:42,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:42,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:42,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:42,675 INFO L124 PetriNetUnfolderBase]: 414/724 cut-off events. [2024-06-14 12:46:42,675 INFO L125 PetriNetUnfolderBase]: For 39244/39244 co-relation queries the response was YES. [2024-06-14 12:46:42,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4811 conditions, 724 events. 414/724 cut-off events. For 39244/39244 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3134 event pairs, 58 based on Foata normal form. 2/725 useless extension candidates. Maximal degree in co-relation 4729. Up to 676 conditions per place. [2024-06-14 12:46:42,679 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 16 changer transitions 0/164 dead transitions. [2024-06-14 12:46:42,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 164 transitions, 1664 flow [2024-06-14 12:46:42,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 12:46:42,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:46:42,681 INFO L175 Difference]: Start difference. First operand has 166 places, 145 transitions, 1288 flow. Second operand 10 states and 115 transitions. [2024-06-14 12:46:42,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 164 transitions, 1664 flow [2024-06-14 12:46:42,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 164 transitions, 1592 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:46:42,769 INFO L231 Difference]: Finished difference. Result has 166 places, 145 transitions, 1252 flow [2024-06-14 12:46:42,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1252, PETRI_PLACES=166, PETRI_TRANSITIONS=145} [2024-06-14 12:46:42,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-14 12:46:42,770 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 145 transitions, 1252 flow [2024-06-14 12:46:42,770 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) [2024-06-14 12:46:42,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:42,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:42,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:46:42,771 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)] === [2024-06-14 12:46:42,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:42,771 INFO L85 PathProgramCache]: Analyzing trace with hash -764960508, now seen corresponding path program 1 times [2024-06-14 12:46:42,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:42,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706627806] [2024-06-14 12:46:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:42,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:43,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:43,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706627806] [2024-06-14 12:46:43,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706627806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:43,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:43,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:43,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530437041] [2024-06-14 12:46:43,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:43,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:43,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:43,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:43,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:44,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:44,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 145 transitions, 1252 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) [2024-06-14 12:46:44,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:44,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:44,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:44,514 INFO L124 PetriNetUnfolderBase]: 436/760 cut-off events. [2024-06-14 12:46:44,514 INFO L125 PetriNetUnfolderBase]: For 44157/44157 co-relation queries the response was YES. [2024-06-14 12:46:44,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5070 conditions, 760 events. 436/760 cut-off events. For 44157/44157 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3319 event pairs, 62 based on Foata normal form. 4/763 useless extension candidates. Maximal degree in co-relation 4988. Up to 670 conditions per place. [2024-06-14 12:46:44,521 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 27 changer transitions 0/171 dead transitions. [2024-06-14 12:46:44,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 171 transitions, 1814 flow [2024-06-14 12:46:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:44,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:46:44,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:46:44,522 INFO L175 Difference]: Start difference. First operand has 166 places, 145 transitions, 1252 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:46:44,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 171 transitions, 1814 flow [2024-06-14 12:46:44,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 171 transitions, 1766 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 12:46:44,597 INFO L231 Difference]: Finished difference. Result has 166 places, 150 transitions, 1338 flow [2024-06-14 12:46:44,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1338, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2024-06-14 12:46:44,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-14 12:46:44,598 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 1338 flow [2024-06-14 12:46:44,598 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) [2024-06-14 12:46:44,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:44,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:44,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:46:44,599 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)] === [2024-06-14 12:46:44,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:44,599 INFO L85 PathProgramCache]: Analyzing trace with hash -649669338, now seen corresponding path program 2 times [2024-06-14 12:46:44,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:44,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156342431] [2024-06-14 12:46:44,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:44,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:45,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:45,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156342431] [2024-06-14 12:46:45,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156342431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:45,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:45,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:45,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24873414] [2024-06-14 12:46:45,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:45,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:45,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:45,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:45,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:45,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:45,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 1338 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) [2024-06-14 12:46:45,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:45,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:45,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:46,187 INFO L124 PetriNetUnfolderBase]: 498/860 cut-off events. [2024-06-14 12:46:46,187 INFO L125 PetriNetUnfolderBase]: For 58624/58624 co-relation queries the response was YES. [2024-06-14 12:46:46,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6260 conditions, 860 events. 498/860 cut-off events. For 58624/58624 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3879 event pairs, 47 based on Foata normal form. 4/863 useless extension candidates. Maximal degree in co-relation 6177. Up to 392 conditions per place. [2024-06-14 12:46:46,195 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 118 selfloop transitions, 67 changer transitions 0/187 dead transitions. [2024-06-14 12:46:46,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 187 transitions, 2356 flow [2024-06-14 12:46:46,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:46,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-14 12:46:46,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-14 12:46:46,197 INFO L175 Difference]: Start difference. First operand has 166 places, 150 transitions, 1338 flow. Second operand 10 states and 142 transitions. [2024-06-14 12:46:46,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 187 transitions, 2356 flow [2024-06-14 12:46:46,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 187 transitions, 2290 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:46,282 INFO L231 Difference]: Finished difference. Result has 170 places, 159 transitions, 1558 flow [2024-06-14 12:46:46,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1558, PETRI_PLACES=170, PETRI_TRANSITIONS=159} [2024-06-14 12:46:46,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-14 12:46:46,283 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 159 transitions, 1558 flow [2024-06-14 12:46:46,283 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) [2024-06-14 12:46:46,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:46,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:46,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:46:46,284 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)] === [2024-06-14 12:46:46,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:46,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1742217052, now seen corresponding path program 4 times [2024-06-14 12:46:46,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:46,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657508349] [2024-06-14 12:46:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:46,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:47,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:47,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657508349] [2024-06-14 12:46:47,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657508349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:47,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:47,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:47,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368859124] [2024-06-14 12:46:47,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:47,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:47,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:47,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:47,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:47,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:47,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 159 transitions, 1558 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) [2024-06-14 12:46:47,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:47,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:47,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:47,933 INFO L124 PetriNetUnfolderBase]: 502/868 cut-off events. [2024-06-14 12:46:47,934 INFO L125 PetriNetUnfolderBase]: For 59050/59050 co-relation queries the response was YES. [2024-06-14 12:46:47,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6534 conditions, 868 events. 502/868 cut-off events. For 59050/59050 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3913 event pairs, 73 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 6449. Up to 793 conditions per place. [2024-06-14 12:46:47,940 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 149 selfloop transitions, 29 changer transitions 0/180 dead transitions. [2024-06-14 12:46:47,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 180 transitions, 2018 flow [2024-06-14 12:46:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:47,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:47,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 12:46:47,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-14 12:46:47,941 INFO L175 Difference]: Start difference. First operand has 170 places, 159 transitions, 1558 flow. Second operand 10 states and 117 transitions. [2024-06-14 12:46:47,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 180 transitions, 2018 flow [2024-06-14 12:46:48,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 180 transitions, 1910 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-14 12:46:48,029 INFO L231 Difference]: Finished difference. Result has 177 places, 164 transitions, 1592 flow [2024-06-14 12:46:48,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1592, PETRI_PLACES=177, PETRI_TRANSITIONS=164} [2024-06-14 12:46:48,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-14 12:46:48,030 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 164 transitions, 1592 flow [2024-06-14 12:46:48,031 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) [2024-06-14 12:46:48,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:48,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:48,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:46:48,031 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)] === [2024-06-14 12:46:48,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:48,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1981196392, now seen corresponding path program 3 times [2024-06-14 12:46:48,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:48,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397545970] [2024-06-14 12:46:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:48,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:49,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:49,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397545970] [2024-06-14 12:46:49,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397545970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:49,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:49,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:49,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336805473] [2024-06-14 12:46:49,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:49,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:49,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:49,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:49,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:49,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 164 transitions, 1592 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) [2024-06-14 12:46:49,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:49,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:49,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:49,634 INFO L124 PetriNetUnfolderBase]: 518/894 cut-off events. [2024-06-14 12:46:49,634 INFO L125 PetriNetUnfolderBase]: For 63978/63978 co-relation queries the response was YES. [2024-06-14 12:46:49,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6761 conditions, 894 events. 518/894 cut-off events. For 63978/63978 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4071 event pairs, 38 based on Foata normal form. 2/895 useless extension candidates. Maximal degree in co-relation 6673. Up to 411 conditions per place. [2024-06-14 12:46:49,640 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 111 selfloop transitions, 81 changer transitions 0/194 dead transitions. [2024-06-14 12:46:49,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 194 transitions, 2454 flow [2024-06-14 12:46:49,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-14 12:46:49,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-14 12:46:49,641 INFO L175 Difference]: Start difference. First operand has 177 places, 164 transitions, 1592 flow. Second operand 10 states and 137 transitions. [2024-06-14 12:46:49,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 194 transitions, 2454 flow [2024-06-14 12:46:49,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 194 transitions, 2399 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-14 12:46:49,727 INFO L231 Difference]: Finished difference. Result has 183 places, 169 transitions, 1793 flow [2024-06-14 12:46:49,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1793, PETRI_PLACES=183, PETRI_TRANSITIONS=169} [2024-06-14 12:46:49,728 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-14 12:46:49,728 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 169 transitions, 1793 flow [2024-06-14 12:46:49,728 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) [2024-06-14 12:46:49,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:49,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:49,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:46:49,728 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)] === [2024-06-14 12:46:49,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:49,728 INFO L85 PathProgramCache]: Analyzing trace with hash -649496358, now seen corresponding path program 4 times [2024-06-14 12:46:49,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:49,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918459185] [2024-06-14 12:46:49,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:49,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:50,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:50,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:50,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918459185] [2024-06-14 12:46:50,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918459185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:50,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:50,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:50,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231662435] [2024-06-14 12:46:50,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:50,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:50,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:50,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:50,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:51,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:51,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 169 transitions, 1793 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) [2024-06-14 12:46:51,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:51,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:51,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:51,483 INFO L124 PetriNetUnfolderBase]: 510/882 cut-off events. [2024-06-14 12:46:51,484 INFO L125 PetriNetUnfolderBase]: For 64240/64240 co-relation queries the response was YES. [2024-06-14 12:46:51,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6841 conditions, 882 events. 510/882 cut-off events. For 64240/64240 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4017 event pairs, 42 based on Foata normal form. 4/885 useless extension candidates. Maximal degree in co-relation 6750. Up to 407 conditions per place. [2024-06-14 12:46:51,494 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 74 changer transitions 0/195 dead transitions. [2024-06-14 12:46:51,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 195 transitions, 2623 flow [2024-06-14 12:46:51,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:51,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-14 12:46:51,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-14 12:46:51,495 INFO L175 Difference]: Start difference. First operand has 183 places, 169 transitions, 1793 flow. Second operand 10 states and 138 transitions. [2024-06-14 12:46:51,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 195 transitions, 2623 flow [2024-06-14 12:46:51,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 195 transitions, 2457 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:51,666 INFO L231 Difference]: Finished difference. Result has 187 places, 169 transitions, 1781 flow [2024-06-14 12:46:51,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1781, PETRI_PLACES=187, PETRI_TRANSITIONS=169} [2024-06-14 12:46:51,666 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-14 12:46:51,666 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 169 transitions, 1781 flow [2024-06-14 12:46:51,667 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) [2024-06-14 12:46:51,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:51,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:51,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:46:51,667 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)] === [2024-06-14 12:46:51,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:51,667 INFO L85 PathProgramCache]: Analyzing trace with hash -484035164, now seen corresponding path program 5 times [2024-06-14 12:46:51,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:51,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379607034] [2024-06-14 12:46:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:51,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:52,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:52,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379607034] [2024-06-14 12:46:52,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379607034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:52,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:52,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:52,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473442023] [2024-06-14 12:46:52,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:52,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:52,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:52,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:52,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:52,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:52,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 169 transitions, 1781 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) [2024-06-14 12:46:52,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:52,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:52,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:53,281 INFO L124 PetriNetUnfolderBase]: 514/890 cut-off events. [2024-06-14 12:46:53,281 INFO L125 PetriNetUnfolderBase]: For 63832/63832 co-relation queries the response was YES. [2024-06-14 12:46:53,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6870 conditions, 890 events. 514/890 cut-off events. For 63832/63832 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4060 event pairs, 66 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 6778. Up to 848 conditions per place. [2024-06-14 12:46:53,288 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 162 selfloop transitions, 18 changer transitions 0/182 dead transitions. [2024-06-14 12:46:53,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 182 transitions, 2187 flow [2024-06-14 12:46:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:53,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:53,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 12:46:53,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 12:46:53,290 INFO L175 Difference]: Start difference. First operand has 187 places, 169 transitions, 1781 flow. Second operand 9 states and 103 transitions. [2024-06-14 12:46:53,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 182 transitions, 2187 flow [2024-06-14 12:46:53,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 182 transitions, 2018 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:46:53,425 INFO L231 Difference]: Finished difference. Result has 187 places, 170 transitions, 1670 flow [2024-06-14 12:46:53,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1670, PETRI_PLACES=187, PETRI_TRANSITIONS=170} [2024-06-14 12:46:53,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-14 12:46:53,426 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 170 transitions, 1670 flow [2024-06-14 12:46:53,426 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) [2024-06-14 12:46:53,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:53,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:53,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:46:53,427 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)] === [2024-06-14 12:46:53,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:53,427 INFO L85 PathProgramCache]: Analyzing trace with hash -484030204, now seen corresponding path program 5 times [2024-06-14 12:46:53,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:53,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431733693] [2024-06-14 12:46:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:53,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:54,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:54,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431733693] [2024-06-14 12:46:54,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431733693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:54,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:54,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:54,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036295232] [2024-06-14 12:46:54,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:54,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:54,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:54,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:54,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:54,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 170 transitions, 1670 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) [2024-06-14 12:46:54,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:54,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:54,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:55,083 INFO L124 PetriNetUnfolderBase]: 556/958 cut-off events. [2024-06-14 12:46:55,083 INFO L125 PetriNetUnfolderBase]: For 77653/77653 co-relation queries the response was YES. [2024-06-14 12:46:55,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7497 conditions, 958 events. 556/958 cut-off events. For 77653/77653 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4439 event pairs, 56 based on Foata normal form. 4/961 useless extension candidates. Maximal degree in co-relation 7404. Up to 769 conditions per place. [2024-06-14 12:46:55,090 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 156 selfloop transitions, 41 changer transitions 0/199 dead transitions. [2024-06-14 12:46:55,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 199 transitions, 2488 flow [2024-06-14 12:46:55,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:46:55,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-14 12:46:55,091 INFO L175 Difference]: Start difference. First operand has 187 places, 170 transitions, 1670 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:46:55,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 199 transitions, 2488 flow [2024-06-14 12:46:55,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 199 transitions, 2440 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:55,193 INFO L231 Difference]: Finished difference. Result has 190 places, 177 transitions, 1839 flow [2024-06-14 12:46:55,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1839, PETRI_PLACES=190, PETRI_TRANSITIONS=177} [2024-06-14 12:46:55,194 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-14 12:46:55,194 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 177 transitions, 1839 flow [2024-06-14 12:46:55,194 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) [2024-06-14 12:46:55,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:55,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:55,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:46:55,195 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)] === [2024-06-14 12:46:55,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:55,195 INFO L85 PathProgramCache]: Analyzing trace with hash -477355036, now seen corresponding path program 1 times [2024-06-14 12:46:55,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:55,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049863734] [2024-06-14 12:46:55,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:55,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:56,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:56,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049863734] [2024-06-14 12:46:56,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049863734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:56,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:56,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:56,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280168963] [2024-06-14 12:46:56,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:56,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:56,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:56,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:56,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:57,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:57,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 177 transitions, 1839 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) [2024-06-14 12:46:57,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:57,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:57,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:57,406 INFO L124 PetriNetUnfolderBase]: 560/966 cut-off events. [2024-06-14 12:46:57,406 INFO L125 PetriNetUnfolderBase]: For 76988/76988 co-relation queries the response was YES. [2024-06-14 12:46:57,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7707 conditions, 966 events. 560/966 cut-off events. For 76988/76988 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4498 event pairs, 64 based on Foata normal form. 2/967 useless extension candidates. Maximal degree in co-relation 7613. Up to 903 conditions per place. [2024-06-14 12:46:57,413 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 171 selfloop transitions, 21 changer transitions 0/194 dead transitions. [2024-06-14 12:46:57,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 194 transitions, 2291 flow [2024-06-14 12:46:57,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:57,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:57,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 12:46:57,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-14 12:46:57,414 INFO L175 Difference]: Start difference. First operand has 190 places, 177 transitions, 1839 flow. Second operand 9 states and 107 transitions. [2024-06-14 12:46:57,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 194 transitions, 2291 flow [2024-06-14 12:46:57,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 194 transitions, 2194 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-14 12:46:57,537 INFO L231 Difference]: Finished difference. Result has 195 places, 180 transitions, 1825 flow [2024-06-14 12:46:57,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1825, PETRI_PLACES=195, PETRI_TRANSITIONS=180} [2024-06-14 12:46:57,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-14 12:46:57,538 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 180 transitions, 1825 flow [2024-06-14 12:46:57,538 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) [2024-06-14 12:46:57,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:57,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:57,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:46:57,538 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)] === [2024-06-14 12:46:57,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:57,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1815557258, now seen corresponding path program 6 times [2024-06-14 12:46:57,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:57,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482519324] [2024-06-14 12:46:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:57,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:58,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:58,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482519324] [2024-06-14 12:46:58,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482519324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:58,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:58,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:58,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147532212] [2024-06-14 12:46:58,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:58,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:58,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:58,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:58,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:59,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:46:59,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 180 transitions, 1825 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) [2024-06-14 12:46:59,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:59,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:46:59,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:59,559 INFO L124 PetriNetUnfolderBase]: 601/1032 cut-off events. [2024-06-14 12:46:59,560 INFO L125 PetriNetUnfolderBase]: For 91588/91588 co-relation queries the response was YES. [2024-06-14 12:46:59,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8503 conditions, 1032 events. 601/1032 cut-off events. For 91588/91588 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4903 event pairs, 58 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 8406. Up to 803 conditions per place. [2024-06-14 12:46:59,572 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 159 selfloop transitions, 50 changer transitions 0/211 dead transitions. [2024-06-14 12:46:59,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 211 transitions, 2813 flow [2024-06-14 12:46:59,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:59,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:59,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 12:46:59,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-14 12:46:59,574 INFO L175 Difference]: Start difference. First operand has 195 places, 180 transitions, 1825 flow. Second operand 10 states and 134 transitions. [2024-06-14 12:46:59,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 211 transitions, 2813 flow [2024-06-14 12:46:59,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 211 transitions, 2763 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:59,713 INFO L231 Difference]: Finished difference. Result has 201 places, 189 transitions, 2062 flow [2024-06-14 12:46:59,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2062, PETRI_PLACES=201, PETRI_TRANSITIONS=189} [2024-06-14 12:46:59,713 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-14 12:46:59,714 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 189 transitions, 2062 flow [2024-06-14 12:46:59,714 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) [2024-06-14 12:46:59,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:59,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:59,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:46:59,714 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)] === [2024-06-14 12:46:59,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:59,715 INFO L85 PathProgramCache]: Analyzing trace with hash -477601300, now seen corresponding path program 3 times [2024-06-14 12:46:59,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:59,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259952063] [2024-06-14 12:46:59,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:59,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:00,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:00,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259952063] [2024-06-14 12:47:00,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259952063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:00,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:00,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:00,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941768276] [2024-06-14 12:47:00,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:00,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:00,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:00,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:00,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:01,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:01,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 189 transitions, 2062 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) [2024-06-14 12:47:01,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:01,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:01,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:01,407 INFO L124 PetriNetUnfolderBase]: 595/1023 cut-off events. [2024-06-14 12:47:01,407 INFO L125 PetriNetUnfolderBase]: For 91551/91551 co-relation queries the response was YES. [2024-06-14 12:47:01,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8571 conditions, 1023 events. 595/1023 cut-off events. For 91551/91551 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4849 event pairs, 72 based on Foata normal form. 3/1025 useless extension candidates. Maximal degree in co-relation 8471. Up to 933 conditions per place. [2024-06-14 12:47:01,416 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 28 changer transitions 0/206 dead transitions. [2024-06-14 12:47:01,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 206 transitions, 2520 flow [2024-06-14 12:47:01,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:01,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:47:01,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:47:01,417 INFO L175 Difference]: Start difference. First operand has 201 places, 189 transitions, 2062 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:47:01,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 206 transitions, 2520 flow [2024-06-14 12:47:01,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 206 transitions, 2419 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-14 12:47:01,597 INFO L231 Difference]: Finished difference. Result has 206 places, 189 transitions, 2023 flow [2024-06-14 12:47:01,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2023, PETRI_PLACES=206, PETRI_TRANSITIONS=189} [2024-06-14 12:47:01,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-14 12:47:01,598 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 189 transitions, 2023 flow [2024-06-14 12:47:01,598 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) [2024-06-14 12:47:01,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:01,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:01,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:47:01,599 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)] === [2024-06-14 12:47:01,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:01,599 INFO L85 PathProgramCache]: Analyzing trace with hash -477601114, now seen corresponding path program 7 times [2024-06-14 12:47:01,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:01,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242000042] [2024-06-14 12:47:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:01,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:02,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:02,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242000042] [2024-06-14 12:47:02,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242000042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:02,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:02,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:02,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557790306] [2024-06-14 12:47:02,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:02,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:02,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:02,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:02,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:02,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:02,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 189 transitions, 2023 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) [2024-06-14 12:47:02,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:02,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:02,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:03,459 INFO L124 PetriNetUnfolderBase]: 607/1043 cut-off events. [2024-06-14 12:47:03,459 INFO L125 PetriNetUnfolderBase]: For 96136/96136 co-relation queries the response was YES. [2024-06-14 12:47:03,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 1043 events. 607/1043 cut-off events. For 96136/96136 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4973 event pairs, 68 based on Foata normal form. 4/1046 useless extension candidates. Maximal degree in co-relation 8539. Up to 907 conditions per place. [2024-06-14 12:47:03,466 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 33 changer transitions 0/211 dead transitions. [2024-06-14 12:47:03,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 211 transitions, 2695 flow [2024-06-14 12:47:03,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 12:47:03,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:47:03,467 INFO L175 Difference]: Start difference. First operand has 206 places, 189 transitions, 2023 flow. Second operand 10 states and 125 transitions. [2024-06-14 12:47:03,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 211 transitions, 2695 flow [2024-06-14 12:47:03,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 211 transitions, 2595 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-14 12:47:03,612 INFO L231 Difference]: Finished difference. Result has 206 places, 192 transitions, 2056 flow [2024-06-14 12:47:03,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2056, PETRI_PLACES=206, PETRI_TRANSITIONS=192} [2024-06-14 12:47:03,613 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-14 12:47:03,613 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 192 transitions, 2056 flow [2024-06-14 12:47:03,613 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) [2024-06-14 12:47:03,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:03,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:03,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:47:03,614 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)] === [2024-06-14 12:47:03,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:03,614 INFO L85 PathProgramCache]: Analyzing trace with hash -483857224, now seen corresponding path program 8 times [2024-06-14 12:47:03,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:03,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490233927] [2024-06-14 12:47:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:03,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:04,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:04,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490233927] [2024-06-14 12:47:04,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490233927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:04,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:04,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:04,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839322506] [2024-06-14 12:47:04,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:04,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:04,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:04,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:04,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:04,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 192 transitions, 2056 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) [2024-06-14 12:47:04,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:04,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:04,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:05,392 INFO L124 PetriNetUnfolderBase]: 601/1035 cut-off events. [2024-06-14 12:47:05,392 INFO L125 PetriNetUnfolderBase]: For 92223/92223 co-relation queries the response was YES. [2024-06-14 12:47:05,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8401 conditions, 1035 events. 601/1035 cut-off events. For 92223/92223 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4941 event pairs, 64 based on Foata normal form. 4/1038 useless extension candidates. Maximal degree in co-relation 8301. Up to 806 conditions per place. [2024-06-14 12:47:05,401 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 164 selfloop transitions, 48 changer transitions 0/214 dead transitions. [2024-06-14 12:47:05,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 214 transitions, 2928 flow [2024-06-14 12:47:05,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:05,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:05,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 12:47:05,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-14 12:47:05,404 INFO L175 Difference]: Start difference. First operand has 206 places, 192 transitions, 2056 flow. Second operand 10 states and 135 transitions. [2024-06-14 12:47:05,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 214 transitions, 2928 flow [2024-06-14 12:47:05,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 214 transitions, 2795 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:05,568 INFO L231 Difference]: Finished difference. Result has 208 places, 192 transitions, 2026 flow [2024-06-14 12:47:05,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2026, PETRI_PLACES=208, PETRI_TRANSITIONS=192} [2024-06-14 12:47:05,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-14 12:47:05,569 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 192 transitions, 2026 flow [2024-06-14 12:47:05,569 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) [2024-06-14 12:47:05,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:05,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:05,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:47:05,570 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)] === [2024-06-14 12:47:05,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:05,570 INFO L85 PathProgramCache]: Analyzing trace with hash -477594604, now seen corresponding path program 9 times [2024-06-14 12:47:05,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:05,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375915257] [2024-06-14 12:47:05,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:05,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:06,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:06,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375915257] [2024-06-14 12:47:06,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375915257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:06,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:06,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:06,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808025632] [2024-06-14 12:47:06,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:06,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:06,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:06,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:06,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:06,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:06,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 192 transitions, 2026 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) [2024-06-14 12:47:06,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:06,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:06,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:07,241 INFO L124 PetriNetUnfolderBase]: 597/1029 cut-off events. [2024-06-14 12:47:07,241 INFO L125 PetriNetUnfolderBase]: For 88651/88651 co-relation queries the response was YES. [2024-06-14 12:47:07,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8211 conditions, 1029 events. 597/1029 cut-off events. For 88651/88651 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4909 event pairs, 62 based on Foata normal form. 2/1030 useless extension candidates. Maximal degree in co-relation 8110. Up to 930 conditions per place. [2024-06-14 12:47:07,250 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 180 selfloop transitions, 30 changer transitions 0/212 dead transitions. [2024-06-14 12:47:07,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 212 transitions, 2553 flow [2024-06-14 12:47:07,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:07,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:47:07,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:47:07,251 INFO L175 Difference]: Start difference. First operand has 208 places, 192 transitions, 2026 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:47:07,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 212 transitions, 2553 flow [2024-06-14 12:47:07,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 212 transitions, 2429 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:47:07,417 INFO L231 Difference]: Finished difference. Result has 210 places, 195 transitions, 2036 flow [2024-06-14 12:47:07,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2036, PETRI_PLACES=210, PETRI_TRANSITIONS=195} [2024-06-14 12:47:07,417 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-14 12:47:07,418 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 195 transitions, 2036 flow [2024-06-14 12:47:07,418 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) [2024-06-14 12:47:07,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:07,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:07,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:47:07,418 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)] === [2024-06-14 12:47:07,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:07,419 INFO L85 PathProgramCache]: Analyzing trace with hash -483857410, now seen corresponding path program 4 times [2024-06-14 12:47:07,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:07,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791691341] [2024-06-14 12:47:07,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:07,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:08,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:08,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791691341] [2024-06-14 12:47:08,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791691341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:08,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:08,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:08,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708608154] [2024-06-14 12:47:08,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:08,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:08,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:08,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:08,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:08,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:08,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 195 transitions, 2036 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) [2024-06-14 12:47:08,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:08,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:08,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:09,061 INFO L124 PetriNetUnfolderBase]: 593/1022 cut-off events. [2024-06-14 12:47:09,061 INFO L125 PetriNetUnfolderBase]: For 86229/86229 co-relation queries the response was YES. [2024-06-14 12:47:09,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8125 conditions, 1022 events. 593/1022 cut-off events. For 86229/86229 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4865 event pairs, 66 based on Foata normal form. 1/1022 useless extension candidates. Maximal degree in co-relation 8022. Up to 925 conditions per place. [2024-06-14 12:47:09,070 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 34 changer transitions 0/210 dead transitions. [2024-06-14 12:47:09,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 210 transitions, 2494 flow [2024-06-14 12:47:09,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:09,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:47:09,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:47:09,076 INFO L175 Difference]: Start difference. First operand has 210 places, 195 transitions, 2036 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:47:09,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 210 transitions, 2494 flow [2024-06-14 12:47:09,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 210 transitions, 2399 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:09,276 INFO L231 Difference]: Finished difference. Result has 213 places, 195 transitions, 2014 flow [2024-06-14 12:47:09,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2014, PETRI_PLACES=213, PETRI_TRANSITIONS=195} [2024-06-14 12:47:09,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-14 12:47:09,277 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 195 transitions, 2014 flow [2024-06-14 12:47:09,277 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) [2024-06-14 12:47:09,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:09,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:09,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:47:09,278 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)] === [2024-06-14 12:47:09,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:09,279 INFO L85 PathProgramCache]: Analyzing trace with hash 62783030, now seen corresponding path program 10 times [2024-06-14 12:47:09,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:09,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394998740] [2024-06-14 12:47:09,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:09,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:10,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:10,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394998740] [2024-06-14 12:47:10,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394998740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:10,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:10,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:10,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866707095] [2024-06-14 12:47:10,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:10,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:10,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:10,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:10,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:10,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:10,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 195 transitions, 2014 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) [2024-06-14 12:47:10,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:10,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:10,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:11,317 INFO L124 PetriNetUnfolderBase]: 609/1048 cut-off events. [2024-06-14 12:47:11,317 INFO L125 PetriNetUnfolderBase]: For 97007/97007 co-relation queries the response was YES. [2024-06-14 12:47:11,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8486 conditions, 1048 events. 609/1048 cut-off events. For 97007/97007 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5021 event pairs, 72 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 8382. Up to 967 conditions per place. [2024-06-14 12:47:11,326 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 191 selfloop transitions, 25 changer transitions 0/218 dead transitions. [2024-06-14 12:47:11,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 218 transitions, 2772 flow [2024-06-14 12:47:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:11,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:11,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 12:47:11,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-14 12:47:11,327 INFO L175 Difference]: Start difference. First operand has 213 places, 195 transitions, 2014 flow. Second operand 10 states and 119 transitions. [2024-06-14 12:47:11,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 218 transitions, 2772 flow [2024-06-14 12:47:11,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 218 transitions, 2691 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:47:11,505 INFO L231 Difference]: Finished difference. Result has 215 places, 202 transitions, 2154 flow [2024-06-14 12:47:11,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2154, PETRI_PLACES=215, PETRI_TRANSITIONS=202} [2024-06-14 12:47:11,505 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-14 12:47:11,506 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 202 transitions, 2154 flow [2024-06-14 12:47:11,506 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) [2024-06-14 12:47:11,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:11,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:11,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:47:11,506 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)] === [2024-06-14 12:47:11,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:11,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1194358378, now seen corresponding path program 2 times [2024-06-14 12:47:11,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:11,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100002526] [2024-06-14 12:47:11,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:11,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:12,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:12,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100002526] [2024-06-14 12:47:12,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100002526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:12,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:12,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:12,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672643737] [2024-06-14 12:47:12,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:12,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:12,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:12,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:12,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:12,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:12,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 202 transitions, 2154 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) [2024-06-14 12:47:12,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:12,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:12,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:13,125 INFO L124 PetriNetUnfolderBase]: 613/1056 cut-off events. [2024-06-14 12:47:13,126 INFO L125 PetriNetUnfolderBase]: For 99904/99904 co-relation queries the response was YES. [2024-06-14 12:47:13,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8605 conditions, 1056 events. 613/1056 cut-off events. For 99904/99904 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5087 event pairs, 84 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 8499. Up to 1014 conditions per place. [2024-06-14 12:47:13,133 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 197 selfloop transitions, 17 changer transitions 0/216 dead transitions. [2024-06-14 12:47:13,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 216 transitions, 2647 flow [2024-06-14 12:47:13,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:13,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:13,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 12:47:13,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 12:47:13,135 INFO L175 Difference]: Start difference. First operand has 215 places, 202 transitions, 2154 flow. Second operand 9 states and 102 transitions. [2024-06-14 12:47:13,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 216 transitions, 2647 flow [2024-06-14 12:47:13,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 216 transitions, 2535 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-14 12:47:13,310 INFO L231 Difference]: Finished difference. Result has 220 places, 205 transitions, 2124 flow [2024-06-14 12:47:13,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2124, PETRI_PLACES=220, PETRI_TRANSITIONS=205} [2024-06-14 12:47:13,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-14 12:47:13,311 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 205 transitions, 2124 flow [2024-06-14 12:47:13,311 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) [2024-06-14 12:47:13,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:13,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:13,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:47:13,311 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)] === [2024-06-14 12:47:13,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1251148262, now seen corresponding path program 11 times [2024-06-14 12:47:13,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:13,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823102846] [2024-06-14 12:47:13,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:13,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:14,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:14,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:14,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823102846] [2024-06-14 12:47:14,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823102846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:14,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:14,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:14,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561976460] [2024-06-14 12:47:14,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:14,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:14,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:14,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:14,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:14,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:14,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 205 transitions, 2124 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) [2024-06-14 12:47:14,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:14,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:14,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:15,163 INFO L124 PetriNetUnfolderBase]: 629/1082 cut-off events. [2024-06-14 12:47:15,163 INFO L125 PetriNetUnfolderBase]: For 107605/107605 co-relation queries the response was YES. [2024-06-14 12:47:15,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8892 conditions, 1082 events. 629/1082 cut-off events. For 107605/107605 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5229 event pairs, 69 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 8783. Up to 920 conditions per place. [2024-06-14 12:47:15,171 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 186 selfloop transitions, 41 changer transitions 0/229 dead transitions. [2024-06-14 12:47:15,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 229 transitions, 3091 flow [2024-06-14 12:47:15,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:15,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:15,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:47:15,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:47:15,172 INFO L175 Difference]: Start difference. First operand has 220 places, 205 transitions, 2124 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:47:15,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 229 transitions, 3091 flow [2024-06-14 12:47:15,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 3045 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:15,368 INFO L231 Difference]: Finished difference. Result has 225 places, 214 transitions, 2392 flow [2024-06-14 12:47:15,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2392, PETRI_PLACES=225, PETRI_TRANSITIONS=214} [2024-06-14 12:47:15,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-14 12:47:15,369 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 214 transitions, 2392 flow [2024-06-14 12:47:15,369 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) [2024-06-14 12:47:15,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:15,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:15,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:47:15,369 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)] === [2024-06-14 12:47:15,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:15,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1251141752, now seen corresponding path program 12 times [2024-06-14 12:47:15,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:15,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482559328] [2024-06-14 12:47:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:15,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:16,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:16,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482559328] [2024-06-14 12:47:16,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482559328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:16,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:16,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:16,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931278495] [2024-06-14 12:47:16,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:16,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:16,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:16,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:16,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:16,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:16,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 214 transitions, 2392 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) [2024-06-14 12:47:16,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:16,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:16,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:16,980 INFO L124 PetriNetUnfolderBase]: 661/1134 cut-off events. [2024-06-14 12:47:16,980 INFO L125 PetriNetUnfolderBase]: For 124938/124938 co-relation queries the response was YES. [2024-06-14 12:47:16,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9707 conditions, 1134 events. 661/1134 cut-off events. For 124938/124938 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5537 event pairs, 73 based on Foata normal form. 4/1137 useless extension candidates. Maximal degree in co-relation 9596. Up to 867 conditions per place. [2024-06-14 12:47:16,995 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 50 changer transitions 0/240 dead transitions. [2024-06-14 12:47:16,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 240 transitions, 3531 flow [2024-06-14 12:47:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:47:16,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 12:47:16,997 INFO L175 Difference]: Start difference. First operand has 225 places, 214 transitions, 2392 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:47:16,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 240 transitions, 3531 flow [2024-06-14 12:47:17,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 240 transitions, 3333 flow, removed 90 selfloop flow, removed 4 redundant places. [2024-06-14 12:47:17,231 INFO L231 Difference]: Finished difference. Result has 231 places, 222 transitions, 2520 flow [2024-06-14 12:47:17,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2520, PETRI_PLACES=231, PETRI_TRANSITIONS=222} [2024-06-14 12:47:17,231 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-14 12:47:17,231 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 222 transitions, 2520 flow [2024-06-14 12:47:17,231 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) [2024-06-14 12:47:17,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:17,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:17,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:47:17,232 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)] === [2024-06-14 12:47:17,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1194604456, now seen corresponding path program 13 times [2024-06-14 12:47:17,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:17,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679531388] [2024-06-14 12:47:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:17,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:18,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:18,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679531388] [2024-06-14 12:47:18,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679531388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:18,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:18,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:18,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105735426] [2024-06-14 12:47:18,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:18,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:18,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:18,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:18,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:18,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:18,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 222 transitions, 2520 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) [2024-06-14 12:47:18,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:18,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:18,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:18,854 INFO L124 PetriNetUnfolderBase]: 673/1154 cut-off events. [2024-06-14 12:47:18,854 INFO L125 PetriNetUnfolderBase]: For 127419/127419 co-relation queries the response was YES. [2024-06-14 12:47:18,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9778 conditions, 1154 events. 673/1154 cut-off events. For 127419/127419 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5659 event pairs, 80 based on Foata normal form. 4/1157 useless extension candidates. Maximal degree in co-relation 9665. Up to 1044 conditions per place. [2024-06-14 12:47:18,865 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 31 changer transitions 0/241 dead transitions. [2024-06-14 12:47:18,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 241 transitions, 3262 flow [2024-06-14 12:47:18,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:18,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:47:18,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:47:18,866 INFO L175 Difference]: Start difference. First operand has 231 places, 222 transitions, 2520 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:47:18,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 241 transitions, 3262 flow [2024-06-14 12:47:19,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 241 transitions, 2959 flow, removed 66 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:19,121 INFO L231 Difference]: Finished difference. Result has 233 places, 226 transitions, 2379 flow [2024-06-14 12:47:19,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2379, PETRI_PLACES=233, PETRI_TRANSITIONS=226} [2024-06-14 12:47:19,121 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-14 12:47:19,122 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 226 transitions, 2379 flow [2024-06-14 12:47:19,122 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) [2024-06-14 12:47:19,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:19,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:19,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:47:19,122 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)] === [2024-06-14 12:47:19,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:19,123 INFO L85 PathProgramCache]: Analyzing trace with hash 738285334, now seen corresponding path program 6 times [2024-06-14 12:47:19,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:19,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071453121] [2024-06-14 12:47:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:19,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:20,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:20,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071453121] [2024-06-14 12:47:20,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071453121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:20,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:20,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:20,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009008126] [2024-06-14 12:47:20,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:20,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:20,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:20,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:20,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:20,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:20,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 226 transitions, 2379 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) [2024-06-14 12:47:20,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:20,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:20,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:20,622 INFO L124 PetriNetUnfolderBase]: 670/1149 cut-off events. [2024-06-14 12:47:20,623 INFO L125 PetriNetUnfolderBase]: For 119801/119801 co-relation queries the response was YES. [2024-06-14 12:47:20,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9251 conditions, 1149 events. 670/1149 cut-off events. For 119801/119801 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5635 event pairs, 92 based on Foata normal form. 2/1150 useless extension candidates. Maximal degree in co-relation 9139. Up to 1119 conditions per place. [2024-06-14 12:47:20,631 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 218 selfloop transitions, 15 changer transitions 0/235 dead transitions. [2024-06-14 12:47:20,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 235 transitions, 2865 flow [2024-06-14 12:47:20,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:20,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:20,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:47:20,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-14 12:47:20,632 INFO L175 Difference]: Start difference. First operand has 233 places, 226 transitions, 2379 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:47:20,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 235 transitions, 2865 flow [2024-06-14 12:47:20,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 235 transitions, 2809 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:20,914 INFO L231 Difference]: Finished difference. Result has 236 places, 226 transitions, 2357 flow [2024-06-14 12:47:20,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2357, PETRI_PLACES=236, PETRI_TRANSITIONS=226} [2024-06-14 12:47:20,915 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-14 12:47:20,915 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 226 transitions, 2357 flow [2024-06-14 12:47:20,915 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) [2024-06-14 12:47:20,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:20,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:20,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:47:20,915 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)] === [2024-06-14 12:47:20,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:20,915 INFO L85 PathProgramCache]: Analyzing trace with hash 738290294, now seen corresponding path program 14 times [2024-06-14 12:47:20,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:20,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761384031] [2024-06-14 12:47:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:20,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:22,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:22,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761384031] [2024-06-14 12:47:22,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761384031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:22,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:22,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:22,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110297272] [2024-06-14 12:47:22,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:22,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:22,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:22,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:22,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:22,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:22,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 226 transitions, 2357 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) [2024-06-14 12:47:22,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:22,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:22,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:22,694 INFO L124 PetriNetUnfolderBase]: 672/1153 cut-off events. [2024-06-14 12:47:22,695 INFO L125 PetriNetUnfolderBase]: For 121791/121791 co-relation queries the response was YES. [2024-06-14 12:47:22,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9153 conditions, 1153 events. 672/1153 cut-off events. For 121791/121791 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5653 event pairs, 69 based on Foata normal form. 4/1156 useless extension candidates. Maximal degree in co-relation 9039. Up to 881 conditions per place. [2024-06-14 12:47:22,705 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 60 changer transitions 0/245 dead transitions. [2024-06-14 12:47:22,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 245 transitions, 3198 flow [2024-06-14 12:47:22,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:22,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:47:22,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:47:22,707 INFO L175 Difference]: Start difference. First operand has 236 places, 226 transitions, 2357 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:47:22,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 245 transitions, 3198 flow [2024-06-14 12:47:23,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 245 transitions, 3091 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 12:47:23,042 INFO L231 Difference]: Finished difference. Result has 237 places, 228 transitions, 2408 flow [2024-06-14 12:47:23,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2408, PETRI_PLACES=237, PETRI_TRANSITIONS=228} [2024-06-14 12:47:23,043 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-14 12:47:23,043 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 228 transitions, 2408 flow [2024-06-14 12:47:23,043 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) [2024-06-14 12:47:23,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:23,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:23,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:47:23,044 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)] === [2024-06-14 12:47:23,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:23,044 INFO L85 PathProgramCache]: Analyzing trace with hash 904297444, now seen corresponding path program 3 times [2024-06-14 12:47:23,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:23,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052439393] [2024-06-14 12:47:23,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:23,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:24,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:24,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052439393] [2024-06-14 12:47:24,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052439393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:24,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:24,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:24,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499463174] [2024-06-14 12:47:24,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:24,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:24,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:24,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:24,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:24,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:24,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 228 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) [2024-06-14 12:47:24,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:24,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:24,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:24,632 INFO L124 PetriNetUnfolderBase]: 676/1161 cut-off events. [2024-06-14 12:47:24,632 INFO L125 PetriNetUnfolderBase]: For 121536/121536 co-relation queries the response was YES. [2024-06-14 12:47:24,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9293 conditions, 1161 events. 676/1161 cut-off events. For 121536/121536 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5728 event pairs, 93 based on Foata normal form. 2/1162 useless extension candidates. Maximal degree in co-relation 9179. Up to 1126 conditions per place. [2024-06-14 12:47:24,643 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 223 selfloop transitions, 14 changer transitions 0/239 dead transitions. [2024-06-14 12:47:24,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 239 transitions, 2920 flow [2024-06-14 12:47:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:24,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:47:24,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 12:47:24,644 INFO L175 Difference]: Start difference. First operand has 237 places, 228 transitions, 2408 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:47:24,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 239 transitions, 2920 flow [2024-06-14 12:47:24,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 239 transitions, 2770 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 12:47:24,967 INFO L231 Difference]: Finished difference. Result has 237 places, 229 transitions, 2308 flow [2024-06-14 12:47:24,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2308, PETRI_PLACES=237, PETRI_TRANSITIONS=229} [2024-06-14 12:47:24,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-14 12:47:24,968 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 229 transitions, 2308 flow [2024-06-14 12:47:24,968 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) [2024-06-14 12:47:24,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:24,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:24,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:47:24,968 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)] === [2024-06-14 12:47:24,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:24,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1996650250, now seen corresponding path program 4 times [2024-06-14 12:47:24,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:24,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303694125] [2024-06-14 12:47:24,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:24,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:26,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:26,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303694125] [2024-06-14 12:47:26,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303694125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:26,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:26,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:26,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995031832] [2024-06-14 12:47:26,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:26,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:26,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:26,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:26,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:26,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:26,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 229 transitions, 2308 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) [2024-06-14 12:47:26,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:26,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:26,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:26,586 INFO L124 PetriNetUnfolderBase]: 680/1169 cut-off events. [2024-06-14 12:47:26,586 INFO L125 PetriNetUnfolderBase]: For 124635/124635 co-relation queries the response was YES. [2024-06-14 12:47:26,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9156 conditions, 1169 events. 680/1169 cut-off events. For 124635/124635 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5769 event pairs, 93 based on Foata normal form. 2/1170 useless extension candidates. Maximal degree in co-relation 9043. Up to 1139 conditions per place. [2024-06-14 12:47:26,595 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 225 selfloop transitions, 14 changer transitions 0/241 dead transitions. [2024-06-14 12:47:26,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 241 transitions, 2842 flow [2024-06-14 12:47:26,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:26,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:47:26,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-14 12:47:26,596 INFO L175 Difference]: Start difference. First operand has 237 places, 229 transitions, 2308 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:47:26,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 241 transitions, 2842 flow [2024-06-14 12:47:26,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 241 transitions, 2804 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:26,896 INFO L231 Difference]: Finished difference. Result has 239 places, 231 transitions, 2336 flow [2024-06-14 12:47:26,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2336, PETRI_PLACES=239, PETRI_TRANSITIONS=231} [2024-06-14 12:47:26,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-14 12:47:26,897 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 231 transitions, 2336 flow [2024-06-14 12:47:26,897 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) [2024-06-14 12:47:26,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:26,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:26,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:47:26,897 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)] === [2024-06-14 12:47:26,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:26,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1996896328, now seen corresponding path program 15 times [2024-06-14 12:47:26,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:26,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389992513] [2024-06-14 12:47:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:26,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:28,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:28,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389992513] [2024-06-14 12:47:28,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389992513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:28,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:28,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:28,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195639314] [2024-06-14 12:47:28,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:28,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:28,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:28,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:28,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:28,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:28,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 231 transitions, 2336 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) [2024-06-14 12:47:28,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:28,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:28,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:28,672 INFO L124 PetriNetUnfolderBase]: 694/1193 cut-off events. [2024-06-14 12:47:28,672 INFO L125 PetriNetUnfolderBase]: For 134111/134111 co-relation queries the response was YES. [2024-06-14 12:47:28,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9365 conditions, 1193 events. 694/1193 cut-off events. For 134111/134111 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5933 event pairs, 83 based on Foata normal form. 4/1196 useless extension candidates. Maximal degree in co-relation 9251. Up to 1084 conditions per place. [2024-06-14 12:47:28,683 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 219 selfloop transitions, 28 changer transitions 0/249 dead transitions. [2024-06-14 12:47:28,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 249 transitions, 3089 flow [2024-06-14 12:47:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 12:47:28,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 12:47:28,684 INFO L175 Difference]: Start difference. First operand has 239 places, 231 transitions, 2336 flow. Second operand 10 states and 116 transitions. [2024-06-14 12:47:28,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 249 transitions, 3089 flow [2024-06-14 12:47:29,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 249 transitions, 3023 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 12:47:29,009 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 2413 flow [2024-06-14 12:47:29,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2413, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2024-06-14 12:47:29,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-14 12:47:29,010 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 2413 flow [2024-06-14 12:47:29,010 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) [2024-06-14 12:47:29,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:29,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:29,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:47:29,010 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)] === [2024-06-14 12:47:29,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:29,011 INFO L85 PathProgramCache]: Analyzing trace with hash 618978894, now seen corresponding path program 5 times [2024-06-14 12:47:29,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:29,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045499105] [2024-06-14 12:47:29,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:29,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:29,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:29,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045499105] [2024-06-14 12:47:29,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045499105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:29,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:29,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:29,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968828753] [2024-06-14 12:47:29,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:29,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:29,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:29,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:29,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:30,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:30,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 2413 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) [2024-06-14 12:47:30,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:30,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:30,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:30,450 INFO L124 PetriNetUnfolderBase]: 686/1180 cut-off events. [2024-06-14 12:47:30,450 INFO L125 PetriNetUnfolderBase]: For 126457/126457 co-relation queries the response was YES. [2024-06-14 12:47:30,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9129 conditions, 1180 events. 686/1180 cut-off events. For 126457/126457 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5851 event pairs, 88 based on Foata normal form. 3/1182 useless extension candidates. Maximal degree in co-relation 9016. Up to 1123 conditions per place. [2024-06-14 12:47:30,461 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 20 changer transitions 0/246 dead transitions. [2024-06-14 12:47:30,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 246 transitions, 2931 flow [2024-06-14 12:47:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:30,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 12:47:30,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 12:47:30,462 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 2413 flow. Second operand 9 states and 104 transitions. [2024-06-14 12:47:30,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 246 transitions, 2931 flow [2024-06-14 12:47:30,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 246 transitions, 2712 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-14 12:47:30,764 INFO L231 Difference]: Finished difference. Result has 238 places, 235 transitions, 2242 flow [2024-06-14 12:47:30,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2242, PETRI_PLACES=238, PETRI_TRANSITIONS=235} [2024-06-14 12:47:30,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-14 12:47:30,764 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 235 transitions, 2242 flow [2024-06-14 12:47:30,765 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) [2024-06-14 12:47:30,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:30,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:30,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:47:30,765 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)] === [2024-06-14 12:47:30,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:30,765 INFO L85 PathProgramCache]: Analyzing trace with hash 618985590, now seen corresponding path program 16 times [2024-06-14 12:47:30,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:30,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842789486] [2024-06-14 12:47:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:30,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:31,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:31,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842789486] [2024-06-14 12:47:31,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842789486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:31,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:31,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943224517] [2024-06-14 12:47:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:31,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:31,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:31,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:32,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:32,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 235 transitions, 2242 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) [2024-06-14 12:47:32,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:32,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:32,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:32,600 INFO L124 PetriNetUnfolderBase]: 682/1174 cut-off events. [2024-06-14 12:47:32,600 INFO L125 PetriNetUnfolderBase]: For 121688/121688 co-relation queries the response was YES. [2024-06-14 12:47:32,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8723 conditions, 1174 events. 682/1174 cut-off events. For 121688/121688 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5821 event pairs, 82 based on Foata normal form. 2/1175 useless extension candidates. Maximal degree in co-relation 8611. Up to 1076 conditions per place. [2024-06-14 12:47:32,611 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 29 changer transitions 0/249 dead transitions. [2024-06-14 12:47:32,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 249 transitions, 2922 flow [2024-06-14 12:47:32,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 12:47:32,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-14 12:47:32,612 INFO L175 Difference]: Start difference. First operand has 238 places, 235 transitions, 2242 flow. Second operand 10 states and 117 transitions. [2024-06-14 12:47:32,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 249 transitions, 2922 flow [2024-06-14 12:47:32,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 249 transitions, 2783 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-14 12:47:32,933 INFO L231 Difference]: Finished difference. Result has 239 places, 235 transitions, 2168 flow [2024-06-14 12:47:32,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2105, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2168, PETRI_PLACES=239, PETRI_TRANSITIONS=235} [2024-06-14 12:47:32,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-14 12:47:32,933 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 235 transitions, 2168 flow [2024-06-14 12:47:32,933 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) [2024-06-14 12:47:32,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:32,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:32,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:47:32,934 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)] === [2024-06-14 12:47:32,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:32,934 INFO L85 PathProgramCache]: Analyzing trace with hash 914444358, now seen corresponding path program 5 times [2024-06-14 12:47:32,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:32,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715468279] [2024-06-14 12:47:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:32,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:33,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:33,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715468279] [2024-06-14 12:47:33,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715468279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:33,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:33,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:33,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050644401] [2024-06-14 12:47:33,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:33,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:33,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:33,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:33,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:34,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:34,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 235 transitions, 2168 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) [2024-06-14 12:47:34,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:34,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:34,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:34,468 INFO L124 PetriNetUnfolderBase]: 679/1169 cut-off events. [2024-06-14 12:47:34,468 INFO L125 PetriNetUnfolderBase]: For 115577/115577 co-relation queries the response was YES. [2024-06-14 12:47:34,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8459 conditions, 1169 events. 679/1169 cut-off events. For 115577/115577 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5789 event pairs, 92 based on Foata normal form. 2/1170 useless extension candidates. Maximal degree in co-relation 8346. Up to 1131 conditions per place. [2024-06-14 12:47:34,478 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 226 selfloop transitions, 17 changer transitions 0/245 dead transitions. [2024-06-14 12:47:34,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 245 transitions, 2678 flow [2024-06-14 12:47:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:34,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 12:47:34,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:47:34,479 INFO L175 Difference]: Start difference. First operand has 239 places, 235 transitions, 2168 flow. Second operand 9 states and 99 transitions. [2024-06-14 12:47:34,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 245 transitions, 2678 flow [2024-06-14 12:47:34,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 245 transitions, 2605 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:34,795 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 2134 flow [2024-06-14 12:47:34,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2134, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2024-06-14 12:47:34,796 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-14 12:47:34,796 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 2134 flow [2024-06-14 12:47:34,796 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) [2024-06-14 12:47:34,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:34,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:34,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:47:34,796 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)] === [2024-06-14 12:47:34,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:34,797 INFO L85 PathProgramCache]: Analyzing trace with hash 904316100, now seen corresponding path program 17 times [2024-06-14 12:47:34,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:34,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247117320] [2024-06-14 12:47:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:34,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:36,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:36,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247117320] [2024-06-14 12:47:36,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247117320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:36,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:36,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:36,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114571846] [2024-06-14 12:47:36,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:36,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:36,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:36,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:36,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:36,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 2134 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) [2024-06-14 12:47:36,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:36,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:36,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:36,543 INFO L124 PetriNetUnfolderBase]: 675/1163 cut-off events. [2024-06-14 12:47:36,543 INFO L125 PetriNetUnfolderBase]: For 113860/113860 co-relation queries the response was YES. [2024-06-14 12:47:36,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8217 conditions, 1163 events. 675/1163 cut-off events. For 113860/113860 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5777 event pairs, 91 based on Foata normal form. 2/1164 useless extension candidates. Maximal degree in co-relation 8104. Up to 1115 conditions per place. [2024-06-14 12:47:36,554 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 227 selfloop transitions, 20 changer transitions 0/249 dead transitions. [2024-06-14 12:47:36,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 249 transitions, 2708 flow [2024-06-14 12:47:36,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:36,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:36,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 12:47:36,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:47:36,555 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 2134 flow. Second operand 10 states and 110 transitions. [2024-06-14 12:47:36,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 249 transitions, 2708 flow [2024-06-14 12:47:36,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 249 transitions, 2640 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:36,862 INFO L231 Difference]: Finished difference. Result has 242 places, 237 transitions, 2163 flow [2024-06-14 12:47:36,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2163, PETRI_PLACES=242, PETRI_TRANSITIONS=237} [2024-06-14 12:47:36,862 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-14 12:47:36,863 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 237 transitions, 2163 flow [2024-06-14 12:47:36,863 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) [2024-06-14 12:47:36,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:36,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:36,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:47:36,863 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)] === [2024-06-14 12:47:36,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash -660887753, now seen corresponding path program 1 times [2024-06-14 12:47:36,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:36,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160412526] [2024-06-14 12:47:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:36,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:38,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:38,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:38,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160412526] [2024-06-14 12:47:38,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160412526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:38,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:38,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:38,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809297493] [2024-06-14 12:47:38,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:38,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:38,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:38,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:38,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:38,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:38,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 237 transitions, 2163 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) [2024-06-14 12:47:38,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:38,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:38,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:39,140 INFO L124 PetriNetUnfolderBase]: 686/1184 cut-off events. [2024-06-14 12:47:39,141 INFO L125 PetriNetUnfolderBase]: For 121720/121720 co-relation queries the response was YES. [2024-06-14 12:47:39,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8482 conditions, 1184 events. 686/1184 cut-off events. For 121720/121720 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5904 event pairs, 82 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 8368. Up to 1054 conditions per place. [2024-06-14 12:47:39,150 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 25 changer transitions 0/266 dead transitions. [2024-06-14 12:47:39,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 266 transitions, 2935 flow [2024-06-14 12:47:39,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:47:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:47:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 12:47:39,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 12:47:39,152 INFO L175 Difference]: Start difference. First operand has 242 places, 237 transitions, 2163 flow. Second operand 12 states and 141 transitions. [2024-06-14 12:47:39,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 266 transitions, 2935 flow [2024-06-14 12:47:39,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 266 transitions, 2838 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 12:47:39,473 INFO L231 Difference]: Finished difference. Result has 245 places, 239 transitions, 2142 flow [2024-06-14 12:47:39,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2142, PETRI_PLACES=245, PETRI_TRANSITIONS=239} [2024-06-14 12:47:39,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-14 12:47:39,474 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 239 transitions, 2142 flow [2024-06-14 12:47:39,474 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) [2024-06-14 12:47:39,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:39,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:39,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:47:39,475 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)] === [2024-06-14 12:47:39,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:39,475 INFO L85 PathProgramCache]: Analyzing trace with hash 64925819, now seen corresponding path program 2 times [2024-06-14 12:47:39,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:39,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236472138] [2024-06-14 12:47:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:39,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:40,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:40,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236472138] [2024-06-14 12:47:40,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236472138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:40,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:40,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:40,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986235626] [2024-06-14 12:47:40,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:40,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:40,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:40,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:40,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:41,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:41,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 239 transitions, 2142 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) [2024-06-14 12:47:41,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:41,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:41,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:41,572 INFO L124 PetriNetUnfolderBase]: 697/1205 cut-off events. [2024-06-14 12:47:41,572 INFO L125 PetriNetUnfolderBase]: For 131672/131672 co-relation queries the response was YES. [2024-06-14 12:47:41,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8690 conditions, 1205 events. 697/1205 cut-off events. For 131672/131672 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6048 event pairs, 90 based on Foata normal form. 2/1206 useless extension candidates. Maximal degree in co-relation 8576. Up to 1117 conditions per place. [2024-06-14 12:47:41,582 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 240 selfloop transitions, 25 changer transitions 0/267 dead transitions. [2024-06-14 12:47:41,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 267 transitions, 2920 flow [2024-06-14 12:47:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:47:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:47:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-14 12:47:41,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-14 12:47:41,584 INFO L175 Difference]: Start difference. First operand has 245 places, 239 transitions, 2142 flow. Second operand 12 states and 142 transitions. [2024-06-14 12:47:41,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 267 transitions, 2920 flow [2024-06-14 12:47:41,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 267 transitions, 2868 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:41,928 INFO L231 Difference]: Finished difference. Result has 249 places, 241 transitions, 2170 flow [2024-06-14 12:47:41,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2170, PETRI_PLACES=249, PETRI_TRANSITIONS=241} [2024-06-14 12:47:41,928 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-14 12:47:41,928 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 241 transitions, 2170 flow [2024-06-14 12:47:41,928 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) [2024-06-14 12:47:41,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:41,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:41,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:47:41,929 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)] === [2024-06-14 12:47:41,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:41,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1683747825, now seen corresponding path program 3 times [2024-06-14 12:47:41,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:41,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101167300] [2024-06-14 12:47:41,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:41,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:43,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:43,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101167300] [2024-06-14 12:47:43,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101167300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:43,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:43,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:43,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144382243] [2024-06-14 12:47:43,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:43,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:43,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:43,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:43,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:43,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:43,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 241 transitions, 2170 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) [2024-06-14 12:47:43,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:43,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:43,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:44,322 INFO L124 PetriNetUnfolderBase]: 694/1200 cut-off events. [2024-06-14 12:47:44,322 INFO L125 PetriNetUnfolderBase]: For 129260/129260 co-relation queries the response was YES. [2024-06-14 12:47:44,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8559 conditions, 1200 events. 694/1200 cut-off events. For 129260/129260 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6027 event pairs, 91 based on Foata normal form. 2/1201 useless extension candidates. Maximal degree in co-relation 8443. Up to 1129 conditions per place. [2024-06-14 12:47:44,333 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 240 selfloop transitions, 24 changer transitions 0/266 dead transitions. [2024-06-14 12:47:44,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 266 transitions, 2766 flow [2024-06-14 12:47:44,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:47:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:47:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-14 12:47:44,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35336538461538464 [2024-06-14 12:47:44,334 INFO L175 Difference]: Start difference. First operand has 249 places, 241 transitions, 2170 flow. Second operand 13 states and 147 transitions. [2024-06-14 12:47:44,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 266 transitions, 2766 flow [2024-06-14 12:47:44,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 266 transitions, 2726 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:44,692 INFO L231 Difference]: Finished difference. Result has 254 places, 241 transitions, 2182 flow [2024-06-14 12:47:44,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2182, PETRI_PLACES=254, PETRI_TRANSITIONS=241} [2024-06-14 12:47:44,692 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 12:47:44,692 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 241 transitions, 2182 flow [2024-06-14 12:47:44,692 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) [2024-06-14 12:47:44,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:44,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:44,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:47:44,693 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)] === [2024-06-14 12:47:44,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:44,693 INFO L85 PathProgramCache]: Analyzing trace with hash 2056023077, now seen corresponding path program 4 times [2024-06-14 12:47:44,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:44,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407950698] [2024-06-14 12:47:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:44,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:46,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:46,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407950698] [2024-06-14 12:47:46,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407950698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:46,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:46,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:46,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669163304] [2024-06-14 12:47:46,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:46,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:46,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:46,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:46,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:46,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:46,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 241 transitions, 2182 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) [2024-06-14 12:47:46,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:46,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:46,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:46,633 INFO L124 PetriNetUnfolderBase]: 698/1208 cut-off events. [2024-06-14 12:47:46,633 INFO L125 PetriNetUnfolderBase]: For 132455/132455 co-relation queries the response was YES. [2024-06-14 12:47:46,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8652 conditions, 1208 events. 698/1208 cut-off events. For 132455/132455 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6087 event pairs, 93 based on Foata normal form. 2/1209 useless extension candidates. Maximal degree in co-relation 8534. Up to 1131 conditions per place. [2024-06-14 12:47:46,644 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 235 selfloop transitions, 24 changer transitions 0/261 dead transitions. [2024-06-14 12:47:46,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 261 transitions, 2762 flow [2024-06-14 12:47:46,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:46,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:46,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:47:46,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 12:47:46,646 INFO L175 Difference]: Start difference. First operand has 254 places, 241 transitions, 2182 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:47:46,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 261 transitions, 2762 flow [2024-06-14 12:47:47,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 261 transitions, 2709 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-14 12:47:47,023 INFO L231 Difference]: Finished difference. Result has 252 places, 242 transitions, 2195 flow [2024-06-14 12:47:47,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2195, PETRI_PLACES=252, PETRI_TRANSITIONS=242} [2024-06-14 12:47:47,023 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-14 12:47:47,023 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 242 transitions, 2195 flow [2024-06-14 12:47:47,023 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) [2024-06-14 12:47:47,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:47,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:47,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:47:47,024 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)] === [2024-06-14 12:47:47,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:47,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2056028812, now seen corresponding path program 1 times [2024-06-14 12:47:47,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:47,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826482121] [2024-06-14 12:47:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:47,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:48,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:48,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826482121] [2024-06-14 12:47:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826482121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:48,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:48,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:48,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811006139] [2024-06-14 12:47:48,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:48,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:48,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:49,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:49,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 242 transitions, 2195 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) [2024-06-14 12:47:49,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:49,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:49,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:49,731 INFO L124 PetriNetUnfolderBase]: 694/1202 cut-off events. [2024-06-14 12:47:49,731 INFO L125 PetriNetUnfolderBase]: For 129369/129369 co-relation queries the response was YES. [2024-06-14 12:47:49,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8514 conditions, 1202 events. 694/1202 cut-off events. For 129369/129369 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6061 event pairs, 90 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 8395. Up to 1115 conditions per place. [2024-06-14 12:47:49,742 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 27 changer transitions 0/263 dead transitions. [2024-06-14 12:47:49,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 263 transitions, 2777 flow [2024-06-14 12:47:49,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:49,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:47:49,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-14 12:47:49,743 INFO L175 Difference]: Start difference. First operand has 252 places, 242 transitions, 2195 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:47:49,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 263 transitions, 2777 flow [2024-06-14 12:47:50,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 263 transitions, 2715 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:47:50,134 INFO L231 Difference]: Finished difference. Result has 254 places, 242 transitions, 2192 flow [2024-06-14 12:47:50,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2192, PETRI_PLACES=254, PETRI_TRANSITIONS=242} [2024-06-14 12:47:50,135 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 12:47:50,135 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 242 transitions, 2192 flow [2024-06-14 12:47:50,135 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) [2024-06-14 12:47:50,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:50,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:50,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:47:50,135 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)] === [2024-06-14 12:47:50,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:50,136 INFO L85 PathProgramCache]: Analyzing trace with hash 2055875207, now seen corresponding path program 5 times [2024-06-14 12:47:50,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:50,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818295386] [2024-06-14 12:47:50,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:50,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:51,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:51,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818295386] [2024-06-14 12:47:51,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818295386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:51,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:51,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:51,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866895680] [2024-06-14 12:47:51,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:51,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:51,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:51,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:51,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:51,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:51,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 242 transitions, 2192 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) [2024-06-14 12:47:51,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:51,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:51,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:52,270 INFO L124 PetriNetUnfolderBase]: 691/1197 cut-off events. [2024-06-14 12:47:52,270 INFO L125 PetriNetUnfolderBase]: For 123061/123061 co-relation queries the response was YES. [2024-06-14 12:47:52,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8328 conditions, 1197 events. 691/1197 cut-off events. For 123061/123061 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6028 event pairs, 89 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 8209. Up to 1127 conditions per place. [2024-06-14 12:47:52,282 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 241 selfloop transitions, 20 changer transitions 0/263 dead transitions. [2024-06-14 12:47:52,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 263 transitions, 2770 flow [2024-06-14 12:47:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:52,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:47:52,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:47:52,283 INFO L175 Difference]: Start difference. First operand has 254 places, 242 transitions, 2192 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:47:52,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 263 transitions, 2770 flow [2024-06-14 12:47:52,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 263 transitions, 2702 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:47:52,664 INFO L231 Difference]: Finished difference. Result has 255 places, 242 transitions, 2168 flow [2024-06-14 12:47:52,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2168, PETRI_PLACES=255, PETRI_TRANSITIONS=242} [2024-06-14 12:47:52,664 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-14 12:47:52,664 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 242 transitions, 2168 flow [2024-06-14 12:47:52,664 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) [2024-06-14 12:47:52,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:52,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:52,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:47:52,665 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)] === [2024-06-14 12:47:52,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:52,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1335082051, now seen corresponding path program 6 times [2024-06-14 12:47:52,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:52,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016822332] [2024-06-14 12:47:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:52,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:54,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:54,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016822332] [2024-06-14 12:47:54,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016822332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:54,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:54,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:54,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244274373] [2024-06-14 12:47:54,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:54,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:54,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:54,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:54,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:54,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:54,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 242 transitions, 2168 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) [2024-06-14 12:47:54,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:54,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:54,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:54,949 INFO L124 PetriNetUnfolderBase]: 698/1210 cut-off events. [2024-06-14 12:47:54,949 INFO L125 PetriNetUnfolderBase]: For 126077/126077 co-relation queries the response was YES. [2024-06-14 12:47:54,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8393 conditions, 1210 events. 698/1210 cut-off events. For 126077/126077 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6128 event pairs, 77 based on Foata normal form. 2/1211 useless extension candidates. Maximal degree in co-relation 8273. Up to 1009 conditions per place. [2024-06-14 12:47:54,960 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 203 selfloop transitions, 63 changer transitions 0/268 dead transitions. [2024-06-14 12:47:54,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 268 transitions, 2870 flow [2024-06-14 12:47:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:54,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:47:54,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:47:54,962 INFO L175 Difference]: Start difference. First operand has 255 places, 242 transitions, 2168 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:47:54,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 268 transitions, 2870 flow [2024-06-14 12:47:55,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 268 transitions, 2808 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:47:55,332 INFO L231 Difference]: Finished difference. Result has 258 places, 249 transitions, 2373 flow [2024-06-14 12:47:55,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2373, PETRI_PLACES=258, PETRI_TRANSITIONS=249} [2024-06-14 12:47:55,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-14 12:47:55,333 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 249 transitions, 2373 flow [2024-06-14 12:47:55,333 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) [2024-06-14 12:47:55,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:55,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:55,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:47:55,334 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)] === [2024-06-14 12:47:55,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:55,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1335087786, now seen corresponding path program 2 times [2024-06-14 12:47:55,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:55,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378395127] [2024-06-14 12:47:55,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:55,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:57,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:57,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378395127] [2024-06-14 12:47:57,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378395127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:57,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:57,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:57,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712671264] [2024-06-14 12:47:57,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:57,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:57,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:57,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:57,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:57,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:47:57,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 249 transitions, 2373 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) [2024-06-14 12:47:57,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:57,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:47:57,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:58,150 INFO L124 PetriNetUnfolderBase]: 694/1204 cut-off events. [2024-06-14 12:47:58,150 INFO L125 PetriNetUnfolderBase]: For 123701/123701 co-relation queries the response was YES. [2024-06-14 12:47:58,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8329 conditions, 1204 events. 694/1204 cut-off events. For 123701/123701 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6143 event pairs, 52 based on Foata normal form. 2/1205 useless extension candidates. Maximal degree in co-relation 8207. Up to 860 conditions per place. [2024-06-14 12:47:58,162 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 86 changer transitions 0/276 dead transitions. [2024-06-14 12:47:58,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 276 transitions, 3017 flow [2024-06-14 12:47:58,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:47:58,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-14 12:47:58,164 INFO L175 Difference]: Start difference. First operand has 258 places, 249 transitions, 2373 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:47:58,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 276 transitions, 3017 flow [2024-06-14 12:47:58,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 276 transitions, 2831 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:58,539 INFO L231 Difference]: Finished difference. Result has 266 places, 254 transitions, 2482 flow [2024-06-14 12:47:58,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2187, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2482, PETRI_PLACES=266, PETRI_TRANSITIONS=254} [2024-06-14 12:47:58,539 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-14 12:47:58,540 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 254 transitions, 2482 flow [2024-06-14 12:47:58,540 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) [2024-06-14 12:47:58,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:58,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:58,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:47:58,540 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)] === [2024-06-14 12:47:58,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:58,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1340659912, now seen corresponding path program 1 times [2024-06-14 12:47:58,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:58,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606042941] [2024-06-14 12:47:58,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:58,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:00,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:00,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606042941] [2024-06-14 12:48:00,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606042941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:00,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:00,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:00,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452441534] [2024-06-14 12:48:00,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:00,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:00,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:00,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:00,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:00,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:00,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 254 transitions, 2482 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) [2024-06-14 12:48:00,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:00,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:00,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:00,874 INFO L124 PetriNetUnfolderBase]: 698/1212 cut-off events. [2024-06-14 12:48:00,875 INFO L125 PetriNetUnfolderBase]: For 125526/125526 co-relation queries the response was YES. [2024-06-14 12:48:00,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8597 conditions, 1212 events. 698/1212 cut-off events. For 125526/125526 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6174 event pairs, 62 based on Foata normal form. 2/1213 useless extension candidates. Maximal degree in co-relation 8471. Up to 1053 conditions per place. [2024-06-14 12:48:00,886 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 224 selfloop transitions, 48 changer transitions 0/274 dead transitions. [2024-06-14 12:48:00,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 274 transitions, 3086 flow [2024-06-14 12:48:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:48:00,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:48:00,887 INFO L175 Difference]: Start difference. First operand has 266 places, 254 transitions, 2482 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:48:00,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 274 transitions, 3086 flow [2024-06-14 12:48:01,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 274 transitions, 2983 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 12:48:01,234 INFO L231 Difference]: Finished difference. Result has 270 places, 255 transitions, 2487 flow [2024-06-14 12:48:01,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2487, PETRI_PLACES=270, PETRI_TRANSITIONS=255} [2024-06-14 12:48:01,234 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-14 12:48:01,234 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 255 transitions, 2487 flow [2024-06-14 12:48:01,235 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) [2024-06-14 12:48:01,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:01,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:01,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:48:01,235 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)] === [2024-06-14 12:48:01,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:01,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1287747034, now seen corresponding path program 3 times [2024-06-14 12:48:01,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:01,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539879761] [2024-06-14 12:48:01,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:01,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:02,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:02,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:02,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539879761] [2024-06-14 12:48:02,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539879761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:02,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:02,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:02,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433884345] [2024-06-14 12:48:02,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:02,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:02,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:02,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:02,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:02,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:02,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 255 transitions, 2487 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) [2024-06-14 12:48:02,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:02,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:02,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:03,243 INFO L124 PetriNetUnfolderBase]: 704/1222 cut-off events. [2024-06-14 12:48:03,243 INFO L125 PetriNetUnfolderBase]: For 128497/128497 co-relation queries the response was YES. [2024-06-14 12:48:03,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8621 conditions, 1222 events. 704/1222 cut-off events. For 128497/128497 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6225 event pairs, 71 based on Foata normal form. 2/1223 useless extension candidates. Maximal degree in co-relation 8494. Up to 600 conditions per place. [2024-06-14 12:48:03,262 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 154 selfloop transitions, 123 changer transitions 0/279 dead transitions. [2024-06-14 12:48:03,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 279 transitions, 3463 flow [2024-06-14 12:48:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:03,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-14 12:48:03,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-14 12:48:03,263 INFO L175 Difference]: Start difference. First operand has 270 places, 255 transitions, 2487 flow. Second operand 10 states and 137 transitions. [2024-06-14 12:48:03,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 279 transitions, 3463 flow [2024-06-14 12:48:03,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 279 transitions, 3365 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:03,628 INFO L231 Difference]: Finished difference. Result has 272 places, 257 transitions, 2666 flow [2024-06-14 12:48:03,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2666, PETRI_PLACES=272, PETRI_TRANSITIONS=257} [2024-06-14 12:48:03,628 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-14 12:48:03,628 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 257 transitions, 2666 flow [2024-06-14 12:48:03,629 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) [2024-06-14 12:48:03,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:03,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:03,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:48:03,629 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)] === [2024-06-14 12:48:03,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:03,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1287752769, now seen corresponding path program 7 times [2024-06-14 12:48:03,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:03,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749100838] [2024-06-14 12:48:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:03,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:04,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:04,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749100838] [2024-06-14 12:48:04,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749100838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:04,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:04,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:04,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284964947] [2024-06-14 12:48:04,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:04,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:04,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:04,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:04,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:04,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:04,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 257 transitions, 2666 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) [2024-06-14 12:48:04,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:04,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:04,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:05,228 INFO L124 PetriNetUnfolderBase]: 708/1230 cut-off events. [2024-06-14 12:48:05,228 INFO L125 PetriNetUnfolderBase]: For 132298/132298 co-relation queries the response was YES. [2024-06-14 12:48:05,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8908 conditions, 1230 events. 708/1230 cut-off events. For 132298/132298 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6270 event pairs, 76 based on Foata normal form. 2/1231 useless extension candidates. Maximal degree in co-relation 8780. Up to 942 conditions per place. [2024-06-14 12:48:05,239 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 85 changer transitions 0/276 dead transitions. [2024-06-14 12:48:05,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 276 transitions, 3278 flow [2024-06-14 12:48:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 12:48:05,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-14 12:48:05,241 INFO L175 Difference]: Start difference. First operand has 272 places, 257 transitions, 2666 flow. Second operand 10 states and 129 transitions. [2024-06-14 12:48:05,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 276 transitions, 3278 flow [2024-06-14 12:48:05,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 276 transitions, 3027 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:05,630 INFO L231 Difference]: Finished difference. Result has 274 places, 258 transitions, 2605 flow [2024-06-14 12:48:05,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2415, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2605, PETRI_PLACES=274, PETRI_TRANSITIONS=258} [2024-06-14 12:48:05,631 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-14 12:48:05,631 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 258 transitions, 2605 flow [2024-06-14 12:48:05,631 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) [2024-06-14 12:48:05,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:05,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:05,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:48:05,631 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)] === [2024-06-14 12:48:05,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:05,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1340651976, now seen corresponding path program 4 times [2024-06-14 12:48:05,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:05,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17653715] [2024-06-14 12:48:05,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:05,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:07,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:07,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17653715] [2024-06-14 12:48:07,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17653715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:07,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:07,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:07,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049116995] [2024-06-14 12:48:07,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:07,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:07,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:07,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:07,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:07,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:07,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 258 transitions, 2605 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) [2024-06-14 12:48:07,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:07,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:07,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:07,844 INFO L124 PetriNetUnfolderBase]: 704/1224 cut-off events. [2024-06-14 12:48:07,845 INFO L125 PetriNetUnfolderBase]: For 125344/125344 co-relation queries the response was YES. [2024-06-14 12:48:07,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8561 conditions, 1224 events. 704/1224 cut-off events. For 125344/125344 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6306 event pairs, 53 based on Foata normal form. 2/1225 useless extension candidates. Maximal degree in co-relation 8433. Up to 880 conditions per place. [2024-06-14 12:48:07,857 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 89 changer transitions 0/279 dead transitions. [2024-06-14 12:48:07,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 279 transitions, 3221 flow [2024-06-14 12:48:07,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:07,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:07,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:48:07,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:48:07,858 INFO L175 Difference]: Start difference. First operand has 274 places, 258 transitions, 2605 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:48:07,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 279 transitions, 3221 flow [2024-06-14 12:48:08,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 279 transitions, 3031 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:08,200 INFO L231 Difference]: Finished difference. Result has 277 places, 258 transitions, 2598 flow [2024-06-14 12:48:08,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2415, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2598, PETRI_PLACES=277, PETRI_TRANSITIONS=258} [2024-06-14 12:48:08,200 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-14 12:48:08,200 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 258 transitions, 2598 flow [2024-06-14 12:48:08,200 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) [2024-06-14 12:48:08,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:08,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:08,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:48:08,201 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)] === [2024-06-14 12:48:08,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:08,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1334934181, now seen corresponding path program 8 times [2024-06-14 12:48:08,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:08,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598477756] [2024-06-14 12:48:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:08,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598477756] [2024-06-14 12:48:09,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598477756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:09,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:09,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998914617] [2024-06-14 12:48:09,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:09,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:09,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:09,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:09,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:09,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:09,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 258 transitions, 2598 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) [2024-06-14 12:48:09,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:09,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:09,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:09,865 INFO L124 PetriNetUnfolderBase]: 715/1245 cut-off events. [2024-06-14 12:48:09,865 INFO L125 PetriNetUnfolderBase]: For 135135/135135 co-relation queries the response was YES. [2024-06-14 12:48:09,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8892 conditions, 1245 events. 715/1245 cut-off events. For 135135/135135 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6423 event pairs, 76 based on Foata normal form. 2/1246 useless extension candidates. Maximal degree in co-relation 8763. Up to 928 conditions per place. [2024-06-14 12:48:09,877 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 84 changer transitions 0/280 dead transitions. [2024-06-14 12:48:09,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 280 transitions, 3412 flow [2024-06-14 12:48:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:09,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:48:09,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:48:09,879 INFO L175 Difference]: Start difference. First operand has 277 places, 258 transitions, 2598 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:48:09,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 280 transitions, 3412 flow [2024-06-14 12:48:10,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 280 transitions, 3247 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:10,229 INFO L231 Difference]: Finished difference. Result has 279 places, 260 transitions, 2639 flow [2024-06-14 12:48:10,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2433, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2639, PETRI_PLACES=279, PETRI_TRANSITIONS=260} [2024-06-14 12:48:10,230 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-14 12:48:10,230 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 260 transitions, 2639 flow [2024-06-14 12:48:10,230 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) [2024-06-14 12:48:10,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:10,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:10,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:48:10,230 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)] === [2024-06-14 12:48:10,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:10,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1334937901, now seen corresponding path program 9 times [2024-06-14 12:48:10,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:10,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283465292] [2024-06-14 12:48:10,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:10,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:11,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:11,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283465292] [2024-06-14 12:48:11,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283465292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:11,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:11,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:11,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581148334] [2024-06-14 12:48:11,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:11,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:11,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:11,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:11,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:11,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:11,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 260 transitions, 2639 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) [2024-06-14 12:48:11,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:11,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:11,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:11,876 INFO L124 PetriNetUnfolderBase]: 712/1240 cut-off events. [2024-06-14 12:48:11,876 INFO L125 PetriNetUnfolderBase]: For 130779/130779 co-relation queries the response was YES. [2024-06-14 12:48:11,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8707 conditions, 1240 events. 712/1240 cut-off events. For 130779/130779 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6374 event pairs, 77 based on Foata normal form. 2/1241 useless extension candidates. Maximal degree in co-relation 8577. Up to 946 conditions per place. [2024-06-14 12:48:11,888 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 83 changer transitions 0/278 dead transitions. [2024-06-14 12:48:11,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 278 transitions, 3241 flow [2024-06-14 12:48:11,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:11,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:48:11,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:48:11,889 INFO L175 Difference]: Start difference. First operand has 279 places, 260 transitions, 2639 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:48:11,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 278 transitions, 3241 flow [2024-06-14 12:48:12,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 278 transitions, 3119 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:48:12,220 INFO L231 Difference]: Finished difference. Result has 283 places, 260 transitions, 2689 flow [2024-06-14 12:48:12,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2689, PETRI_PLACES=283, PETRI_TRANSITIONS=260} [2024-06-14 12:48:12,221 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-14 12:48:12,221 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 260 transitions, 2689 flow [2024-06-14 12:48:12,221 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) [2024-06-14 12:48:12,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:12,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:12,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:48:12,221 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)] === [2024-06-14 12:48:12,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1065456643, now seen corresponding path program 10 times [2024-06-14 12:48:12,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:12,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604030124] [2024-06-14 12:48:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:12,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:13,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:13,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604030124] [2024-06-14 12:48:13,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604030124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:13,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:13,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:13,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711660948] [2024-06-14 12:48:13,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:13,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:13,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:13,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:13,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:13,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:13,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 260 transitions, 2689 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) [2024-06-14 12:48:13,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:13,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:13,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:13,897 INFO L124 PetriNetUnfolderBase]: 716/1248 cut-off events. [2024-06-14 12:48:13,897 INFO L125 PetriNetUnfolderBase]: For 133730/133730 co-relation queries the response was YES. [2024-06-14 12:48:13,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8894 conditions, 1248 events. 716/1248 cut-off events. For 133730/133730 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6456 event pairs, 85 based on Foata normal form. 2/1249 useless extension candidates. Maximal degree in co-relation 8762. Up to 1126 conditions per place. [2024-06-14 12:48:13,908 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 235 selfloop transitions, 41 changer transitions 0/278 dead transitions. [2024-06-14 12:48:13,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 278 transitions, 3307 flow [2024-06-14 12:48:13,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:13,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:13,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 12:48:13,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-14 12:48:13,909 INFO L175 Difference]: Start difference. First operand has 283 places, 260 transitions, 2689 flow. Second operand 10 states and 126 transitions. [2024-06-14 12:48:13,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 278 transitions, 3307 flow [2024-06-14 12:48:14,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 278 transitions, 3135 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:14,269 INFO L231 Difference]: Finished difference. Result has 284 places, 261 transitions, 2623 flow [2024-06-14 12:48:14,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2623, PETRI_PLACES=284, PETRI_TRANSITIONS=261} [2024-06-14 12:48:14,270 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-14 12:48:14,270 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 261 transitions, 2623 flow [2024-06-14 12:48:14,270 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) [2024-06-14 12:48:14,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:14,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:14,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:48:14,271 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)] === [2024-06-14 12:48:14,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:14,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1913112806, now seen corresponding path program 2 times [2024-06-14 12:48:14,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:14,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709566863] [2024-06-14 12:48:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:14,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:15,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:15,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709566863] [2024-06-14 12:48:15,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709566863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:15,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:15,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:15,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850413893] [2024-06-14 12:48:15,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:15,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:15,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:15,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:15,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:15,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:15,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 261 transitions, 2623 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) [2024-06-14 12:48:15,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:15,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:15,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:16,183 INFO L124 PetriNetUnfolderBase]: 720/1256 cut-off events. [2024-06-14 12:48:16,183 INFO L125 PetriNetUnfolderBase]: For 136419/136419 co-relation queries the response was YES. [2024-06-14 12:48:16,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8864 conditions, 1256 events. 720/1256 cut-off events. For 136419/136419 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6512 event pairs, 79 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 8731. Up to 1185 conditions per place. [2024-06-14 12:48:16,193 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 252 selfloop transitions, 25 changer transitions 0/279 dead transitions. [2024-06-14 12:48:16,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 279 transitions, 3240 flow [2024-06-14 12:48:16,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 12:48:16,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-14 12:48:16,194 INFO L175 Difference]: Start difference. First operand has 284 places, 261 transitions, 2623 flow. Second operand 10 states and 117 transitions. [2024-06-14 12:48:16,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 279 transitions, 3240 flow [2024-06-14 12:48:16,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 279 transitions, 3142 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:16,559 INFO L231 Difference]: Finished difference. Result has 287 places, 263 transitions, 2605 flow [2024-06-14 12:48:16,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2527, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2605, PETRI_PLACES=287, PETRI_TRANSITIONS=263} [2024-06-14 12:48:16,560 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-14 12:48:16,560 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 263 transitions, 2605 flow [2024-06-14 12:48:16,560 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) [2024-06-14 12:48:16,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:16,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:16,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:48:16,560 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)] === [2024-06-14 12:48:16,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:16,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1610686632, now seen corresponding path program 5 times [2024-06-14 12:48:16,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:16,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688086439] [2024-06-14 12:48:16,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:16,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:18,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:18,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688086439] [2024-06-14 12:48:18,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688086439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:18,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:18,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:18,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172400952] [2024-06-14 12:48:18,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:18,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:18,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:18,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:18,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:18,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:18,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 263 transitions, 2605 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) [2024-06-14 12:48:18,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:18,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:18,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:18,825 INFO L124 PetriNetUnfolderBase]: 716/1250 cut-off events. [2024-06-14 12:48:18,825 INFO L125 PetriNetUnfolderBase]: For 131366/131366 co-relation queries the response was YES. [2024-06-14 12:48:18,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8642 conditions, 1250 events. 716/1250 cut-off events. For 131366/131366 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6474 event pairs, 68 based on Foata normal form. 2/1251 useless extension candidates. Maximal degree in co-relation 8507. Up to 1102 conditions per place. [2024-06-14 12:48:18,838 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 48 changer transitions 0/282 dead transitions. [2024-06-14 12:48:18,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 282 transitions, 3221 flow [2024-06-14 12:48:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:48:18,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:48:18,839 INFO L175 Difference]: Start difference. First operand has 287 places, 263 transitions, 2605 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:48:18,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 282 transitions, 3221 flow [2024-06-14 12:48:19,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 282 transitions, 3160 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:19,224 INFO L231 Difference]: Finished difference. Result has 291 places, 263 transitions, 2645 flow [2024-06-14 12:48:19,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2645, PETRI_PLACES=291, PETRI_TRANSITIONS=263} [2024-06-14 12:48:19,225 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-14 12:48:19,225 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 263 transitions, 2645 flow [2024-06-14 12:48:19,225 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) [2024-06-14 12:48:19,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:19,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:19,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:48:19,226 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)] === [2024-06-14 12:48:19,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:19,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2120187257, now seen corresponding path program 11 times [2024-06-14 12:48:19,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:19,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437765449] [2024-06-14 12:48:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:19,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:20,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:20,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437765449] [2024-06-14 12:48:20,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437765449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:20,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:20,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:20,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158362138] [2024-06-14 12:48:20,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:20,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:20,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:20,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:20,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:20,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:20,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 263 transitions, 2645 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) [2024-06-14 12:48:20,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:20,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:20,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:20,970 INFO L124 PetriNetUnfolderBase]: 763/1343 cut-off events. [2024-06-14 12:48:20,970 INFO L125 PetriNetUnfolderBase]: For 192522/192522 co-relation queries the response was YES. [2024-06-14 12:48:20,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 1343 events. 763/1343 cut-off events. For 192522/192522 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7036 event pairs, 93 based on Foata normal form. 2/1344 useless extension candidates. Maximal degree in co-relation 10299. Up to 1116 conditions per place. [2024-06-14 12:48:20,983 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 244 selfloop transitions, 43 changer transitions 0/289 dead transitions. [2024-06-14 12:48:20,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 289 transitions, 3557 flow [2024-06-14 12:48:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:20,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:48:20,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-14 12:48:20,984 INFO L175 Difference]: Start difference. First operand has 291 places, 263 transitions, 2645 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:48:20,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 289 transitions, 3557 flow [2024-06-14 12:48:21,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 289 transitions, 3416 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:21,584 INFO L231 Difference]: Finished difference. Result has 292 places, 265 transitions, 2636 flow [2024-06-14 12:48:21,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2504, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2636, PETRI_PLACES=292, PETRI_TRANSITIONS=265} [2024-06-14 12:48:21,585 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-14 12:48:21,585 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 265 transitions, 2636 flow [2024-06-14 12:48:21,585 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) [2024-06-14 12:48:21,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:21,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:21,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:48:21,585 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)] === [2024-06-14 12:48:21,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1913103506, now seen corresponding path program 3 times [2024-06-14 12:48:21,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:21,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326175968] [2024-06-14 12:48:21,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:21,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:23,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:23,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326175968] [2024-06-14 12:48:23,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326175968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:23,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:23,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:23,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706619376] [2024-06-14 12:48:23,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:23,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:23,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:23,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:23,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:23,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:23,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 265 transitions, 2636 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) [2024-06-14 12:48:23,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:23,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:23,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:23,632 INFO L124 PetriNetUnfolderBase]: 767/1351 cut-off events. [2024-06-14 12:48:23,633 INFO L125 PetriNetUnfolderBase]: For 196493/196493 co-relation queries the response was YES. [2024-06-14 12:48:23,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10487 conditions, 1351 events. 767/1351 cut-off events. For 196493/196493 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7111 event pairs, 96 based on Foata normal form. 2/1352 useless extension candidates. Maximal degree in co-relation 10350. Up to 1271 conditions per place. [2024-06-14 12:48:23,647 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 253 selfloop transitions, 27 changer transitions 0/282 dead transitions. [2024-06-14 12:48:23,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 282 transitions, 3248 flow [2024-06-14 12:48:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:23,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:23,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 12:48:23,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-14 12:48:23,648 INFO L175 Difference]: Start difference. First operand has 292 places, 265 transitions, 2636 flow. Second operand 10 states and 117 transitions. [2024-06-14 12:48:23,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 282 transitions, 3248 flow [2024-06-14 12:48:24,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 282 transitions, 3174 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 12:48:24,166 INFO L231 Difference]: Finished difference. Result has 296 places, 266 transitions, 2632 flow [2024-06-14 12:48:24,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2632, PETRI_PLACES=296, PETRI_TRANSITIONS=266} [2024-06-14 12:48:24,167 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-14 12:48:24,167 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 266 transitions, 2632 flow [2024-06-14 12:48:24,167 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) [2024-06-14 12:48:24,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:24,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:24,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:48:24,167 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)] === [2024-06-14 12:48:24,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1264758433, now seen corresponding path program 12 times [2024-06-14 12:48:24,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:24,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504417698] [2024-06-14 12:48:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:25,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:25,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504417698] [2024-06-14 12:48:25,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504417698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:25,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:25,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:25,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475979299] [2024-06-14 12:48:25,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:25,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:25,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:25,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:25,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:25,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:25,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 266 transitions, 2632 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) [2024-06-14 12:48:25,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:25,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:25,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:26,055 INFO L124 PetriNetUnfolderBase]: 755/1331 cut-off events. [2024-06-14 12:48:26,055 INFO L125 PetriNetUnfolderBase]: For 200767/200767 co-relation queries the response was YES. [2024-06-14 12:48:26,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9354 conditions, 1331 events. 755/1331 cut-off events. For 200767/200767 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7029 event pairs, 85 based on Foata normal form. 14/1344 useless extension candidates. Maximal degree in co-relation 9215. Up to 1183 conditions per place. [2024-06-14 12:48:26,065 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 250 selfloop transitions, 28 changer transitions 9/289 dead transitions. [2024-06-14 12:48:26,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 289 transitions, 3336 flow [2024-06-14 12:48:26,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:26,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:48:26,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 12:48:26,066 INFO L175 Difference]: Start difference. First operand has 296 places, 266 transitions, 2632 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:48:26,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 289 transitions, 3336 flow [2024-06-14 12:48:26,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 289 transitions, 3276 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:26,692 INFO L231 Difference]: Finished difference. Result has 298 places, 264 transitions, 2617 flow [2024-06-14 12:48:26,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2617, PETRI_PLACES=298, PETRI_TRANSITIONS=264} [2024-06-14 12:48:26,693 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-14 12:48:26,693 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 264 transitions, 2617 flow [2024-06-14 12:48:26,693 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) [2024-06-14 12:48:26,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:26,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:26,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:48:26,694 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)] === [2024-06-14 12:48:26,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:26,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1920522116, now seen corresponding path program 4 times [2024-06-14 12:48:26,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:26,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984636642] [2024-06-14 12:48:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:26,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:28,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:28,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984636642] [2024-06-14 12:48:28,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984636642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:28,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:28,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:28,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657231458] [2024-06-14 12:48:28,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:28,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:28,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:28,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:28,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:28,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:28,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 264 transitions, 2617 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) [2024-06-14 12:48:28,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:28,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:28,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:28,691 INFO L124 PetriNetUnfolderBase]: 723/1271 cut-off events. [2024-06-14 12:48:28,691 INFO L125 PetriNetUnfolderBase]: For 152079/152079 co-relation queries the response was YES. [2024-06-14 12:48:28,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9075 conditions, 1271 events. 723/1271 cut-off events. For 152079/152079 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6680 event pairs, 79 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 8935. Up to 1191 conditions per place. [2024-06-14 12:48:28,705 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 253 selfloop transitions, 27 changer transitions 0/282 dead transitions. [2024-06-14 12:48:28,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 282 transitions, 3237 flow [2024-06-14 12:48:28,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:28,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:48:28,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:48:28,706 INFO L175 Difference]: Start difference. First operand has 298 places, 264 transitions, 2617 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:48:28,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 282 transitions, 3237 flow [2024-06-14 12:48:29,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 282 transitions, 3165 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:29,248 INFO L231 Difference]: Finished difference. Result has 300 places, 265 transitions, 2617 flow [2024-06-14 12:48:29,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2617, PETRI_PLACES=300, PETRI_TRANSITIONS=265} [2024-06-14 12:48:29,248 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-14 12:48:29,248 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 265 transitions, 2617 flow [2024-06-14 12:48:29,249 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) [2024-06-14 12:48:29,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:29,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:29,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:48:29,249 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)] === [2024-06-14 12:48:29,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:29,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1920731862, now seen corresponding path program 6 times [2024-06-14 12:48:29,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:29,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509606681] [2024-06-14 12:48:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:29,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:30,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:30,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509606681] [2024-06-14 12:48:30,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509606681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:30,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:30,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:30,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568689498] [2024-06-14 12:48:30,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:30,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:30,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:30,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:30,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:31,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:31,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 265 transitions, 2617 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) [2024-06-14 12:48:31,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:31,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:31,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:31,685 INFO L124 PetriNetUnfolderBase]: 729/1281 cut-off events. [2024-06-14 12:48:31,685 INFO L125 PetriNetUnfolderBase]: For 155217/155217 co-relation queries the response was YES. [2024-06-14 12:48:31,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9130 conditions, 1281 events. 729/1281 cut-off events. For 155217/155217 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6743 event pairs, 85 based on Foata normal form. 2/1282 useless extension candidates. Maximal degree in co-relation 8989. Up to 1182 conditions per place. [2024-06-14 12:48:31,700 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 251 selfloop transitions, 33 changer transitions 0/286 dead transitions. [2024-06-14 12:48:31,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 286 transitions, 3265 flow [2024-06-14 12:48:31,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:31,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:31,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:48:31,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:48:31,703 INFO L175 Difference]: Start difference. First operand has 300 places, 265 transitions, 2617 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:48:31,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 286 transitions, 3265 flow [2024-06-14 12:48:32,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 286 transitions, 3203 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:32,290 INFO L231 Difference]: Finished difference. Result has 303 places, 267 transitions, 2654 flow [2024-06-14 12:48:32,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2555, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2654, PETRI_PLACES=303, PETRI_TRANSITIONS=267} [2024-06-14 12:48:32,290 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-14 12:48:32,290 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 267 transitions, 2654 flow [2024-06-14 12:48:32,291 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) [2024-06-14 12:48:32,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:32,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:32,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:48:32,291 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)] === [2024-06-14 12:48:32,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:32,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1920530052, now seen corresponding path program 7 times [2024-06-14 12:48:32,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:32,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036818717] [2024-06-14 12:48:32,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:32,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:33,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:33,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036818717] [2024-06-14 12:48:33,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036818717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:33,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:33,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:33,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979211288] [2024-06-14 12:48:33,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:33,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:33,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:33,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:33,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:33,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:33,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 267 transitions, 2654 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) [2024-06-14 12:48:33,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:33,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:33,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:34,637 INFO L124 PetriNetUnfolderBase]: 777/1365 cut-off events. [2024-06-14 12:48:34,637 INFO L125 PetriNetUnfolderBase]: For 158646/158646 co-relation queries the response was YES. [2024-06-14 12:48:34,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9650 conditions, 1365 events. 777/1365 cut-off events. For 158646/158646 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7274 event pairs, 101 based on Foata normal form. 2/1366 useless extension candidates. Maximal degree in co-relation 9508. Up to 1269 conditions per place. [2024-06-14 12:48:34,651 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 269 selfloop transitions, 34 changer transitions 0/305 dead transitions. [2024-06-14 12:48:34,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 305 transitions, 3560 flow [2024-06-14 12:48:34,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:48:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:48:34,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 12:48:34,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:48:34,652 INFO L175 Difference]: Start difference. First operand has 303 places, 267 transitions, 2654 flow. Second operand 12 states and 138 transitions. [2024-06-14 12:48:34,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 305 transitions, 3560 flow [2024-06-14 12:48:35,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 305 transitions, 3442 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:35,212 INFO L231 Difference]: Finished difference. Result has 312 places, 286 transitions, 2915 flow [2024-06-14 12:48:35,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2915, PETRI_PLACES=312, PETRI_TRANSITIONS=286} [2024-06-14 12:48:35,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-14 12:48:35,213 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 286 transitions, 2915 flow [2024-06-14 12:48:35,213 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) [2024-06-14 12:48:35,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:35,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:35,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:48:35,214 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)] === [2024-06-14 12:48:35,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash -447691430, now seen corresponding path program 5 times [2024-06-14 12:48:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:35,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979805764] [2024-06-14 12:48:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:35,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:36,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:36,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979805764] [2024-06-14 12:48:36,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979805764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:36,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:36,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:36,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557874816] [2024-06-14 12:48:36,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:36,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:36,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:36,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:36,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:36,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:36,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 286 transitions, 2915 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) [2024-06-14 12:48:36,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:36,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:36,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:37,296 INFO L124 PetriNetUnfolderBase]: 781/1373 cut-off events. [2024-06-14 12:48:37,296 INFO L125 PetriNetUnfolderBase]: For 162310/162310 co-relation queries the response was YES. [2024-06-14 12:48:37,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9788 conditions, 1373 events. 781/1373 cut-off events. For 162310/162310 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7346 event pairs, 81 based on Foata normal form. 2/1374 useless extension candidates. Maximal degree in co-relation 9639. Up to 1247 conditions per place. [2024-06-14 12:48:37,312 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 262 selfloop transitions, 40 changer transitions 0/304 dead transitions. [2024-06-14 12:48:37,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 304 transitions, 3581 flow [2024-06-14 12:48:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:37,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:48:37,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 12:48:37,313 INFO L175 Difference]: Start difference. First operand has 312 places, 286 transitions, 2915 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:48:37,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 304 transitions, 3581 flow [2024-06-14 12:48:37,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 304 transitions, 3535 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-14 12:48:37,870 INFO L231 Difference]: Finished difference. Result has 319 places, 287 transitions, 2969 flow [2024-06-14 12:48:37,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2869, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2969, PETRI_PLACES=319, PETRI_TRANSITIONS=287} [2024-06-14 12:48:37,871 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-14 12:48:37,871 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 287 transitions, 2969 flow [2024-06-14 12:48:37,871 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) [2024-06-14 12:48:37,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:37,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:37,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:48:37,871 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)] === [2024-06-14 12:48:37,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:37,872 INFO L85 PathProgramCache]: Analyzing trace with hash -447699366, now seen corresponding path program 8 times [2024-06-14 12:48:37,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:37,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482114547] [2024-06-14 12:48:37,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:37,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:39,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:39,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482114547] [2024-06-14 12:48:39,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482114547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:39,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:39,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:39,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471893456] [2024-06-14 12:48:39,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:39,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:39,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:39,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:39,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:39,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 287 transitions, 2969 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) [2024-06-14 12:48:39,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:39,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:39,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:40,799 INFO L124 PetriNetUnfolderBase]: 787/1383 cut-off events. [2024-06-14 12:48:40,799 INFO L125 PetriNetUnfolderBase]: For 165621/165621 co-relation queries the response was YES. [2024-06-14 12:48:40,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9901 conditions, 1383 events. 787/1383 cut-off events. For 165621/165621 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7399 event pairs, 82 based on Foata normal form. 2/1384 useless extension candidates. Maximal degree in co-relation 9751. Up to 1108 conditions per place. [2024-06-14 12:48:40,814 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 237 selfloop transitions, 72 changer transitions 0/311 dead transitions. [2024-06-14 12:48:40,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 311 transitions, 4067 flow [2024-06-14 12:48:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:48:40,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:48:40,816 INFO L175 Difference]: Start difference. First operand has 319 places, 287 transitions, 2969 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:48:40,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 311 transitions, 4067 flow [2024-06-14 12:48:41,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 311 transitions, 3977 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:41,565 INFO L231 Difference]: Finished difference. Result has 322 places, 289 transitions, 3052 flow [2024-06-14 12:48:41,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3052, PETRI_PLACES=322, PETRI_TRANSITIONS=289} [2024-06-14 12:48:41,565 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-14 12:48:41,565 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 289 transitions, 3052 flow [2024-06-14 12:48:41,566 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) [2024-06-14 12:48:41,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:41,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:41,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:48:41,566 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)] === [2024-06-14 12:48:41,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:41,567 INFO L85 PathProgramCache]: Analyzing trace with hash -447901176, now seen corresponding path program 9 times [2024-06-14 12:48:41,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:41,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668813882] [2024-06-14 12:48:41,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:41,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:43,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:43,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668813882] [2024-06-14 12:48:43,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668813882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:43,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:43,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:43,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379389523] [2024-06-14 12:48:43,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:43,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:43,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:43,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:43,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:43,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:43,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 289 transitions, 3052 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) [2024-06-14 12:48:43,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:43,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:43,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:44,348 INFO L124 PetriNetUnfolderBase]: 783/1377 cut-off events. [2024-06-14 12:48:44,348 INFO L125 PetriNetUnfolderBase]: For 159619/159619 co-relation queries the response was YES. [2024-06-14 12:48:44,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9777 conditions, 1377 events. 783/1377 cut-off events. For 159619/159619 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7403 event pairs, 74 based on Foata normal form. 2/1378 useless extension candidates. Maximal degree in co-relation 9626. Up to 1186 conditions per place. [2024-06-14 12:48:44,363 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 57 changer transitions 0/309 dead transitions. [2024-06-14 12:48:44,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 309 transitions, 3726 flow [2024-06-14 12:48:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:44,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:48:44,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:48:44,365 INFO L175 Difference]: Start difference. First operand has 322 places, 289 transitions, 3052 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:48:44,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 309 transitions, 3726 flow [2024-06-14 12:48:44,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 309 transitions, 3558 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:44,970 INFO L231 Difference]: Finished difference. Result has 324 places, 289 transitions, 3003 flow [2024-06-14 12:48:44,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2884, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3003, PETRI_PLACES=324, PETRI_TRANSITIONS=289} [2024-06-14 12:48:44,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-14 12:48:44,971 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 289 transitions, 3003 flow [2024-06-14 12:48:44,971 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) [2024-06-14 12:48:44,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:44,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:44,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:48:44,971 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)] === [2024-06-14 12:48:44,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:44,972 INFO L85 PathProgramCache]: Analyzing trace with hash -447906911, now seen corresponding path program 13 times [2024-06-14 12:48:44,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:44,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044043394] [2024-06-14 12:48:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:44,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:46,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:46,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044043394] [2024-06-14 12:48:46,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044043394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:46,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:46,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:46,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028054003] [2024-06-14 12:48:46,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:46,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:46,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:46,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:46,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:46,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 289 transitions, 3003 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) [2024-06-14 12:48:46,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:46,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:46,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:46,950 INFO L124 PetriNetUnfolderBase]: 780/1372 cut-off events. [2024-06-14 12:48:46,950 INFO L125 PetriNetUnfolderBase]: For 152452/152452 co-relation queries the response was YES. [2024-06-14 12:48:46,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9515 conditions, 1372 events. 780/1372 cut-off events. For 152452/152452 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7333 event pairs, 89 based on Foata normal form. 2/1373 useless extension candidates. Maximal degree in co-relation 9363. Up to 1246 conditions per place. [2024-06-14 12:48:46,965 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 258 selfloop transitions, 46 changer transitions 0/306 dead transitions. [2024-06-14 12:48:46,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 306 transitions, 3657 flow [2024-06-14 12:48:46,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:46,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:48:46,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:48:46,967 INFO L175 Difference]: Start difference. First operand has 324 places, 289 transitions, 3003 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:48:46,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 306 transitions, 3657 flow [2024-06-14 12:48:47,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 306 transitions, 3487 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:48:47,540 INFO L231 Difference]: Finished difference. Result has 324 places, 289 transitions, 2929 flow [2024-06-14 12:48:47,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2833, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2929, PETRI_PLACES=324, PETRI_TRANSITIONS=289} [2024-06-14 12:48:47,540 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-14 12:48:47,540 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 289 transitions, 2929 flow [2024-06-14 12:48:47,541 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) [2024-06-14 12:48:47,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:47,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:47,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:48:47,541 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)] === [2024-06-14 12:48:47,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:47,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1746617509, now seen corresponding path program 14 times [2024-06-14 12:48:47,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:47,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532730271] [2024-06-14 12:48:47,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:47,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:48,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:48,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532730271] [2024-06-14 12:48:48,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532730271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:48,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:48,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:48,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698327473] [2024-06-14 12:48:48,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:48,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:48,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:48,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:48,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:48,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:48,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 289 transitions, 2929 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) [2024-06-14 12:48:48,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:48,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:48,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:49,539 INFO L124 PetriNetUnfolderBase]: 813/1439 cut-off events. [2024-06-14 12:48:49,539 INFO L125 PetriNetUnfolderBase]: For 205845/205845 co-relation queries the response was YES. [2024-06-14 12:48:49,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10706 conditions, 1439 events. 813/1439 cut-off events. For 205845/205845 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7719 event pairs, 118 based on Foata normal form. 2/1440 useless extension candidates. Maximal degree in co-relation 10553. Up to 1210 conditions per place. [2024-06-14 12:48:49,555 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 261 selfloop transitions, 48 changer transitions 0/311 dead transitions. [2024-06-14 12:48:49,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 311 transitions, 3847 flow [2024-06-14 12:48:49,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:49,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:49,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:48:49,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:48:49,556 INFO L175 Difference]: Start difference. First operand has 324 places, 289 transitions, 2929 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:48:49,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 311 transitions, 3847 flow [2024-06-14 12:48:50,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 311 transitions, 3745 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:48:50,203 INFO L231 Difference]: Finished difference. Result has 325 places, 290 transitions, 2949 flow [2024-06-14 12:48:50,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2827, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2949, PETRI_PLACES=325, PETRI_TRANSITIONS=290} [2024-06-14 12:48:50,203 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-14 12:48:50,203 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 290 transitions, 2949 flow [2024-06-14 12:48:50,203 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) [2024-06-14 12:48:50,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:50,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:50,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:48:50,204 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)] === [2024-06-14 12:48:50,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:50,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2008692826, now seen corresponding path program 6 times [2024-06-14 12:48:50,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:50,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149077401] [2024-06-14 12:48:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:50,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:51,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:51,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149077401] [2024-06-14 12:48:51,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149077401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:51,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:51,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:51,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217123971] [2024-06-14 12:48:51,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:51,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:51,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:51,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:51,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:51,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:51,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 290 transitions, 2949 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) [2024-06-14 12:48:51,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:51,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:51,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:52,378 INFO L124 PetriNetUnfolderBase]: 817/1447 cut-off events. [2024-06-14 12:48:52,378 INFO L125 PetriNetUnfolderBase]: For 210101/210101 co-relation queries the response was YES. [2024-06-14 12:48:52,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10807 conditions, 1447 events. 817/1447 cut-off events. For 210101/210101 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7788 event pairs, 132 based on Foata normal form. 2/1448 useless extension candidates. Maximal degree in co-relation 10653. Up to 1399 conditions per place. [2024-06-14 12:48:52,399 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 284 selfloop transitions, 18 changer transitions 0/304 dead transitions. [2024-06-14 12:48:52,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 304 transitions, 3603 flow [2024-06-14 12:48:52,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:52,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:48:52,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 12:48:52,400 INFO L175 Difference]: Start difference. First operand has 325 places, 290 transitions, 2949 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:48:52,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 304 transitions, 3603 flow [2024-06-14 12:48:52,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 304 transitions, 3392 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-14 12:48:52,963 INFO L231 Difference]: Finished difference. Result has 324 places, 291 transitions, 2796 flow [2024-06-14 12:48:52,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2738, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2796, PETRI_PLACES=324, PETRI_TRANSITIONS=291} [2024-06-14 12:48:52,964 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-14 12:48:52,964 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 291 transitions, 2796 flow [2024-06-14 12:48:52,964 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) [2024-06-14 12:48:52,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:52,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:52,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:48:52,964 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)] === [2024-06-14 12:48:52,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:52,965 INFO L85 PathProgramCache]: Analyzing trace with hash 130899178, now seen corresponding path program 7 times [2024-06-14 12:48:52,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:52,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130620399] [2024-06-14 12:48:52,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:52,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:54,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:54,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130620399] [2024-06-14 12:48:54,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130620399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:54,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:54,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:54,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327130279] [2024-06-14 12:48:54,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:54,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:54,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:54,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:54,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:54,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:54,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 291 transitions, 2796 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) [2024-06-14 12:48:54,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:54,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:54,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:55,184 INFO L124 PetriNetUnfolderBase]: 821/1455 cut-off events. [2024-06-14 12:48:55,184 INFO L125 PetriNetUnfolderBase]: For 213999/213999 co-relation queries the response was YES. [2024-06-14 12:48:55,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10530 conditions, 1455 events. 821/1455 cut-off events. For 213999/213999 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7863 event pairs, 124 based on Foata normal form. 2/1456 useless extension candidates. Maximal degree in co-relation 10380. Up to 1366 conditions per place. [2024-06-14 12:48:55,202 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 273 selfloop transitions, 30 changer transitions 0/305 dead transitions. [2024-06-14 12:48:55,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 305 transitions, 3454 flow [2024-06-14 12:48:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 12:48:55,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-14 12:48:55,204 INFO L175 Difference]: Start difference. First operand has 324 places, 291 transitions, 2796 flow. Second operand 10 states and 114 transitions. [2024-06-14 12:48:55,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 305 transitions, 3454 flow [2024-06-14 12:48:56,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 305 transitions, 3406 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:56,084 INFO L231 Difference]: Finished difference. Result has 326 places, 292 transitions, 2832 flow [2024-06-14 12:48:56,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2748, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2832, PETRI_PLACES=326, PETRI_TRANSITIONS=292} [2024-06-14 12:48:56,084 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 295 predicate places. [2024-06-14 12:48:56,085 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 292 transitions, 2832 flow [2024-06-14 12:48:56,085 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) [2024-06-14 12:48:56,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:56,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:56,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:48:56,085 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)] === [2024-06-14 12:48:56,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:56,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2008684890, now seen corresponding path program 10 times [2024-06-14 12:48:56,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:56,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17208319] [2024-06-14 12:48:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:56,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:57,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:57,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17208319] [2024-06-14 12:48:57,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17208319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:57,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:57,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:57,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613350855] [2024-06-14 12:48:57,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:57,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:57,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:57,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:57,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:57,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:48:57,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 292 transitions, 2832 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) [2024-06-14 12:48:57,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:57,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:48:57,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:58,063 INFO L124 PetriNetUnfolderBase]: 827/1465 cut-off events. [2024-06-14 12:48:58,063 INFO L125 PetriNetUnfolderBase]: For 217953/217953 co-relation queries the response was YES. [2024-06-14 12:48:58,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10637 conditions, 1465 events. 827/1465 cut-off events. For 217953/217953 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7920 event pairs, 127 based on Foata normal form. 2/1466 useless extension candidates. Maximal degree in co-relation 10486. Up to 1362 conditions per place. [2024-06-14 12:48:58,081 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 277 selfloop transitions, 31 changer transitions 0/310 dead transitions. [2024-06-14 12:48:58,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 310 transitions, 3726 flow [2024-06-14 12:48:58,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:58,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:58,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:48:58,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:48:58,083 INFO L175 Difference]: Start difference. First operand has 326 places, 292 transitions, 2832 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:48:58,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 310 transitions, 3726 flow [2024-06-14 12:48:58,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 310 transitions, 3652 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:58,819 INFO L231 Difference]: Finished difference. Result has 329 places, 294 transitions, 2851 flow [2024-06-14 12:48:58,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2851, PETRI_PLACES=329, PETRI_TRANSITIONS=294} [2024-06-14 12:48:58,820 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-14 12:48:58,820 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 294 transitions, 2851 flow [2024-06-14 12:48:58,820 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) [2024-06-14 12:48:58,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:58,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:58,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:48:58,820 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)] === [2024-06-14 12:48:58,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:58,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1428028902, now seen corresponding path program 11 times [2024-06-14 12:48:58,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:58,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579748396] [2024-06-14 12:48:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:58,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:00,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:00,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579748396] [2024-06-14 12:49:00,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579748396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:00,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:00,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:00,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814952491] [2024-06-14 12:49:00,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:00,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:00,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:00,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:00,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:00,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:00,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 294 transitions, 2851 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) [2024-06-14 12:49:00,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:00,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:00,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:01,029 INFO L124 PetriNetUnfolderBase]: 833/1475 cut-off events. [2024-06-14 12:49:01,030 INFO L125 PetriNetUnfolderBase]: For 222661/222661 co-relation queries the response was YES. [2024-06-14 12:49:01,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10705 conditions, 1475 events. 833/1475 cut-off events. For 222661/222661 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8002 event pairs, 116 based on Foata normal form. 2/1476 useless extension candidates. Maximal degree in co-relation 10553. Up to 1305 conditions per place. [2024-06-14 12:49:01,046 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 263 selfloop transitions, 48 changer transitions 0/313 dead transitions. [2024-06-14 12:49:01,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 313 transitions, 3551 flow [2024-06-14 12:49:01,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:01,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:49:01,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-14 12:49:01,048 INFO L175 Difference]: Start difference. First operand has 329 places, 294 transitions, 2851 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:49:01,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 313 transitions, 3551 flow [2024-06-14 12:49:01,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 313 transitions, 3473 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:01,727 INFO L231 Difference]: Finished difference. Result has 331 places, 297 transitions, 2910 flow [2024-06-14 12:49:01,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2773, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2910, PETRI_PLACES=331, PETRI_TRANSITIONS=297} [2024-06-14 12:49:01,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-14 12:49:01,727 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 297 transitions, 2910 flow [2024-06-14 12:49:01,727 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) [2024-06-14 12:49:01,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:01,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:01,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 12:49:01,728 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)] === [2024-06-14 12:49:01,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2008483080, now seen corresponding path program 12 times [2024-06-14 12:49:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:01,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515811050] [2024-06-14 12:49:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:01,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:03,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:03,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515811050] [2024-06-14 12:49:03,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515811050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:03,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:03,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:03,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152232459] [2024-06-14 12:49:03,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:03,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:03,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:03,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:03,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:03,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:03,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 297 transitions, 2910 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) [2024-06-14 12:49:03,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:03,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:03,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:04,033 INFO L124 PetriNetUnfolderBase]: 829/1469 cut-off events. [2024-06-14 12:49:04,033 INFO L125 PetriNetUnfolderBase]: For 215202/215202 co-relation queries the response was YES. [2024-06-14 12:49:04,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10541 conditions, 1469 events. 829/1469 cut-off events. For 215202/215202 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7980 event pairs, 129 based on Foata normal form. 2/1470 useless extension candidates. Maximal degree in co-relation 10388. Up to 1394 conditions per place. [2024-06-14 12:49:04,049 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 285 selfloop transitions, 25 changer transitions 0/312 dead transitions. [2024-06-14 12:49:04,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 312 transitions, 3572 flow [2024-06-14 12:49:04,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:04,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 12:49:04,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 12:49:04,050 INFO L175 Difference]: Start difference. First operand has 331 places, 297 transitions, 2910 flow. Second operand 11 states and 123 transitions. [2024-06-14 12:49:04,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 312 transitions, 3572 flow [2024-06-14 12:49:04,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 312 transitions, 3470 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 12:49:04,769 INFO L231 Difference]: Finished difference. Result has 336 places, 297 transitions, 2863 flow [2024-06-14 12:49:04,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2863, PETRI_PLACES=336, PETRI_TRANSITIONS=297} [2024-06-14 12:49:04,769 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-14 12:49:04,769 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 297 transitions, 2863 flow [2024-06-14 12:49:04,769 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) [2024-06-14 12:49:04,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:04,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:04,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 12:49:04,770 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)] === [2024-06-14 12:49:04,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:04,770 INFO L85 PathProgramCache]: Analyzing trace with hash 125177167, now seen corresponding path program 15 times [2024-06-14 12:49:04,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:04,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290300923] [2024-06-14 12:49:04,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:04,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:06,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:06,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290300923] [2024-06-14 12:49:06,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290300923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:06,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:06,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:06,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874601678] [2024-06-14 12:49:06,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:06,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:06,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:06,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:06,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:06,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:06,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 297 transitions, 2863 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) [2024-06-14 12:49:06,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:06,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:06,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:06,779 INFO L124 PetriNetUnfolderBase]: 836/1482 cut-off events. [2024-06-14 12:49:06,779 INFO L125 PetriNetUnfolderBase]: For 219236/219236 co-relation queries the response was YES. [2024-06-14 12:49:06,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10578 conditions, 1482 events. 836/1482 cut-off events. For 219236/219236 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8033 event pairs, 129 based on Foata normal form. 2/1483 useless extension candidates. Maximal degree in co-relation 10424. Up to 1346 conditions per place. [2024-06-14 12:49:06,795 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 263 selfloop transitions, 50 changer transitions 0/315 dead transitions. [2024-06-14 12:49:06,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 315 transitions, 3566 flow [2024-06-14 12:49:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:06,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:06,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 12:49:06,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 12:49:06,796 INFO L175 Difference]: Start difference. First operand has 336 places, 297 transitions, 2863 flow. Second operand 11 states and 128 transitions. [2024-06-14 12:49:06,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 315 transitions, 3566 flow [2024-06-14 12:49:07,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 315 transitions, 3491 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:49:07,534 INFO L231 Difference]: Finished difference. Result has 337 places, 300 transitions, 2931 flow [2024-06-14 12:49:07,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2788, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2931, PETRI_PLACES=337, PETRI_TRANSITIONS=300} [2024-06-14 12:49:07,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-14 12:49:07,534 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 300 transitions, 2931 flow [2024-06-14 12:49:07,534 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) [2024-06-14 12:49:07,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:07,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:07,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 12:49:07,535 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)] === [2024-06-14 12:49:07,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:07,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2031549586, now seen corresponding path program 8 times [2024-06-14 12:49:07,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:07,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546652995] [2024-06-14 12:49:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:07,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:08,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:08,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:08,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546652995] [2024-06-14 12:49:08,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546652995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:08,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:08,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:08,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759929164] [2024-06-14 12:49:08,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:08,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:08,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:08,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:08,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:08,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:08,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 300 transitions, 2931 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) [2024-06-14 12:49:08,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:08,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:08,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:09,234 INFO L124 PetriNetUnfolderBase]: 840/1490 cut-off events. [2024-06-14 12:49:09,234 INFO L125 PetriNetUnfolderBase]: For 223400/223400 co-relation queries the response was YES. [2024-06-14 12:49:09,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10713 conditions, 1490 events. 840/1490 cut-off events. For 223400/223400 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8124 event pairs, 139 based on Foata normal form. 2/1491 useless extension candidates. Maximal degree in co-relation 10558. Up to 1446 conditions per place. [2024-06-14 12:49:09,252 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 296 selfloop transitions, 15 changer transitions 0/313 dead transitions. [2024-06-14 12:49:09,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 313 transitions, 3599 flow [2024-06-14 12:49:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:09,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:49:09,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-14 12:49:09,253 INFO L175 Difference]: Start difference. First operand has 337 places, 300 transitions, 2931 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:49:09,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 313 transitions, 3599 flow [2024-06-14 12:49:09,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 313 transitions, 3473 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:09,976 INFO L231 Difference]: Finished difference. Result has 338 places, 301 transitions, 2861 flow [2024-06-14 12:49:09,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2805, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2861, PETRI_PLACES=338, PETRI_TRANSITIONS=301} [2024-06-14 12:49:09,976 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-14 12:49:09,977 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 301 transitions, 2861 flow [2024-06-14 12:49:09,977 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) [2024-06-14 12:49:09,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:09,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:09,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 12:49:09,977 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)] === [2024-06-14 12:49:09,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:09,978 INFO L85 PathProgramCache]: Analyzing trace with hash 324838588, now seen corresponding path program 9 times [2024-06-14 12:49:09,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:09,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37356434] [2024-06-14 12:49:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:09,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:11,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:11,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37356434] [2024-06-14 12:49:11,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37356434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:11,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:11,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:11,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566423952] [2024-06-14 12:49:11,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:11,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:11,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:11,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:11,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:12,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:12,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 301 transitions, 2861 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) [2024-06-14 12:49:12,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:12,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:12,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:12,728 INFO L124 PetriNetUnfolderBase]: 844/1498 cut-off events. [2024-06-14 12:49:12,728 INFO L125 PetriNetUnfolderBase]: For 227655/227655 co-relation queries the response was YES. [2024-06-14 12:49:12,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10674 conditions, 1498 events. 844/1498 cut-off events. For 227655/227655 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8187 event pairs, 140 based on Foata normal form. 2/1499 useless extension candidates. Maximal degree in co-relation 10519. Up to 1429 conditions per place. [2024-06-14 12:49:12,746 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 289 selfloop transitions, 25 changer transitions 0/316 dead transitions. [2024-06-14 12:49:12,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 316 transitions, 3549 flow [2024-06-14 12:49:12,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:12,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 12:49:12,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 12:49:12,747 INFO L175 Difference]: Start difference. First operand has 338 places, 301 transitions, 2861 flow. Second operand 10 states and 116 transitions. [2024-06-14 12:49:12,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 316 transitions, 3549 flow [2024-06-14 12:49:13,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 316 transitions, 3503 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 12:49:13,492 INFO L231 Difference]: Finished difference. Result has 340 places, 302 transitions, 2893 flow [2024-06-14 12:49:13,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2893, PETRI_PLACES=340, PETRI_TRANSITIONS=302} [2024-06-14 12:49:13,492 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-14 12:49:13,492 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 302 transitions, 2893 flow [2024-06-14 12:49:13,493 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) [2024-06-14 12:49:13,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:13,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:13,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 12:49:13,493 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)] === [2024-06-14 12:49:13,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:13,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2030963252, now seen corresponding path program 10 times [2024-06-14 12:49:13,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:13,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683686137] [2024-06-14 12:49:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:13,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:14,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:14,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683686137] [2024-06-14 12:49:14,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683686137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:14,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:14,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:14,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663123367] [2024-06-14 12:49:14,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:14,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:14,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:14,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:14,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:14,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:14,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 302 transitions, 2893 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) [2024-06-14 12:49:14,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:14,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:14,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:15,506 INFO L124 PetriNetUnfolderBase]: 848/1506 cut-off events. [2024-06-14 12:49:15,506 INFO L125 PetriNetUnfolderBase]: For 231995/231995 co-relation queries the response was YES. [2024-06-14 12:49:15,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10777 conditions, 1506 events. 848/1506 cut-off events. For 231995/231995 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8268 event pairs, 146 based on Foata normal form. 2/1507 useless extension candidates. Maximal degree in co-relation 10621. Up to 1459 conditions per place. [2024-06-14 12:49:15,520 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 294 selfloop transitions, 19 changer transitions 0/315 dead transitions. [2024-06-14 12:49:15,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 315 transitions, 3573 flow [2024-06-14 12:49:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 12:49:15,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 12:49:15,521 INFO L175 Difference]: Start difference. First operand has 340 places, 302 transitions, 2893 flow. Second operand 10 states and 109 transitions. [2024-06-14 12:49:15,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 315 transitions, 3573 flow [2024-06-14 12:49:16,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 315 transitions, 3505 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 12:49:16,303 INFO L231 Difference]: Finished difference. Result has 342 places, 303 transitions, 2893 flow [2024-06-14 12:49:16,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2825, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2893, PETRI_PLACES=342, PETRI_TRANSITIONS=303} [2024-06-14 12:49:16,304 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-14 12:49:16,304 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 303 transitions, 2893 flow [2024-06-14 12:49:16,304 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) [2024-06-14 12:49:16,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:16,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:16,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 12:49:16,304 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)] === [2024-06-14 12:49:16,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:16,305 INFO L85 PathProgramCache]: Analyzing trace with hash 324830652, now seen corresponding path program 13 times [2024-06-14 12:49:16,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:16,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876454720] [2024-06-14 12:49:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:16,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:17,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:17,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:17,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876454720] [2024-06-14 12:49:17,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876454720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:17,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:17,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:17,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132888272] [2024-06-14 12:49:17,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:17,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:17,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:17,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:17,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:17,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:17,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 303 transitions, 2893 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) [2024-06-14 12:49:17,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:17,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:17,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:18,599 INFO L124 PetriNetUnfolderBase]: 854/1516 cut-off events. [2024-06-14 12:49:18,600 INFO L125 PetriNetUnfolderBase]: For 235896/235896 co-relation queries the response was YES. [2024-06-14 12:49:18,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10816 conditions, 1516 events. 854/1516 cut-off events. For 235896/235896 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8338 event pairs, 140 based on Foata normal form. 2/1517 useless extension candidates. Maximal degree in co-relation 10659. Up to 1429 conditions per place. [2024-06-14 12:49:18,617 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 290 selfloop transitions, 29 changer transitions 0/321 dead transitions. [2024-06-14 12:49:18,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 321 transitions, 3601 flow [2024-06-14 12:49:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:18,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 12:49:18,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 12:49:18,618 INFO L175 Difference]: Start difference. First operand has 342 places, 303 transitions, 2893 flow. Second operand 11 states and 128 transitions. [2024-06-14 12:49:18,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 321 transitions, 3601 flow [2024-06-14 12:49:19,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 321 transitions, 3543 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 12:49:19,360 INFO L231 Difference]: Finished difference. Result has 345 places, 305 transitions, 2926 flow [2024-06-14 12:49:19,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2835, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2926, PETRI_PLACES=345, PETRI_TRANSITIONS=305} [2024-06-14 12:49:19,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-14 12:49:19,360 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 305 transitions, 2926 flow [2024-06-14 12:49:19,361 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) [2024-06-14 12:49:19,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:19,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:19,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 12:49:19,361 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)] === [2024-06-14 12:49:19,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:19,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2030694482, now seen corresponding path program 11 times [2024-06-14 12:49:19,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:19,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645381067] [2024-06-14 12:49:19,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:19,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:20,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:20,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645381067] [2024-06-14 12:49:20,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645381067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:20,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:20,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:20,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795746874] [2024-06-14 12:49:20,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:20,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:20,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:20,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:20,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:20,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:20,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 305 transitions, 2926 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) [2024-06-14 12:49:20,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:20,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:20,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:21,385 INFO L124 PetriNetUnfolderBase]: 858/1524 cut-off events. [2024-06-14 12:49:21,385 INFO L125 PetriNetUnfolderBase]: For 240219/240219 co-relation queries the response was YES. [2024-06-14 12:49:21,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10920 conditions, 1524 events. 858/1524 cut-off events. For 240219/240219 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8393 event pairs, 145 based on Foata normal form. 2/1525 useless extension candidates. Maximal degree in co-relation 10762. Up to 1477 conditions per place. [2024-06-14 12:49:21,401 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 298 selfloop transitions, 18 changer transitions 0/318 dead transitions. [2024-06-14 12:49:21,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 318 transitions, 3612 flow [2024-06-14 12:49:21,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:49:21,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 12:49:21,402 INFO L175 Difference]: Start difference. First operand has 345 places, 305 transitions, 2926 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:49:21,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 318 transitions, 3612 flow [2024-06-14 12:49:22,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 318 transitions, 3541 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:22,121 INFO L231 Difference]: Finished difference. Result has 346 places, 306 transitions, 2923 flow [2024-06-14 12:49:22,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2855, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2923, PETRI_PLACES=346, PETRI_TRANSITIONS=306} [2024-06-14 12:49:22,121 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-14 12:49:22,121 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 306 transitions, 2923 flow [2024-06-14 12:49:22,121 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) [2024-06-14 12:49:22,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:22,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:22,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 12:49:22,122 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)] === [2024-06-14 12:49:22,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:22,122 INFO L85 PathProgramCache]: Analyzing trace with hash 125327052, now seen corresponding path program 14 times [2024-06-14 12:49:22,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:22,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087990477] [2024-06-14 12:49:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:22,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:23,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:23,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087990477] [2024-06-14 12:49:23,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087990477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:23,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:23,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:23,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881740057] [2024-06-14 12:49:23,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:23,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:23,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:23,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:23,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:23,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:23,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 306 transitions, 2923 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) [2024-06-14 12:49:23,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:23,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:23,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:24,258 INFO L124 PetriNetUnfolderBase]: 854/1518 cut-off events. [2024-06-14 12:49:24,258 INFO L125 PetriNetUnfolderBase]: For 232011/232011 co-relation queries the response was YES. [2024-06-14 12:49:24,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10664 conditions, 1518 events. 854/1518 cut-off events. For 232011/232011 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8407 event pairs, 114 based on Foata normal form. 2/1519 useless extension candidates. Maximal degree in co-relation 10505. Up to 1348 conditions per place. [2024-06-14 12:49:24,278 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 267 selfloop transitions, 52 changer transitions 0/321 dead transitions. [2024-06-14 12:49:24,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 321 transitions, 3603 flow [2024-06-14 12:49:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:49:24,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:49:24,279 INFO L175 Difference]: Start difference. First operand has 346 places, 306 transitions, 2923 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:49:24,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 321 transitions, 3603 flow [2024-06-14 12:49:24,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 321 transitions, 3535 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 12:49:24,997 INFO L231 Difference]: Finished difference. Result has 349 places, 306 transitions, 2964 flow [2024-06-14 12:49:24,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2855, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2964, PETRI_PLACES=349, PETRI_TRANSITIONS=306} [2024-06-14 12:49:24,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-14 12:49:24,997 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 306 transitions, 2964 flow [2024-06-14 12:49:24,997 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) [2024-06-14 12:49:24,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:24,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:24,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 12:49:24,998 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)] === [2024-06-14 12:49:24,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:24,998 INFO L85 PathProgramCache]: Analyzing trace with hash -107478879, now seen corresponding path program 16 times [2024-06-14 12:49:24,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:24,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208595420] [2024-06-14 12:49:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:24,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:26,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:26,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208595420] [2024-06-14 12:49:26,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208595420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:26,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:26,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:26,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110684743] [2024-06-14 12:49:26,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:26,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:26,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:26,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:26,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:26,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:26,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 306 transitions, 2964 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) [2024-06-14 12:49:26,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:26,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:26,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:27,013 INFO L124 PetriNetUnfolderBase]: 874/1562 cut-off events. [2024-06-14 12:49:27,013 INFO L125 PetriNetUnfolderBase]: For 300386/300386 co-relation queries the response was YES. [2024-06-14 12:49:27,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10919 conditions, 1562 events. 874/1562 cut-off events. For 300386/300386 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8678 event pairs, 144 based on Foata normal form. 12/1573 useless extension candidates. Maximal degree in co-relation 10759. Up to 1456 conditions per place. [2024-06-14 12:49:27,031 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 297 selfloop transitions, 21 changer transitions 6/326 dead transitions. [2024-06-14 12:49:27,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 326 transitions, 3703 flow [2024-06-14 12:49:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:27,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:49:27,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:49:27,032 INFO L175 Difference]: Start difference. First operand has 349 places, 306 transitions, 2964 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:49:27,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 326 transitions, 3703 flow [2024-06-14 12:49:27,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 326 transitions, 3601 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:27,804 INFO L231 Difference]: Finished difference. Result has 351 places, 306 transitions, 2920 flow [2024-06-14 12:49:27,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2862, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2920, PETRI_PLACES=351, PETRI_TRANSITIONS=306} [2024-06-14 12:49:27,804 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-14 12:49:27,804 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 306 transitions, 2920 flow [2024-06-14 12:49:27,804 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) [2024-06-14 12:49:27,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:27,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:27,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 12:49:27,805 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)] === [2024-06-14 12:49:27,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:27,805 INFO L85 PathProgramCache]: Analyzing trace with hash -200274907, now seen corresponding path program 17 times [2024-06-14 12:49:27,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:27,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40775411] [2024-06-14 12:49:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:27,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:29,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:29,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40775411] [2024-06-14 12:49:29,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40775411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:29,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:29,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:29,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123181033] [2024-06-14 12:49:29,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:29,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:29,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:29,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:29,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:29,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:29,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 306 transitions, 2920 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) [2024-06-14 12:49:29,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:29,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:29,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:30,372 INFO L124 PetriNetUnfolderBase]: 872/1560 cut-off events. [2024-06-14 12:49:30,372 INFO L125 PetriNetUnfolderBase]: For 240228/240228 co-relation queries the response was YES. [2024-06-14 12:49:30,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10892 conditions, 1560 events. 872/1560 cut-off events. For 240228/240228 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8714 event pairs, 142 based on Foata normal form. 2/1561 useless extension candidates. Maximal degree in co-relation 10731. Up to 1455 conditions per place. [2024-06-14 12:49:30,390 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 280 selfloop transitions, 39 changer transitions 0/321 dead transitions. [2024-06-14 12:49:30,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 321 transitions, 3615 flow [2024-06-14 12:49:30,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:30,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 12:49:30,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 12:49:30,391 INFO L175 Difference]: Start difference. First operand has 351 places, 306 transitions, 2920 flow. Second operand 11 states and 125 transitions. [2024-06-14 12:49:30,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 321 transitions, 3615 flow [2024-06-14 12:49:31,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 321 transitions, 3559 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:31,135 INFO L231 Difference]: Finished difference. Result has 353 places, 307 transitions, 2969 flow [2024-06-14 12:49:31,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2864, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2969, PETRI_PLACES=353, PETRI_TRANSITIONS=307} [2024-06-14 12:49:31,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-14 12:49:31,136 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 307 transitions, 2969 flow [2024-06-14 12:49:31,136 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) [2024-06-14 12:49:31,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:31,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:31,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 12:49:31,137 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)] === [2024-06-14 12:49:31,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:31,137 INFO L85 PathProgramCache]: Analyzing trace with hash 130891242, now seen corresponding path program 15 times [2024-06-14 12:49:31,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:31,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864946113] [2024-06-14 12:49:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:31,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:32,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:32,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864946113] [2024-06-14 12:49:32,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864946113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:32,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:32,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:32,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570151279] [2024-06-14 12:49:32,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:32,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:32,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:32,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:32,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:33,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:33,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 307 transitions, 2969 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) [2024-06-14 12:49:33,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:33,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:33,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:33,796 INFO L124 PetriNetUnfolderBase]: 868/1554 cut-off events. [2024-06-14 12:49:33,796 INFO L125 PetriNetUnfolderBase]: For 231019/231019 co-relation queries the response was YES. [2024-06-14 12:49:33,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10695 conditions, 1554 events. 868/1554 cut-off events. For 231019/231019 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8701 event pairs, 125 based on Foata normal form. 2/1555 useless extension candidates. Maximal degree in co-relation 10533. Up to 1384 conditions per place. [2024-06-14 12:49:33,814 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 271 selfloop transitions, 49 changer transitions 0/322 dead transitions. [2024-06-14 12:49:33,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 322 transitions, 3651 flow [2024-06-14 12:49:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:33,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 12:49:33,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 12:49:33,815 INFO L175 Difference]: Start difference. First operand has 353 places, 307 transitions, 2969 flow. Second operand 11 states and 128 transitions. [2024-06-14 12:49:33,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 322 transitions, 3651 flow [2024-06-14 12:49:34,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 322 transitions, 3542 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:34,507 INFO L231 Difference]: Finished difference. Result has 355 places, 307 transitions, 2963 flow [2024-06-14 12:49:34,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2963, PETRI_PLACES=355, PETRI_TRANSITIONS=307} [2024-06-14 12:49:34,507 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-14 12:49:34,507 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 307 transitions, 2963 flow [2024-06-14 12:49:34,508 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) [2024-06-14 12:49:34,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:34,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:34,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 12:49:34,508 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:34,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:34,508 INFO L85 PathProgramCache]: Analyzing trace with hash 324623107, now seen corresponding path program 18 times [2024-06-14 12:49:34,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:34,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096267119] [2024-06-14 12:49:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:34,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:35,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:35,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096267119] [2024-06-14 12:49:35,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096267119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:35,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:35,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:35,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074428439] [2024-06-14 12:49:35,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:35,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:35,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:36,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:36,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 307 transitions, 2963 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) [2024-06-14 12:49:36,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:36,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:36,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:36,629 INFO L124 PetriNetUnfolderBase]: 871/1567 cut-off events. [2024-06-14 12:49:36,629 INFO L125 PetriNetUnfolderBase]: For 288983/288983 co-relation queries the response was YES. [2024-06-14 12:49:36,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9660 conditions, 1567 events. 871/1567 cut-off events. For 288983/288983 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8819 event pairs, 136 based on Foata normal form. 20/1586 useless extension candidates. Maximal degree in co-relation 9497. Up to 1419 conditions per place. [2024-06-14 12:49:36,650 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 294 selfloop transitions, 24 changer transitions 9/329 dead transitions. [2024-06-14 12:49:36,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 329 transitions, 3748 flow [2024-06-14 12:49:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:36,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:36,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:49:36,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:49:36,651 INFO L175 Difference]: Start difference. First operand has 355 places, 307 transitions, 2963 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:49:36,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 329 transitions, 3748 flow [2024-06-14 12:49:37,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 329 transitions, 3632 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:49:37,234 INFO L231 Difference]: Finished difference. Result has 356 places, 306 transitions, 2899 flow [2024-06-14 12:49:37,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2899, PETRI_PLACES=356, PETRI_TRANSITIONS=306} [2024-06-14 12:49:37,234 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-14 12:49:37,235 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 306 transitions, 2899 flow [2024-06-14 12:49:37,235 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) [2024-06-14 12:49:37,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:37,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:37,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 12:49:37,235 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:37,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:37,235 INFO L85 PathProgramCache]: Analyzing trace with hash 130683697, now seen corresponding path program 19 times [2024-06-14 12:49:37,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:37,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903030163] [2024-06-14 12:49:37,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:37,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:38,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:38,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903030163] [2024-06-14 12:49:38,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903030163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:38,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:38,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:38,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760852408] [2024-06-14 12:49:38,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:38,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:38,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:38,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:38,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:38,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:38,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 306 transitions, 2899 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) [2024-06-14 12:49:38,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:38,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:38,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:39,500 INFO L124 PetriNetUnfolderBase]: 854/1532 cut-off events. [2024-06-14 12:49:39,500 INFO L125 PetriNetUnfolderBase]: For 155981/155981 co-relation queries the response was YES. [2024-06-14 12:49:39,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9179 conditions, 1532 events. 854/1532 cut-off events. For 155981/155981 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8612 event pairs, 129 based on Foata normal form. 2/1533 useless extension candidates. Maximal degree in co-relation 9015. Up to 1402 conditions per place. [2024-06-14 12:49:39,514 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 279 selfloop transitions, 42 changer transitions 0/323 dead transitions. [2024-06-14 12:49:39,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 323 transitions, 3593 flow [2024-06-14 12:49:39,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:39,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:39,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 12:49:39,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 12:49:39,515 INFO L175 Difference]: Start difference. First operand has 356 places, 306 transitions, 2899 flow. Second operand 11 states and 125 transitions. [2024-06-14 12:49:39,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 323 transitions, 3593 flow [2024-06-14 12:49:40,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 323 transitions, 3513 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:40,102 INFO L231 Difference]: Finished difference. Result has 359 places, 309 transitions, 2948 flow [2024-06-14 12:49:40,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2819, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2948, PETRI_PLACES=359, PETRI_TRANSITIONS=309} [2024-06-14 12:49:40,102 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-14 12:49:40,103 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 309 transitions, 2948 flow [2024-06-14 12:49:40,103 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) [2024-06-14 12:49:40,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:40,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:40,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 12:49:40,103 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:40,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:40,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1621968312, now seen corresponding path program 16 times [2024-06-14 12:49:40,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:40,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495722606] [2024-06-14 12:49:40,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:40,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:41,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:41,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495722606] [2024-06-14 12:49:41,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495722606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:41,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:41,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:41,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637514322] [2024-06-14 12:49:41,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:41,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:41,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:41,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:41,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:41,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:41,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 309 transitions, 2948 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) [2024-06-14 12:49:41,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:41,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:41,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:42,380 INFO L124 PetriNetUnfolderBase]: 850/1526 cut-off events. [2024-06-14 12:49:42,380 INFO L125 PetriNetUnfolderBase]: For 144127/144127 co-relation queries the response was YES. [2024-06-14 12:49:42,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8965 conditions, 1526 events. 850/1526 cut-off events. For 144127/144127 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8600 event pairs, 133 based on Foata normal form. 2/1527 useless extension candidates. Maximal degree in co-relation 8799. Up to 1439 conditions per place. [2024-06-14 12:49:42,397 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 295 selfloop transitions, 28 changer transitions 0/325 dead transitions. [2024-06-14 12:49:42,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 325 transitions, 3640 flow [2024-06-14 12:49:42,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:42,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:49:42,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:49:42,398 INFO L175 Difference]: Start difference. First operand has 359 places, 309 transitions, 2948 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:49:42,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 325 transitions, 3640 flow [2024-06-14 12:49:42,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 325 transitions, 3527 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-14 12:49:42,888 INFO L231 Difference]: Finished difference. Result has 359 places, 309 transitions, 2896 flow [2024-06-14 12:49:42,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2835, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2896, PETRI_PLACES=359, PETRI_TRANSITIONS=309} [2024-06-14 12:49:42,888 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-14 12:49:42,888 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 309 transitions, 2896 flow [2024-06-14 12:49:42,888 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) [2024-06-14 12:49:42,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:42,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:42,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 12:49:42,889 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:42,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:42,889 INFO L85 PathProgramCache]: Analyzing trace with hash 332247898, now seen corresponding path program 12 times [2024-06-14 12:49:42,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:42,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344069911] [2024-06-14 12:49:42,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:42,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:44,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:44,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344069911] [2024-06-14 12:49:44,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344069911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:44,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:44,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:44,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936589586] [2024-06-14 12:49:44,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:44,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:44,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:44,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:44,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:44,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:44,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 309 transitions, 2896 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) [2024-06-14 12:49:44,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:44,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:44,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:45,006 INFO L124 PetriNetUnfolderBase]: 854/1534 cut-off events. [2024-06-14 12:49:45,006 INFO L125 PetriNetUnfolderBase]: For 142068/142068 co-relation queries the response was YES. [2024-06-14 12:49:45,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8937 conditions, 1534 events. 854/1534 cut-off events. For 142068/142068 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8666 event pairs, 138 based on Foata normal form. 2/1535 useless extension candidates. Maximal degree in co-relation 8771. Up to 1483 conditions per place. [2024-06-14 12:49:45,020 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 302 selfloop transitions, 19 changer transitions 1/324 dead transitions. [2024-06-14 12:49:45,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 324 transitions, 3615 flow [2024-06-14 12:49:45,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:45,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 12:49:45,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 12:49:45,021 INFO L175 Difference]: Start difference. First operand has 359 places, 309 transitions, 2896 flow. Second operand 10 states and 112 transitions. [2024-06-14 12:49:45,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 324 transitions, 3615 flow [2024-06-14 12:49:45,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 324 transitions, 3509 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:49:45,519 INFO L231 Difference]: Finished difference. Result has 359 places, 310 transitions, 2870 flow [2024-06-14 12:49:45,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2870, PETRI_PLACES=359, PETRI_TRANSITIONS=310} [2024-06-14 12:49:45,520 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-14 12:49:45,520 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 310 transitions, 2870 flow [2024-06-14 12:49:45,520 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) [2024-06-14 12:49:45,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:45,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:45,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 12:49:45,520 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:45,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:45,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2015842666, now seen corresponding path program 13 times [2024-06-14 12:49:45,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:45,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72725684] [2024-06-14 12:49:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:45,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:46,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:46,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72725684] [2024-06-14 12:49:46,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72725684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:46,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:46,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:46,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421406751] [2024-06-14 12:49:46,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:46,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:46,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:46,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:46,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:46,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 310 transitions, 2870 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) [2024-06-14 12:49:46,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:46,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:46,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:47,606 INFO L124 PetriNetUnfolderBase]: 834/1494 cut-off events. [2024-06-14 12:49:47,606 INFO L125 PetriNetUnfolderBase]: For 144501/144501 co-relation queries the response was YES. [2024-06-14 12:49:47,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8761 conditions, 1494 events. 834/1494 cut-off events. For 144501/144501 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8383 event pairs, 130 based on Foata normal form. 2/1495 useless extension candidates. Maximal degree in co-relation 8593. Up to 1455 conditions per place. [2024-06-14 12:49:47,623 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 306 selfloop transitions, 16 changer transitions 0/324 dead transitions. [2024-06-14 12:49:47,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 324 transitions, 3584 flow [2024-06-14 12:49:47,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:49:47,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 12:49:47,624 INFO L175 Difference]: Start difference. First operand has 359 places, 310 transitions, 2870 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:49:47,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 324 transitions, 3584 flow [2024-06-14 12:49:48,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 324 transitions, 3522 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 12:49:48,148 INFO L231 Difference]: Finished difference. Result has 363 places, 312 transitions, 2891 flow [2024-06-14 12:49:48,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2891, PETRI_PLACES=363, PETRI_TRANSITIONS=312} [2024-06-14 12:49:48,149 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-14 12:49:48,149 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 312 transitions, 2891 flow [2024-06-14 12:49:48,149 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) [2024-06-14 12:49:48,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:48,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:48,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 12:49:48,149 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:48,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:48,150 INFO L85 PathProgramCache]: Analyzing trace with hash 332257198, now seen corresponding path program 14 times [2024-06-14 12:49:48,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:48,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835315710] [2024-06-14 12:49:48,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:48,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:49,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:49,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835315710] [2024-06-14 12:49:49,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835315710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:49,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:49,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:49,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936608952] [2024-06-14 12:49:49,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:49,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:49,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:49,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:49,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:49,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:49,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 312 transitions, 2891 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) [2024-06-14 12:49:49,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:49,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:49,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:50,134 INFO L124 PetriNetUnfolderBase]: 838/1502 cut-off events. [2024-06-14 12:49:50,134 INFO L125 PetriNetUnfolderBase]: For 146916/146916 co-relation queries the response was YES. [2024-06-14 12:49:50,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8819 conditions, 1502 events. 838/1502 cut-off events. For 146916/146916 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8465 event pairs, 130 based on Foata normal form. 2/1503 useless extension candidates. Maximal degree in co-relation 8649. Up to 1451 conditions per place. [2024-06-14 12:49:50,152 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 305 selfloop transitions, 19 changer transitions 0/326 dead transitions. [2024-06-14 12:49:50,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 326 transitions, 3603 flow [2024-06-14 12:49:50,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:49:50,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 12:49:50,153 INFO L175 Difference]: Start difference. First operand has 363 places, 312 transitions, 2891 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:49:50,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 326 transitions, 3603 flow [2024-06-14 12:49:50,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 326 transitions, 3548 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 12:49:50,679 INFO L231 Difference]: Finished difference. Result has 366 places, 313 transitions, 2912 flow [2024-06-14 12:49:50,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2836, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2912, PETRI_PLACES=366, PETRI_TRANSITIONS=313} [2024-06-14 12:49:50,680 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-14 12:49:50,680 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 313 transitions, 2912 flow [2024-06-14 12:49:50,680 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) [2024-06-14 12:49:50,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:50,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:50,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 12:49:50,680 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:50,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:50,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2016111436, now seen corresponding path program 15 times [2024-06-14 12:49:50,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:50,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323403623] [2024-06-14 12:49:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:50,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:51,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:51,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323403623] [2024-06-14 12:49:51,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323403623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:51,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:51,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:51,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019836510] [2024-06-14 12:49:51,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:51,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:51,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:51,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:51,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:52,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:52,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 313 transitions, 2912 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) [2024-06-14 12:49:52,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:52,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:52,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:52,542 INFO L124 PetriNetUnfolderBase]: 835/1497 cut-off events. [2024-06-14 12:49:52,542 INFO L125 PetriNetUnfolderBase]: For 134470/134470 co-relation queries the response was YES. [2024-06-14 12:49:52,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8522 conditions, 1497 events. 835/1497 cut-off events. For 134470/134470 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8433 event pairs, 131 based on Foata normal form. 2/1498 useless extension candidates. Maximal degree in co-relation 8351. Up to 1458 conditions per place. [2024-06-14 12:49:52,558 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 308 selfloop transitions, 15 changer transitions 0/325 dead transitions. [2024-06-14 12:49:52,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 325 transitions, 3586 flow [2024-06-14 12:49:52,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:52,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:52,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:49:52,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 12:49:52,606 INFO L175 Difference]: Start difference. First operand has 366 places, 313 transitions, 2912 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:49:52,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 325 transitions, 3586 flow [2024-06-14 12:49:53,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 325 transitions, 3520 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 12:49:53,164 INFO L231 Difference]: Finished difference. Result has 368 places, 313 transitions, 2880 flow [2024-06-14 12:49:53,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2846, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2880, PETRI_PLACES=368, PETRI_TRANSITIONS=313} [2024-06-14 12:49:53,165 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-14 12:49:53,165 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 313 transitions, 2880 flow [2024-06-14 12:49:53,165 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) [2024-06-14 12:49:53,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:53,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:53,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 12:49:53,166 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:53,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:53,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2030971188, now seen corresponding path program 17 times [2024-06-14 12:49:53,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:53,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941925295] [2024-06-14 12:49:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:53,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:54,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:54,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941925295] [2024-06-14 12:49:54,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941925295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:54,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:54,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:54,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963197863] [2024-06-14 12:49:54,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:54,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:54,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:54,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:54,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:54,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:54,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 313 transitions, 2880 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) [2024-06-14 12:49:54,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:54,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:54,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:54,766 INFO L124 PetriNetUnfolderBase]: 831/1491 cut-off events. [2024-06-14 12:49:54,766 INFO L125 PetriNetUnfolderBase]: For 121375/121375 co-relation queries the response was YES. [2024-06-14 12:49:54,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8207 conditions, 1491 events. 831/1491 cut-off events. For 121375/121375 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8405 event pairs, 131 based on Foata normal form. 2/1492 useless extension candidates. Maximal degree in co-relation 8035. Up to 1428 conditions per place. [2024-06-14 12:49:54,781 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 302 selfloop transitions, 23 changer transitions 0/327 dead transitions. [2024-06-14 12:49:54,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 327 transitions, 3586 flow [2024-06-14 12:49:54,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:54,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:49:54,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 12:49:54,782 INFO L175 Difference]: Start difference. First operand has 368 places, 313 transitions, 2880 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:49:54,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 327 transitions, 3586 flow [2024-06-14 12:49:55,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 327 transitions, 3472 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:55,288 INFO L231 Difference]: Finished difference. Result has 369 places, 315 transitions, 2847 flow [2024-06-14 12:49:55,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2766, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2847, PETRI_PLACES=369, PETRI_TRANSITIONS=315} [2024-06-14 12:49:55,289 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-14 12:49:55,289 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 315 transitions, 2847 flow [2024-06-14 12:49:55,289 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) [2024-06-14 12:49:55,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:55,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:55,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 12:49:55,290 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:55,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:55,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2136345336, now seen corresponding path program 18 times [2024-06-14 12:49:55,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:55,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554033172] [2024-06-14 12:49:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:55,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:56,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:56,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554033172] [2024-06-14 12:49:56,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554033172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:56,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:56,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:56,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939835963] [2024-06-14 12:49:56,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:56,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:56,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:56,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:56,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:56,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:56,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 315 transitions, 2847 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) [2024-06-14 12:49:56,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:56,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:56,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:57,672 INFO L124 PetriNetUnfolderBase]: 827/1485 cut-off events. [2024-06-14 12:49:57,672 INFO L125 PetriNetUnfolderBase]: For 107590/107590 co-relation queries the response was YES. [2024-06-14 12:49:57,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7863 conditions, 1485 events. 827/1485 cut-off events. For 107590/107590 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8356 event pairs, 100 based on Foata normal form. 2/1486 useless extension candidates. Maximal degree in co-relation 7690. Up to 1371 conditions per place. [2024-06-14 12:49:57,689 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 297 selfloop transitions, 40 changer transitions 0/339 dead transitions. [2024-06-14 12:49:57,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 339 transitions, 3607 flow [2024-06-14 12:49:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:49:57,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:49:57,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 12:49:57,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-14 12:49:57,690 INFO L175 Difference]: Start difference. First operand has 369 places, 315 transitions, 2847 flow. Second operand 12 states and 143 transitions. [2024-06-14 12:49:57,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 339 transitions, 3607 flow [2024-06-14 12:49:58,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 339 transitions, 3500 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:58,078 INFO L231 Difference]: Finished difference. Result has 373 places, 317 transitions, 2860 flow [2024-06-14 12:49:58,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2860, PETRI_PLACES=373, PETRI_TRANSITIONS=317} [2024-06-14 12:49:58,079 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-14 12:49:58,079 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 317 transitions, 2860 flow [2024-06-14 12:49:58,079 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) [2024-06-14 12:49:58,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:58,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:58,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 12:49:58,080 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:58,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:58,080 INFO L85 PathProgramCache]: Analyzing trace with hash 857051683, now seen corresponding path program 1 times [2024-06-14 12:49:58,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:58,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499819088] [2024-06-14 12:49:58,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:58,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:59,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:59,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499819088] [2024-06-14 12:49:59,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499819088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:59,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:59,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:49:59,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838431825] [2024-06-14 12:49:59,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:59,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:49:59,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:59,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:49:59,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:49:59,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:49:59,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 317 transitions, 2860 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) [2024-06-14 12:49:59,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:59,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:49:59,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:00,589 INFO L124 PetriNetUnfolderBase]: 868/1572 cut-off events. [2024-06-14 12:50:00,589 INFO L125 PetriNetUnfolderBase]: For 228990/228990 co-relation queries the response was YES. [2024-06-14 12:50:00,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9351 conditions, 1572 events. 868/1572 cut-off events. For 228990/228990 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8937 event pairs, 135 based on Foata normal form. 8/1579 useless extension candidates. Maximal degree in co-relation 9177. Up to 1286 conditions per place. [2024-06-14 12:50:00,607 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 310 selfloop transitions, 26 changer transitions 16/354 dead transitions. [2024-06-14 12:50:00,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 354 transitions, 3952 flow [2024-06-14 12:50:00,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:50:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:50:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-14 12:50:00,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-14 12:50:00,608 INFO L175 Difference]: Start difference. First operand has 373 places, 317 transitions, 2860 flow. Second operand 13 states and 160 transitions. [2024-06-14 12:50:00,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 354 transitions, 3952 flow [2024-06-14 12:50:01,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 354 transitions, 3701 flow, removed 25 selfloop flow, removed 13 redundant places. [2024-06-14 12:50:01,323 INFO L231 Difference]: Finished difference. Result has 373 places, 313 transitions, 2642 flow [2024-06-14 12:50:01,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2609, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2642, PETRI_PLACES=373, PETRI_TRANSITIONS=313} [2024-06-14 12:50:01,324 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-14 12:50:01,324 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 313 transitions, 2642 flow [2024-06-14 12:50:01,324 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) [2024-06-14 12:50:01,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:01,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:01,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 12:50:01,324 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:01,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:01,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2118129635, now seen corresponding path program 2 times [2024-06-14 12:50:01,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:01,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038937314] [2024-06-14 12:50:01,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:01,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:03,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:03,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038937314] [2024-06-14 12:50:03,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038937314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:03,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:03,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:03,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74377544] [2024-06-14 12:50:03,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:03,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:03,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:03,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:03,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:03,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:03,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 313 transitions, 2642 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) [2024-06-14 12:50:03,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:03,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:03,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:04,431 INFO L124 PetriNetUnfolderBase]: 870/1580 cut-off events. [2024-06-14 12:50:04,431 INFO L125 PetriNetUnfolderBase]: For 295488/295488 co-relation queries the response was YES. [2024-06-14 12:50:04,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10109 conditions, 1580 events. 870/1580 cut-off events. For 295488/295488 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9000 event pairs, 139 based on Foata normal form. 8/1587 useless extension candidates. Maximal degree in co-relation 9941. Up to 1284 conditions per place. [2024-06-14 12:50:04,457 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 305 selfloop transitions, 21 changer transitions 13/341 dead transitions. [2024-06-14 12:50:04,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 341 transitions, 3708 flow [2024-06-14 12:50:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:04,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:50:04,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:50:04,458 INFO L175 Difference]: Start difference. First operand has 373 places, 313 transitions, 2642 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:50:04,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 341 transitions, 3708 flow [2024-06-14 12:50:05,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 341 transitions, 3643 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-14 12:50:05,233 INFO L231 Difference]: Finished difference. Result has 366 places, 307 transitions, 2590 flow [2024-06-14 12:50:05,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2585, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2590, PETRI_PLACES=366, PETRI_TRANSITIONS=307} [2024-06-14 12:50:05,233 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-14 12:50:05,233 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 307 transitions, 2590 flow [2024-06-14 12:50:05,234 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) [2024-06-14 12:50:05,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:05,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:05,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 12:50:05,234 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:05,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:05,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1045529527, now seen corresponding path program 3 times [2024-06-14 12:50:05,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:05,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110915646] [2024-06-14 12:50:05,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:05,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:06,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:06,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110915646] [2024-06-14 12:50:06,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110915646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:06,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:06,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:06,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529581943] [2024-06-14 12:50:06,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:06,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:06,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:06,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:06,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:06,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:06,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 307 transitions, 2590 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) [2024-06-14 12:50:06,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:06,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:06,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:07,631 INFO L124 PetriNetUnfolderBase]: 851/1547 cut-off events. [2024-06-14 12:50:07,632 INFO L125 PetriNetUnfolderBase]: For 296412/296412 co-relation queries the response was YES. [2024-06-14 12:50:07,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9643 conditions, 1547 events. 851/1547 cut-off events. For 296412/296412 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8745 event pairs, 142 based on Foata normal form. 12/1558 useless extension candidates. Maximal degree in co-relation 9479. Up to 1406 conditions per place. [2024-06-14 12:50:07,657 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 298 selfloop transitions, 28 changer transitions 10/338 dead transitions. [2024-06-14 12:50:07,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 338 transitions, 3400 flow [2024-06-14 12:50:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-14 12:50:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-14 12:50:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 165 transitions. [2024-06-14 12:50:07,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:50:07,658 INFO L175 Difference]: Start difference. First operand has 366 places, 307 transitions, 2590 flow. Second operand 15 states and 165 transitions. [2024-06-14 12:50:07,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 338 transitions, 3400 flow [2024-06-14 12:50:08,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 338 transitions, 3351 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-14 12:50:08,292 INFO L231 Difference]: Finished difference. Result has 362 places, 304 transitions, 2599 flow [2024-06-14 12:50:08,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2541, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2599, PETRI_PLACES=362, PETRI_TRANSITIONS=304} [2024-06-14 12:50:08,292 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-14 12:50:08,292 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 304 transitions, 2599 flow [2024-06-14 12:50:08,292 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) [2024-06-14 12:50:08,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:08,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:08,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 12:50:08,293 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:08,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:08,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1045524877, now seen corresponding path program 4 times [2024-06-14 12:50:08,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:08,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910830365] [2024-06-14 12:50:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:08,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:09,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:09,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910830365] [2024-06-14 12:50:09,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910830365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:09,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:09,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558199001] [2024-06-14 12:50:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:09,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:09,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:09,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:09,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:09,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 304 transitions, 2599 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) [2024-06-14 12:50:09,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:09,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:09,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:10,557 INFO L124 PetriNetUnfolderBase]: 837/1525 cut-off events. [2024-06-14 12:50:10,557 INFO L125 PetriNetUnfolderBase]: For 248161/248161 co-relation queries the response was YES. [2024-06-14 12:50:10,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9470 conditions, 1525 events. 837/1525 cut-off events. For 248161/248161 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8628 event pairs, 134 based on Foata normal form. 8/1532 useless extension candidates. Maximal degree in co-relation 9310. Up to 1284 conditions per place. [2024-06-14 12:50:10,574 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 297 selfloop transitions, 18 changer transitions 20/337 dead transitions. [2024-06-14 12:50:10,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 337 transitions, 3631 flow [2024-06-14 12:50:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:50:10,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:50:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 159 transitions. [2024-06-14 12:50:10,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3549107142857143 [2024-06-14 12:50:10,575 INFO L175 Difference]: Start difference. First operand has 362 places, 304 transitions, 2599 flow. Second operand 14 states and 159 transitions. [2024-06-14 12:50:10,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 337 transitions, 3631 flow [2024-06-14 12:50:11,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 337 transitions, 3542 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-14 12:50:11,276 INFO L231 Difference]: Finished difference. Result has 362 places, 294 transitions, 2474 flow [2024-06-14 12:50:11,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2510, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2474, PETRI_PLACES=362, PETRI_TRANSITIONS=294} [2024-06-14 12:50:11,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-14 12:50:11,277 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 294 transitions, 2474 flow [2024-06-14 12:50:11,277 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) [2024-06-14 12:50:11,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:11,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:11,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 12:50:11,277 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:11,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:11,278 INFO L85 PathProgramCache]: Analyzing trace with hash -557350029, now seen corresponding path program 5 times [2024-06-14 12:50:11,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:11,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685542872] [2024-06-14 12:50:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:11,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:13,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:13,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685542872] [2024-06-14 12:50:13,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685542872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:13,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:13,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:13,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086554414] [2024-06-14 12:50:13,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:13,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:13,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:13,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:13,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:13,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:13,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 294 transitions, 2474 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) [2024-06-14 12:50:13,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:13,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:13,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:14,348 INFO L124 PetriNetUnfolderBase]: 783/1418 cut-off events. [2024-06-14 12:50:14,348 INFO L125 PetriNetUnfolderBase]: For 198474/198474 co-relation queries the response was YES. [2024-06-14 12:50:14,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7143 conditions, 1418 events. 783/1418 cut-off events. For 198474/198474 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7922 event pairs, 118 based on Foata normal form. 16/1433 useless extension candidates. Maximal degree in co-relation 6982. Up to 1284 conditions per place. [2024-06-14 12:50:14,371 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 279 selfloop transitions, 11 changer transitions 25/317 dead transitions. [2024-06-14 12:50:14,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 317 transitions, 3188 flow [2024-06-14 12:50:14,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:14,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:14,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:50:14,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:50:14,373 INFO L175 Difference]: Start difference. First operand has 362 places, 294 transitions, 2474 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:50:14,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 317 transitions, 3188 flow [2024-06-14 12:50:14,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 317 transitions, 3146 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-14 12:50:14,861 INFO L231 Difference]: Finished difference. Result has 351 places, 285 transitions, 2384 flow [2024-06-14 12:50:14,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2384, PETRI_PLACES=351, PETRI_TRANSITIONS=285} [2024-06-14 12:50:14,862 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-14 12:50:14,862 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 285 transitions, 2384 flow [2024-06-14 12:50:14,862 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) [2024-06-14 12:50:14,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:14,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:14,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 12:50:14,862 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:14,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:14,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1265444631, now seen corresponding path program 1 times [2024-06-14 12:50:14,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:14,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913925236] [2024-06-14 12:50:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:14,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913925236] [2024-06-14 12:50:16,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913925236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:16,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:16,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:16,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182140403] [2024-06-14 12:50:16,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:16,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:16,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:16,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:16,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:16,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:16,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 285 transitions, 2384 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) [2024-06-14 12:50:16,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:16,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:16,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:16,747 INFO L124 PetriNetUnfolderBase]: 755/1361 cut-off events. [2024-06-14 12:50:16,747 INFO L125 PetriNetUnfolderBase]: For 168349/168349 co-relation queries the response was YES. [2024-06-14 12:50:16,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6943 conditions, 1361 events. 755/1361 cut-off events. For 168349/168349 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7549 event pairs, 94 based on Foata normal form. 12/1372 useless extension candidates. Maximal degree in co-relation 6783. Up to 716 conditions per place. [2024-06-14 12:50:16,762 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 125 changer transitions 7/308 dead transitions. [2024-06-14 12:50:16,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 308 transitions, 3112 flow [2024-06-14 12:50:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 12:50:16,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:50:16,763 INFO L175 Difference]: Start difference. First operand has 351 places, 285 transitions, 2384 flow. Second operand 11 states and 144 transitions. [2024-06-14 12:50:16,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 308 transitions, 3112 flow [2024-06-14 12:50:17,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 308 transitions, 3066 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:17,079 INFO L231 Difference]: Finished difference. Result has 336 places, 283 transitions, 2602 flow [2024-06-14 12:50:17,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2602, PETRI_PLACES=336, PETRI_TRANSITIONS=283} [2024-06-14 12:50:17,079 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-14 12:50:17,079 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 283 transitions, 2602 flow [2024-06-14 12:50:17,080 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) [2024-06-14 12:50:17,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:17,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:17,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 12:50:17,080 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:17,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:17,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1265451575, now seen corresponding path program 6 times [2024-06-14 12:50:17,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:17,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343373355] [2024-06-14 12:50:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:17,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:18,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:18,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343373355] [2024-06-14 12:50:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343373355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:18,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:18,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:18,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011998373] [2024-06-14 12:50:18,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:18,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:18,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:18,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:18,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:18,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:18,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 283 transitions, 2602 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) [2024-06-14 12:50:18,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:18,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:18,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:19,588 INFO L124 PetriNetUnfolderBase]: 747/1349 cut-off events. [2024-06-14 12:50:19,589 INFO L125 PetriNetUnfolderBase]: For 140970/140970 co-relation queries the response was YES. [2024-06-14 12:50:19,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7098 conditions, 1349 events. 747/1349 cut-off events. For 140970/140970 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7457 event pairs, 96 based on Foata normal form. 10/1358 useless extension candidates. Maximal degree in co-relation 6943. Up to 710 conditions per place. [2024-06-14 12:50:19,603 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 122 changer transitions 9/307 dead transitions. [2024-06-14 12:50:19,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 307 transitions, 3298 flow [2024-06-14 12:50:19,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:19,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:19,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:50:19,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-14 12:50:19,604 INFO L175 Difference]: Start difference. First operand has 336 places, 283 transitions, 2602 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:50:19,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 307 transitions, 3298 flow [2024-06-14 12:50:20,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 307 transitions, 2987 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-06-14 12:50:20,006 INFO L231 Difference]: Finished difference. Result has 335 places, 280 transitions, 2519 flow [2024-06-14 12:50:20,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2519, PETRI_PLACES=335, PETRI_TRANSITIONS=280} [2024-06-14 12:50:20,006 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-14 12:50:20,006 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 280 transitions, 2519 flow [2024-06-14 12:50:20,007 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) [2024-06-14 12:50:20,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:20,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:20,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 12:50:20,007 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:20,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1395894629, now seen corresponding path program 7 times [2024-06-14 12:50:20,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:20,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63890197] [2024-06-14 12:50:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:20,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:21,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:21,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63890197] [2024-06-14 12:50:21,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63890197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:21,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:21,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:21,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118916871] [2024-06-14 12:50:21,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:21,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:21,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:21,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:21,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:21,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:21,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 280 transitions, 2519 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) [2024-06-14 12:50:21,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:21,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:21,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:22,089 INFO L124 PetriNetUnfolderBase]: 769/1399 cut-off events. [2024-06-14 12:50:22,089 INFO L125 PetriNetUnfolderBase]: For 207688/207688 co-relation queries the response was YES. [2024-06-14 12:50:22,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8595 conditions, 1399 events. 769/1399 cut-off events. For 207688/207688 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7843 event pairs, 86 based on Foata normal form. 8/1406 useless extension candidates. Maximal degree in co-relation 8441. Up to 907 conditions per place. [2024-06-14 12:50:22,111 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 89 changer transitions 8/309 dead transitions. [2024-06-14 12:50:22,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 309 transitions, 3501 flow [2024-06-14 12:50:22,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:22,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:50:22,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:50:22,112 INFO L175 Difference]: Start difference. First operand has 335 places, 280 transitions, 2519 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:50:22,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 309 transitions, 3501 flow [2024-06-14 12:50:22,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 309 transitions, 3225 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-14 12:50:22,787 INFO L231 Difference]: Finished difference. Result has 332 places, 277 transitions, 2409 flow [2024-06-14 12:50:22,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2245, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2409, PETRI_PLACES=332, PETRI_TRANSITIONS=277} [2024-06-14 12:50:22,787 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-14 12:50:22,787 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 277 transitions, 2409 flow [2024-06-14 12:50:22,787 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) [2024-06-14 12:50:22,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:22,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:22,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 12:50:22,788 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:22,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:22,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1389223305, now seen corresponding path program 2 times [2024-06-14 12:50:22,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:22,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379754106] [2024-06-14 12:50:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:22,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:24,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:24,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379754106] [2024-06-14 12:50:24,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379754106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:24,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:24,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:24,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292430633] [2024-06-14 12:50:24,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:24,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:24,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:24,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:24,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:24,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:24,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 277 transitions, 2409 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) [2024-06-14 12:50:24,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:24,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:24,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:25,514 INFO L124 PetriNetUnfolderBase]: 747/1353 cut-off events. [2024-06-14 12:50:25,514 INFO L125 PetriNetUnfolderBase]: For 156369/156369 co-relation queries the response was YES. [2024-06-14 12:50:25,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8095 conditions, 1353 events. 747/1353 cut-off events. For 156369/156369 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7511 event pairs, 91 based on Foata normal form. 2/1354 useless extension candidates. Maximal degree in co-relation 7941. Up to 994 conditions per place. [2024-06-14 12:50:25,528 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 90 changer transitions 0/295 dead transitions. [2024-06-14 12:50:25,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 295 transitions, 3073 flow [2024-06-14 12:50:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:50:25,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:50:25,529 INFO L175 Difference]: Start difference. First operand has 332 places, 277 transitions, 2409 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:50:25,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 295 transitions, 3073 flow [2024-06-14 12:50:26,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 295 transitions, 2884 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-14 12:50:26,091 INFO L231 Difference]: Finished difference. Result has 328 places, 278 transitions, 2438 flow [2024-06-14 12:50:26,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2220, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2438, PETRI_PLACES=328, PETRI_TRANSITIONS=278} [2024-06-14 12:50:26,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-14 12:50:26,092 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 278 transitions, 2438 flow [2024-06-14 12:50:26,092 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) [2024-06-14 12:50:26,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:26,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:26,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 12:50:26,092 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:26,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:26,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1994540619, now seen corresponding path program 3 times [2024-06-14 12:50:26,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:26,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817535039] [2024-06-14 12:50:26,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:26,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:27,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:27,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817535039] [2024-06-14 12:50:27,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817535039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:27,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:27,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:27,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014704834] [2024-06-14 12:50:27,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:27,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:27,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:27,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:28,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:28,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 278 transitions, 2438 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) [2024-06-14 12:50:28,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:28,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:28,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:28,742 INFO L124 PetriNetUnfolderBase]: 795/1453 cut-off events. [2024-06-14 12:50:28,742 INFO L125 PetriNetUnfolderBase]: For 267740/267740 co-relation queries the response was YES. [2024-06-14 12:50:28,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9880 conditions, 1453 events. 795/1453 cut-off events. For 267740/267740 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8208 event pairs, 97 based on Foata normal form. 8/1460 useless extension candidates. Maximal degree in co-relation 9727. Up to 881 conditions per place. [2024-06-14 12:50:28,757 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 91 changer transitions 7/306 dead transitions. [2024-06-14 12:50:28,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 306 transitions, 3432 flow [2024-06-14 12:50:28,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:50:28,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:50:28,758 INFO L175 Difference]: Start difference. First operand has 328 places, 278 transitions, 2438 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:50:28,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 306 transitions, 3432 flow [2024-06-14 12:50:29,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 306 transitions, 3224 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:29,628 INFO L231 Difference]: Finished difference. Result has 331 places, 276 transitions, 2403 flow [2024-06-14 12:50:29,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2230, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2403, PETRI_PLACES=331, PETRI_TRANSITIONS=276} [2024-06-14 12:50:29,628 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-14 12:50:29,629 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 276 transitions, 2403 flow [2024-06-14 12:50:29,629 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) [2024-06-14 12:50:29,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:29,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:29,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 12:50:29,629 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:29,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:29,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1389460889, now seen corresponding path program 8 times [2024-06-14 12:50:29,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:29,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137107170] [2024-06-14 12:50:29,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:29,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:31,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:31,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:31,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137107170] [2024-06-14 12:50:31,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137107170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:31,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:31,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:31,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936705299] [2024-06-14 12:50:31,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:31,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:31,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:31,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:31,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:31,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:31,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 276 transitions, 2403 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) [2024-06-14 12:50:31,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:31,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:31,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:32,379 INFO L124 PetriNetUnfolderBase]: 779/1425 cut-off events. [2024-06-14 12:50:32,379 INFO L125 PetriNetUnfolderBase]: For 260395/260395 co-relation queries the response was YES. [2024-06-14 12:50:32,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9255 conditions, 1425 events. 779/1425 cut-off events. For 260395/260395 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8032 event pairs, 101 based on Foata normal form. 10/1434 useless extension candidates. Maximal degree in co-relation 9101. Up to 1022 conditions per place. [2024-06-14 12:50:32,394 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 199 selfloop transitions, 87 changer transitions 11/299 dead transitions. [2024-06-14 12:50:32,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 299 transitions, 3079 flow [2024-06-14 12:50:32,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:32,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:32,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 12:50:32,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-14 12:50:32,395 INFO L175 Difference]: Start difference. First operand has 331 places, 276 transitions, 2403 flow. Second operand 12 states and 146 transitions. [2024-06-14 12:50:32,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 299 transitions, 3079 flow [2024-06-14 12:50:33,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 299 transitions, 2900 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:33,127 INFO L231 Difference]: Finished difference. Result has 330 places, 273 transitions, 2380 flow [2024-06-14 12:50:33,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2224, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2380, PETRI_PLACES=330, PETRI_TRANSITIONS=273} [2024-06-14 12:50:33,127 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-14 12:50:33,127 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 273 transitions, 2380 flow [2024-06-14 12:50:33,128 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) [2024-06-14 12:50:33,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:33,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:33,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 12:50:33,128 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:33,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:33,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1561943835, now seen corresponding path program 4 times [2024-06-14 12:50:33,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:33,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963041937] [2024-06-14 12:50:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:33,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:34,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:34,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963041937] [2024-06-14 12:50:34,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963041937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:34,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:34,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:34,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514302934] [2024-06-14 12:50:34,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:34,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:34,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:34,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:34,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:34,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:34,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 273 transitions, 2380 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) [2024-06-14 12:50:34,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:34,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:34,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:35,474 INFO L124 PetriNetUnfolderBase]: 750/1370 cut-off events. [2024-06-14 12:50:35,474 INFO L125 PetriNetUnfolderBase]: For 192614/192614 co-relation queries the response was YES. [2024-06-14 12:50:35,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8784 conditions, 1370 events. 750/1370 cut-off events. For 192614/192614 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7660 event pairs, 98 based on Foata normal form. 2/1371 useless extension candidates. Maximal degree in co-relation 8631. Up to 1011 conditions per place. [2024-06-14 12:50:35,485 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 87 changer transitions 0/292 dead transitions. [2024-06-14 12:50:35,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 292 transitions, 3044 flow [2024-06-14 12:50:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:50:35,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:50:35,486 INFO L175 Difference]: Start difference. First operand has 330 places, 273 transitions, 2380 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:50:35,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 292 transitions, 3044 flow [2024-06-14 12:50:36,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 292 transitions, 2866 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:36,158 INFO L231 Difference]: Finished difference. Result has 327 places, 274 transitions, 2416 flow [2024-06-14 12:50:36,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2202, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2416, PETRI_PLACES=327, PETRI_TRANSITIONS=274} [2024-06-14 12:50:36,159 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-14 12:50:36,159 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 274 transitions, 2416 flow [2024-06-14 12:50:36,159 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) [2024-06-14 12:50:36,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:36,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:36,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 12:50:36,159 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:36,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:36,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1561950779, now seen corresponding path program 9 times [2024-06-14 12:50:36,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:36,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359038811] [2024-06-14 12:50:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:36,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:37,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:37,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359038811] [2024-06-14 12:50:37,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359038811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:37,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:37,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:37,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367985316] [2024-06-14 12:50:37,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:37,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:37,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:37,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:37,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:37,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:37,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 274 transitions, 2416 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) [2024-06-14 12:50:37,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:37,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:37,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:38,494 INFO L124 PetriNetUnfolderBase]: 768/1416 cut-off events. [2024-06-14 12:50:38,494 INFO L125 PetriNetUnfolderBase]: For 275127/275127 co-relation queries the response was YES. [2024-06-14 12:50:38,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8451 conditions, 1416 events. 768/1416 cut-off events. For 275127/275127 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7961 event pairs, 122 based on Foata normal form. 20/1435 useless extension candidates. Maximal degree in co-relation 8299. Up to 754 conditions per place. [2024-06-14 12:50:38,508 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 114 changer transitions 13/298 dead transitions. [2024-06-14 12:50:38,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 298 transitions, 3094 flow [2024-06-14 12:50:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:38,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:50:38,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:50:38,509 INFO L175 Difference]: Start difference. First operand has 327 places, 274 transitions, 2416 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:50:38,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 298 transitions, 3094 flow [2024-06-14 12:50:39,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 298 transitions, 2890 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:39,045 INFO L231 Difference]: Finished difference. Result has 330 places, 267 transitions, 2390 flow [2024-06-14 12:50:39,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2390, PETRI_PLACES=330, PETRI_TRANSITIONS=267} [2024-06-14 12:50:39,045 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-14 12:50:39,045 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 267 transitions, 2390 flow [2024-06-14 12:50:39,045 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) [2024-06-14 12:50:39,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:39,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:39,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 12:50:39,046 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:39,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:39,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1566712379, now seen corresponding path program 10 times [2024-06-14 12:50:39,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:39,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233960738] [2024-06-14 12:50:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:39,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:40,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:40,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233960738] [2024-06-14 12:50:40,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233960738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:40,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:40,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:40,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055599491] [2024-06-14 12:50:40,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:40,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:40,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:40,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:40,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:40,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:40,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 267 transitions, 2390 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) [2024-06-14 12:50:40,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:40,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:40,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:41,404 INFO L124 PetriNetUnfolderBase]: 750/1390 cut-off events. [2024-06-14 12:50:41,405 INFO L125 PetriNetUnfolderBase]: For 254771/254771 co-relation queries the response was YES. [2024-06-14 12:50:41,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9254 conditions, 1390 events. 750/1390 cut-off events. For 254771/254771 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7849 event pairs, 106 based on Foata normal form. 8/1397 useless extension candidates. Maximal degree in co-relation 9101. Up to 916 conditions per place. [2024-06-14 12:50:41,416 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 197 selfloop transitions, 85 changer transitions 10/294 dead transitions. [2024-06-14 12:50:41,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 294 transitions, 3298 flow [2024-06-14 12:50:41,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:41,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:41,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:50:41,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-14 12:50:41,417 INFO L175 Difference]: Start difference. First operand has 330 places, 267 transitions, 2390 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:50:41,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 294 transitions, 3298 flow [2024-06-14 12:50:42,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 294 transitions, 3056 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-14 12:50:42,030 INFO L231 Difference]: Finished difference. Result has 326 places, 264 transitions, 2307 flow [2024-06-14 12:50:42,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2307, PETRI_PLACES=326, PETRI_TRANSITIONS=264} [2024-06-14 12:50:42,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 295 predicate places. [2024-06-14 12:50:42,030 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 264 transitions, 2307 flow [2024-06-14 12:50:42,030 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) [2024-06-14 12:50:42,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:42,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:42,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 12:50:42,031 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:42,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:42,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1562128409, now seen corresponding path program 11 times [2024-06-14 12:50:42,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:42,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717626373] [2024-06-14 12:50:42,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:42,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:43,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:43,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717626373] [2024-06-14 12:50:43,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717626373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:43,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:43,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:43,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696524749] [2024-06-14 12:50:43,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:43,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:43,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:43,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:43,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:43,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:43,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 264 transitions, 2307 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) [2024-06-14 12:50:43,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:43,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:43,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:44,272 INFO L124 PetriNetUnfolderBase]: 740/1372 cut-off events. [2024-06-14 12:50:44,272 INFO L125 PetriNetUnfolderBase]: For 248535/248535 co-relation queries the response was YES. [2024-06-14 12:50:44,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9082 conditions, 1372 events. 740/1372 cut-off events. For 248535/248535 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7645 event pairs, 104 based on Foata normal form. 8/1379 useless extension candidates. Maximal degree in co-relation 8931. Up to 941 conditions per place. [2024-06-14 12:50:44,287 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 95 changer transitions 11/287 dead transitions. [2024-06-14 12:50:44,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 287 transitions, 2953 flow [2024-06-14 12:50:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:44,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 12:50:44,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-14 12:50:44,288 INFO L175 Difference]: Start difference. First operand has 326 places, 264 transitions, 2307 flow. Second operand 12 states and 147 transitions. [2024-06-14 12:50:44,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 287 transitions, 2953 flow [2024-06-14 12:50:45,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 287 transitions, 2783 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:50:45,034 INFO L231 Difference]: Finished difference. Result has 324 places, 261 transitions, 2303 flow [2024-06-14 12:50:45,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2137, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2303, PETRI_PLACES=324, PETRI_TRANSITIONS=261} [2024-06-14 12:50:45,034 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-14 12:50:45,034 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 261 transitions, 2303 flow [2024-06-14 12:50:45,035 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) [2024-06-14 12:50:45,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:45,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:45,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 12:50:45,035 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:45,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:45,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1436331635, now seen corresponding path program 12 times [2024-06-14 12:50:45,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:45,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277095708] [2024-06-14 12:50:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:45,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:46,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:46,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277095708] [2024-06-14 12:50:46,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277095708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:46,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:46,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:46,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130355922] [2024-06-14 12:50:46,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:46,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:46,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:46,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:46,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:46,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:46,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 261 transitions, 2303 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) [2024-06-14 12:50:46,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:46,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:46,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:46,993 INFO L124 PetriNetUnfolderBase]: 711/1313 cut-off events. [2024-06-14 12:50:46,994 INFO L125 PetriNetUnfolderBase]: For 194157/194157 co-relation queries the response was YES. [2024-06-14 12:50:47,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7974 conditions, 1313 events. 711/1313 cut-off events. For 194157/194157 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7246 event pairs, 112 based on Foata normal form. 8/1320 useless extension candidates. Maximal degree in co-relation 7825. Up to 679 conditions per place. [2024-06-14 12:50:47,007 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 108 changer transitions 9/286 dead transitions. [2024-06-14 12:50:47,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 286 transitions, 3177 flow [2024-06-14 12:50:47,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:47,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:50:47,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-14 12:50:47,008 INFO L175 Difference]: Start difference. First operand has 324 places, 261 transitions, 2303 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:50:47,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 286 transitions, 3177 flow [2024-06-14 12:50:47,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 286 transitions, 2979 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:47,619 INFO L231 Difference]: Finished difference. Result has 319 places, 257 transitions, 2300 flow [2024-06-14 12:50:47,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2300, PETRI_PLACES=319, PETRI_TRANSITIONS=257} [2024-06-14 12:50:47,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-14 12:50:47,619 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 257 transitions, 2300 flow [2024-06-14 12:50:47,619 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) [2024-06-14 12:50:47,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:47,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:47,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 12:50:47,620 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:47,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:47,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1000206733, now seen corresponding path program 13 times [2024-06-14 12:50:47,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:47,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120469633] [2024-06-14 12:50:47,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:47,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120469633] [2024-06-14 12:50:48,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120469633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:48,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:48,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973391679] [2024-06-14 12:50:48,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:48,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:48,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:48,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:48,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:49,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:49,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 257 transitions, 2300 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) [2024-06-14 12:50:49,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:49,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:49,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:49,667 INFO L124 PetriNetUnfolderBase]: 711/1313 cut-off events. [2024-06-14 12:50:49,667 INFO L125 PetriNetUnfolderBase]: For 216946/216946 co-relation queries the response was YES. [2024-06-14 12:50:49,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8056 conditions, 1313 events. 711/1313 cut-off events. For 216946/216946 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7235 event pairs, 114 based on Foata normal form. 12/1324 useless extension candidates. Maximal degree in co-relation 7909. Up to 996 conditions per place. [2024-06-14 12:50:49,681 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 67 changer transitions 7/281 dead transitions. [2024-06-14 12:50:49,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 281 transitions, 2978 flow [2024-06-14 12:50:49,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:49,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:50:49,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-14 12:50:49,682 INFO L175 Difference]: Start difference. First operand has 319 places, 257 transitions, 2300 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:50:49,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 281 transitions, 2978 flow [2024-06-14 12:50:50,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 281 transitions, 2740 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:50:50,199 INFO L231 Difference]: Finished difference. Result has 313 places, 255 transitions, 2217 flow [2024-06-14 12:50:50,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2217, PETRI_PLACES=313, PETRI_TRANSITIONS=255} [2024-06-14 12:50:50,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-14 12:50:50,199 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 255 transitions, 2217 flow [2024-06-14 12:50:50,199 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) [2024-06-14 12:50:50,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:50,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:50,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 12:50:50,200 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:50,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:50,200 INFO L85 PathProgramCache]: Analyzing trace with hash 953311335, now seen corresponding path program 5 times [2024-06-14 12:50:50,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:50,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874597779] [2024-06-14 12:50:50,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:50,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:51,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:51,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874597779] [2024-06-14 12:50:51,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874597779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:51,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:51,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:51,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806411062] [2024-06-14 12:50:51,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:51,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:51,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:51,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:51,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:52,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:52,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 255 transitions, 2217 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) [2024-06-14 12:50:52,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:52,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:52,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:52,464 INFO L124 PetriNetUnfolderBase]: 691/1273 cut-off events. [2024-06-14 12:50:52,464 INFO L125 PetriNetUnfolderBase]: For 155657/155657 co-relation queries the response was YES. [2024-06-14 12:50:52,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7818 conditions, 1273 events. 691/1273 cut-off events. For 155657/155657 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6980 event pairs, 114 based on Foata normal form. 2/1274 useless extension candidates. Maximal degree in co-relation 7673. Up to 1169 conditions per place. [2024-06-14 12:50:52,473 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 237 selfloop transitions, 34 changer transitions 0/273 dead transitions. [2024-06-14 12:50:52,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 273 transitions, 2839 flow [2024-06-14 12:50:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 12:50:52,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 12:50:52,474 INFO L175 Difference]: Start difference. First operand has 313 places, 255 transitions, 2217 flow. Second operand 11 states and 125 transitions. [2024-06-14 12:50:52,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 273 transitions, 2839 flow [2024-06-14 12:50:52,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 273 transitions, 2672 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-14 12:50:52,996 INFO L231 Difference]: Finished difference. Result has 314 places, 256 transitions, 2160 flow [2024-06-14 12:50:52,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2050, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2160, PETRI_PLACES=314, PETRI_TRANSITIONS=256} [2024-06-14 12:50:52,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-14 12:50:52,997 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 256 transitions, 2160 flow [2024-06-14 12:50:52,997 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) [2024-06-14 12:50:52,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:52,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:52,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 12:50:52,997 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:52,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:52,997 INFO L85 PathProgramCache]: Analyzing trace with hash 953599635, now seen corresponding path program 6 times [2024-06-14 12:50:52,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:52,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944349686] [2024-06-14 12:50:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:52,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:54,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:54,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944349686] [2024-06-14 12:50:54,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944349686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:54,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:54,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:54,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34578141] [2024-06-14 12:50:54,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:54,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:54,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:54,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:54,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:54,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:54,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 256 transitions, 2160 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) [2024-06-14 12:50:54,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:54,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:54,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:55,317 INFO L124 PetriNetUnfolderBase]: 703/1301 cut-off events. [2024-06-14 12:50:55,317 INFO L125 PetriNetUnfolderBase]: For 192512/192512 co-relation queries the response was YES. [2024-06-14 12:50:55,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7847 conditions, 1301 events. 703/1301 cut-off events. For 192512/192512 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7207 event pairs, 112 based on Foata normal form. 8/1308 useless extension candidates. Maximal degree in co-relation 7701. Up to 1181 conditions per place. [2024-06-14 12:50:55,330 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 233 selfloop transitions, 28 changer transitions 13/276 dead transitions. [2024-06-14 12:50:55,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 276 transitions, 2798 flow [2024-06-14 12:50:55,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:50:55,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:50:55,331 INFO L175 Difference]: Start difference. First operand has 314 places, 256 transitions, 2160 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:50:55,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 276 transitions, 2798 flow [2024-06-14 12:50:55,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 276 transitions, 2698 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:55,915 INFO L231 Difference]: Finished difference. Result has 316 places, 252 transitions, 2091 flow [2024-06-14 12:50:55,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2091, PETRI_PLACES=316, PETRI_TRANSITIONS=252} [2024-06-14 12:50:55,916 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-14 12:50:55,916 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 252 transitions, 2091 flow [2024-06-14 12:50:55,916 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) [2024-06-14 12:50:55,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:55,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:55,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 12:50:55,916 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:55,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:55,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1000211383, now seen corresponding path program 14 times [2024-06-14 12:50:55,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:55,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380247338] [2024-06-14 12:50:55,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:55,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:57,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:57,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380247338] [2024-06-14 12:50:57,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380247338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:57,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:57,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:57,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005472212] [2024-06-14 12:50:57,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:57,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:57,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:57,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:57,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:57,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:50:57,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 252 transitions, 2091 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) [2024-06-14 12:50:57,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:57,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:50:57,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:58,264 INFO L124 PetriNetUnfolderBase]: 720/1340 cut-off events. [2024-06-14 12:50:58,264 INFO L125 PetriNetUnfolderBase]: For 258571/258571 co-relation queries the response was YES. [2024-06-14 12:50:58,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8968 conditions, 1340 events. 720/1340 cut-off events. For 258571/258571 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7474 event pairs, 111 based on Foata normal form. 8/1347 useless extension candidates. Maximal degree in co-relation 8821. Up to 1014 conditions per place. [2024-06-14 12:50:58,278 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 62 changer transitions 8/281 dead transitions. [2024-06-14 12:50:58,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 281 transitions, 2983 flow [2024-06-14 12:50:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:58,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-14 12:50:58,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-14 12:50:58,279 INFO L175 Difference]: Start difference. First operand has 316 places, 252 transitions, 2091 flow. Second operand 12 states and 154 transitions. [2024-06-14 12:50:58,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 281 transitions, 2983 flow [2024-06-14 12:50:58,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 281 transitions, 2915 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:50:58,869 INFO L231 Difference]: Finished difference. Result has 313 places, 249 transitions, 2136 flow [2024-06-14 12:50:58,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2029, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2136, PETRI_PLACES=313, PETRI_TRANSITIONS=249} [2024-06-14 12:50:58,869 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-14 12:50:58,870 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 249 transitions, 2136 flow [2024-06-14 12:50:58,870 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) [2024-06-14 12:50:58,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:58,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:58,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 12:50:58,870 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:58,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:58,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1130299177, now seen corresponding path program 15 times [2024-06-14 12:50:58,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:58,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130775004] [2024-06-14 12:50:58,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:58,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:00,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:00,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130775004] [2024-06-14 12:51:00,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130775004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:00,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:00,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:00,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867245520] [2024-06-14 12:51:00,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:00,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:00,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:00,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:00,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:00,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:00,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 249 transitions, 2136 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) [2024-06-14 12:51:00,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:00,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:00,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:00,884 INFO L124 PetriNetUnfolderBase]: 725/1355 cut-off events. [2024-06-14 12:51:00,884 INFO L125 PetriNetUnfolderBase]: For 294254/294254 co-relation queries the response was YES. [2024-06-14 12:51:00,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9022 conditions, 1355 events. 725/1355 cut-off events. For 294254/294254 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7586 event pairs, 141 based on Foata normal form. 16/1370 useless extension candidates. Maximal degree in co-relation 8877. Up to 1023 conditions per place. [2024-06-14 12:51:00,899 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 198 selfloop transitions, 57 changer transitions 15/272 dead transitions. [2024-06-14 12:51:00,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 272 transitions, 2760 flow [2024-06-14 12:51:00,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 12:51:00,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:51:00,900 INFO L175 Difference]: Start difference. First operand has 313 places, 249 transitions, 2136 flow. Second operand 11 states and 144 transitions. [2024-06-14 12:51:00,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 272 transitions, 2760 flow [2024-06-14 12:51:01,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 272 transitions, 2634 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 12:51:01,574 INFO L231 Difference]: Finished difference. Result has 309 places, 242 transitions, 2078 flow [2024-06-14 12:51:01,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2078, PETRI_PLACES=309, PETRI_TRANSITIONS=242} [2024-06-14 12:51:01,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-14 12:51:01,574 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 242 transitions, 2078 flow [2024-06-14 12:51:01,575 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) [2024-06-14 12:51:01,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:01,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:01,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 12:51:01,575 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:01,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:01,576 INFO L85 PathProgramCache]: Analyzing trace with hash -993540059, now seen corresponding path program 7 times [2024-06-14 12:51:01,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:01,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733178342] [2024-06-14 12:51:01,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:01,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:03,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:03,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733178342] [2024-06-14 12:51:03,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733178342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:03,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:03,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:03,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462261245] [2024-06-14 12:51:03,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:03,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:03,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:03,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:03,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:03,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:03,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 242 transitions, 2078 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) [2024-06-14 12:51:03,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:03,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:03,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:04,307 INFO L124 PetriNetUnfolderBase]: 686/1274 cut-off events. [2024-06-14 12:51:04,307 INFO L125 PetriNetUnfolderBase]: For 207545/207545 co-relation queries the response was YES. [2024-06-14 12:51:04,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8736 conditions, 1274 events. 686/1274 cut-off events. For 207545/207545 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6994 event pairs, 119 based on Foata normal form. 2/1275 useless extension candidates. Maximal degree in co-relation 8593. Up to 1094 conditions per place. [2024-06-14 12:51:04,319 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 52 changer transitions 0/261 dead transitions. [2024-06-14 12:51:04,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 261 transitions, 2684 flow [2024-06-14 12:51:04,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:04,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:04,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:51:04,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:51:04,320 INFO L175 Difference]: Start difference. First operand has 309 places, 242 transitions, 2078 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:51:04,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 261 transitions, 2684 flow [2024-06-14 12:51:04,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 261 transitions, 2556 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-14 12:51:04,910 INFO L231 Difference]: Finished difference. Result has 301 places, 243 transitions, 2098 flow [2024-06-14 12:51:04,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2098, PETRI_PLACES=301, PETRI_TRANSITIONS=243} [2024-06-14 12:51:04,911 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-14 12:51:04,911 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 243 transitions, 2098 flow [2024-06-14 12:51:04,911 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) [2024-06-14 12:51:04,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:04,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:04,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 12:51:04,911 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:04,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:04,912 INFO L85 PathProgramCache]: Analyzing trace with hash 723614355, now seen corresponding path program 8 times [2024-06-14 12:51:04,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:04,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856698641] [2024-06-14 12:51:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:04,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:06,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:06,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856698641] [2024-06-14 12:51:06,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856698641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:06,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:06,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:06,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361077370] [2024-06-14 12:51:06,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:06,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:06,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:06,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:06,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:06,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:06,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 243 transitions, 2098 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) [2024-06-14 12:51:06,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:06,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:06,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:06,897 INFO L124 PetriNetUnfolderBase]: 690/1282 cut-off events. [2024-06-14 12:51:06,897 INFO L125 PetriNetUnfolderBase]: For 190450/190450 co-relation queries the response was YES. [2024-06-14 12:51:06,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8674 conditions, 1282 events. 690/1282 cut-off events. For 190450/190450 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7064 event pairs, 123 based on Foata normal form. 2/1283 useless extension candidates. Maximal degree in co-relation 8535. Up to 1095 conditions per place. [2024-06-14 12:51:06,910 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 56 changer transitions 0/262 dead transitions. [2024-06-14 12:51:06,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 262 transitions, 2706 flow [2024-06-14 12:51:06,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:06,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:06,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:51:06,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:51:06,911 INFO L175 Difference]: Start difference. First operand has 301 places, 243 transitions, 2098 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:51:06,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 262 transitions, 2706 flow [2024-06-14 12:51:07,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 262 transitions, 2570 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 12:51:07,516 INFO L231 Difference]: Finished difference. Result has 303 places, 244 transitions, 2119 flow [2024-06-14 12:51:07,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2119, PETRI_PLACES=303, PETRI_TRANSITIONS=244} [2024-06-14 12:51:07,517 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-14 12:51:07,517 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 244 transitions, 2119 flow [2024-06-14 12:51:07,517 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) [2024-06-14 12:51:07,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:07,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:07,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 12:51:07,518 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:07,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1157667991, now seen corresponding path program 9 times [2024-06-14 12:51:07,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:07,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063994636] [2024-06-14 12:51:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:07,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:08,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:08,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063994636] [2024-06-14 12:51:08,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063994636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:08,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:08,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:08,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766434972] [2024-06-14 12:51:08,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:08,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:08,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:08,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:08,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:09,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:09,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 244 transitions, 2119 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) [2024-06-14 12:51:09,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:09,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:09,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:09,561 INFO L124 PetriNetUnfolderBase]: 730/1362 cut-off events. [2024-06-14 12:51:09,561 INFO L125 PetriNetUnfolderBase]: For 261846/261846 co-relation queries the response was YES. [2024-06-14 12:51:09,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10331 conditions, 1362 events. 730/1362 cut-off events. For 261846/261846 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7622 event pairs, 139 based on Foata normal form. 2/1363 useless extension candidates. Maximal degree in co-relation 10191. Up to 1025 conditions per place. [2024-06-14 12:51:09,574 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 203 selfloop transitions, 65 changer transitions 0/270 dead transitions. [2024-06-14 12:51:09,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 270 transitions, 3027 flow [2024-06-14 12:51:09,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:09,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:51:09,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:51:09,575 INFO L175 Difference]: Start difference. First operand has 303 places, 244 transitions, 2119 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:51:09,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 270 transitions, 3027 flow [2024-06-14 12:51:10,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 270 transitions, 2882 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 12:51:10,462 INFO L231 Difference]: Finished difference. Result has 305 places, 246 transitions, 2190 flow [2024-06-14 12:51:10,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1974, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2190, PETRI_PLACES=305, PETRI_TRANSITIONS=246} [2024-06-14 12:51:10,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-14 12:51:10,462 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 246 transitions, 2190 flow [2024-06-14 12:51:10,462 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) [2024-06-14 12:51:10,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:10,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:10,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 12:51:10,462 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:10,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:10,463 INFO L85 PathProgramCache]: Analyzing trace with hash 593357301, now seen corresponding path program 10 times [2024-06-14 12:51:10,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:10,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324089331] [2024-06-14 12:51:10,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:10,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:11,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324089331] [2024-06-14 12:51:11,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324089331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:11,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:11,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:11,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283600639] [2024-06-14 12:51:11,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:11,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:11,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:11,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:11,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:12,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:12,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 246 transitions, 2190 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) [2024-06-14 12:51:12,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:12,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:12,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:12,625 INFO L124 PetriNetUnfolderBase]: 770/1442 cut-off events. [2024-06-14 12:51:12,625 INFO L125 PetriNetUnfolderBase]: For 332747/332747 co-relation queries the response was YES. [2024-06-14 12:51:12,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12030 conditions, 1442 events. 770/1442 cut-off events. For 332747/332747 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8214 event pairs, 159 based on Foata normal form. 2/1443 useless extension candidates. Maximal degree in co-relation 11889. Up to 1163 conditions per place. [2024-06-14 12:51:12,639 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 212 selfloop transitions, 57 changer transitions 0/271 dead transitions. [2024-06-14 12:51:12,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 271 transitions, 3102 flow [2024-06-14 12:51:12,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:12,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:51:12,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:51:12,640 INFO L175 Difference]: Start difference. First operand has 305 places, 246 transitions, 2190 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:51:12,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 271 transitions, 3102 flow [2024-06-14 12:51:13,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 271 transitions, 2959 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 12:51:13,651 INFO L231 Difference]: Finished difference. Result has 308 places, 248 transitions, 2251 flow [2024-06-14 12:51:13,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2251, PETRI_PLACES=308, PETRI_TRANSITIONS=248} [2024-06-14 12:51:13,651 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-14 12:51:13,651 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 248 transitions, 2251 flow [2024-06-14 12:51:13,651 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) [2024-06-14 12:51:13,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:13,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:13,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 12:51:13,652 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:13,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:13,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1335045465, now seen corresponding path program 16 times [2024-06-14 12:51:13,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:13,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558601685] [2024-06-14 12:51:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:13,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:15,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:15,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558601685] [2024-06-14 12:51:15,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558601685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:15,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:15,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:15,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014273003] [2024-06-14 12:51:15,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:15,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:15,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:15,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:15,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:15,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:15,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 248 transitions, 2251 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) [2024-06-14 12:51:15,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:15,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:15,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:16,068 INFO L124 PetriNetUnfolderBase]: 795/1493 cut-off events. [2024-06-14 12:51:16,068 INFO L125 PetriNetUnfolderBase]: For 382652/382652 co-relation queries the response was YES. [2024-06-14 12:51:16,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12245 conditions, 1493 events. 795/1493 cut-off events. For 382652/382652 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8622 event pairs, 163 based on Foata normal form. 10/1502 useless extension candidates. Maximal degree in co-relation 12103. Up to 1201 conditions per place. [2024-06-14 12:51:16,083 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 70 changer transitions 11/276 dead transitions. [2024-06-14 12:51:16,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 276 transitions, 2915 flow [2024-06-14 12:51:16,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:51:16,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 12:51:16,085 INFO L175 Difference]: Start difference. First operand has 308 places, 248 transitions, 2251 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:51:16,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 276 transitions, 2915 flow [2024-06-14 12:51:17,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 276 transitions, 2794 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 12:51:17,184 INFO L231 Difference]: Finished difference. Result has 314 places, 249 transitions, 2284 flow [2024-06-14 12:51:17,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2284, PETRI_PLACES=314, PETRI_TRANSITIONS=249} [2024-06-14 12:51:17,185 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-14 12:51:17,185 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 249 transitions, 2284 flow [2024-06-14 12:51:17,185 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) [2024-06-14 12:51:17,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:17,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:17,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 12:51:17,186 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:17,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:17,186 INFO L85 PathProgramCache]: Analyzing trace with hash 723376771, now seen corresponding path program 17 times [2024-06-14 12:51:17,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:17,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411705044] [2024-06-14 12:51:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:17,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:19,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:19,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411705044] [2024-06-14 12:51:19,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411705044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:19,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:19,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:19,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7009846] [2024-06-14 12:51:19,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:19,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:19,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:19,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:19,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:19,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:19,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 249 transitions, 2284 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) [2024-06-14 12:51:19,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:19,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:19,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:20,242 INFO L124 PetriNetUnfolderBase]: 787/1481 cut-off events. [2024-06-14 12:51:20,242 INFO L125 PetriNetUnfolderBase]: For 388931/388931 co-relation queries the response was YES. [2024-06-14 12:51:20,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12284 conditions, 1481 events. 787/1481 cut-off events. For 388931/388931 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8564 event pairs, 169 based on Foata normal form. 10/1490 useless extension candidates. Maximal degree in co-relation 12139. Up to 1265 conditions per place. [2024-06-14 12:51:20,257 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 41 changer transitions 21/273 dead transitions. [2024-06-14 12:51:20,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 273 transitions, 2912 flow [2024-06-14 12:51:20,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:20,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:20,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 12:51:20,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-14 12:51:20,258 INFO L175 Difference]: Start difference. First operand has 314 places, 249 transitions, 2284 flow. Second operand 12 states and 145 transitions. [2024-06-14 12:51:20,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 273 transitions, 2912 flow [2024-06-14 12:51:21,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 273 transitions, 2723 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:51:21,436 INFO L231 Difference]: Finished difference. Result has 314 places, 238 transitions, 2097 flow [2024-06-14 12:51:21,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2097, PETRI_PLACES=314, PETRI_TRANSITIONS=238} [2024-06-14 12:51:21,436 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-14 12:51:21,436 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 238 transitions, 2097 flow [2024-06-14 12:51:21,436 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) [2024-06-14 12:51:21,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:21,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:21,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 12:51:21,437 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:21,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:21,437 INFO L85 PathProgramCache]: Analyzing trace with hash 552991303, now seen corresponding path program 11 times [2024-06-14 12:51:21,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:21,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520578097] [2024-06-14 12:51:21,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:21,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:23,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:23,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520578097] [2024-06-14 12:51:23,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520578097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:23,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:23,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:23,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274108530] [2024-06-14 12:51:23,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:23,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:23,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:23,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:23,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:23,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:23,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 238 transitions, 2097 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) [2024-06-14 12:51:23,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:23,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:23,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:23,897 INFO L124 PetriNetUnfolderBase]: 732/1384 cut-off events. [2024-06-14 12:51:23,897 INFO L125 PetriNetUnfolderBase]: For 332298/332298 co-relation queries the response was YES. [2024-06-14 12:51:23,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11468 conditions, 1384 events. 732/1384 cut-off events. For 332298/332298 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7880 event pairs, 164 based on Foata normal form. 2/1385 useless extension candidates. Maximal degree in co-relation 11325. Up to 1252 conditions per place. [2024-06-14 12:51:23,912 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 212 selfloop transitions, 41 changer transitions 0/255 dead transitions. [2024-06-14 12:51:23,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 255 transitions, 2649 flow [2024-06-14 12:51:23,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:23,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 12:51:23,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 12:51:23,913 INFO L175 Difference]: Start difference. First operand has 314 places, 238 transitions, 2097 flow. Second operand 11 states and 128 transitions. [2024-06-14 12:51:23,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 255 transitions, 2649 flow [2024-06-14 12:51:24,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 255 transitions, 2545 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-14 12:51:24,966 INFO L231 Difference]: Finished difference. Result has 304 places, 238 transitions, 2080 flow [2024-06-14 12:51:24,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1993, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2080, PETRI_PLACES=304, PETRI_TRANSITIONS=238} [2024-06-14 12:51:24,966 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-14 12:51:24,966 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 238 transitions, 2080 flow [2024-06-14 12:51:24,967 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) [2024-06-14 12:51:24,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:24,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:24,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 12:51:24,967 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:24,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:24,968 INFO L85 PathProgramCache]: Analyzing trace with hash -993777643, now seen corresponding path program 18 times [2024-06-14 12:51:24,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:24,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199923242] [2024-06-14 12:51:24,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:24,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:26,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:26,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199923242] [2024-06-14 12:51:26,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199923242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:26,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:26,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:26,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327534492] [2024-06-14 12:51:26,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:26,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:26,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:26,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:26,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:27,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:27,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 238 transitions, 2080 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) [2024-06-14 12:51:27,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:27,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:27,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:27,907 INFO L124 PetriNetUnfolderBase]: 727/1381 cut-off events. [2024-06-14 12:51:27,907 INFO L125 PetriNetUnfolderBase]: For 328823/328823 co-relation queries the response was YES. [2024-06-14 12:51:27,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10170 conditions, 1381 events. 727/1381 cut-off events. For 328823/328823 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7903 event pairs, 147 based on Foata normal form. 16/1396 useless extension candidates. Maximal degree in co-relation 10031. Up to 1097 conditions per place. [2024-06-14 12:51:27,920 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 52 changer transitions 16/263 dead transitions. [2024-06-14 12:51:27,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 263 transitions, 2692 flow [2024-06-14 12:51:27,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:51:27,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:51:27,921 INFO L175 Difference]: Start difference. First operand has 304 places, 238 transitions, 2080 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:51:27,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 263 transitions, 2692 flow [2024-06-14 12:51:28,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 263 transitions, 2579 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-14 12:51:28,705 INFO L231 Difference]: Finished difference. Result has 306 places, 232 transitions, 2031 flow [2024-06-14 12:51:28,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1967, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2031, PETRI_PLACES=306, PETRI_TRANSITIONS=232} [2024-06-14 12:51:28,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-14 12:51:28,705 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 232 transitions, 2031 flow [2024-06-14 12:51:28,705 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) [2024-06-14 12:51:28,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:28,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:28,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 12:51:28,706 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:28,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:28,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1301179237, now seen corresponding path program 19 times [2024-06-14 12:51:28,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:28,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417500830] [2024-06-14 12:51:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:28,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:29,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:29,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417500830] [2024-06-14 12:51:29,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417500830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:29,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:29,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:29,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894116093] [2024-06-14 12:51:29,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:29,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:29,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:29,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:29,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:30,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:30,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 232 transitions, 2031 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) [2024-06-14 12:51:30,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:30,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:30,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:30,596 INFO L124 PetriNetUnfolderBase]: 724/1380 cut-off events. [2024-06-14 12:51:30,597 INFO L125 PetriNetUnfolderBase]: For 344788/344788 co-relation queries the response was YES. [2024-06-14 12:51:30,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11195 conditions, 1380 events. 724/1380 cut-off events. For 344788/344788 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7902 event pairs, 144 based on Foata normal form. 8/1387 useless extension candidates. Maximal degree in co-relation 11055. Up to 999 conditions per place. [2024-06-14 12:51:30,611 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 46 changer transitions 9/259 dead transitions. [2024-06-14 12:51:30,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 259 transitions, 2859 flow [2024-06-14 12:51:30,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:30,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 12:51:30,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:51:30,612 INFO L175 Difference]: Start difference. First operand has 306 places, 232 transitions, 2031 flow. Second operand 11 states and 144 transitions. [2024-06-14 12:51:30,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 259 transitions, 2859 flow [2024-06-14 12:51:31,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 259 transitions, 2731 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-14 12:51:31,506 INFO L231 Difference]: Finished difference. Result has 298 places, 228 transitions, 1974 flow [2024-06-14 12:51:31,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1911, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1974, PETRI_PLACES=298, PETRI_TRANSITIONS=228} [2024-06-14 12:51:31,506 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-14 12:51:31,506 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 228 transitions, 1974 flow [2024-06-14 12:51:31,506 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) [2024-06-14 12:51:31,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:31,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:31,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-14 12:51:31,507 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:31,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:31,507 INFO L85 PathProgramCache]: Analyzing trace with hash 586855237, now seen corresponding path program 20 times [2024-06-14 12:51:31,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:31,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397121425] [2024-06-14 12:51:31,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:31,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:32,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:32,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397121425] [2024-06-14 12:51:32,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397121425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:32,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:32,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:32,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722585880] [2024-06-14 12:51:32,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:32,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:32,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:32,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:32,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:33,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:33,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 228 transitions, 1974 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) [2024-06-14 12:51:33,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:33,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:33,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:33,775 INFO L124 PetriNetUnfolderBase]: 719/1373 cut-off events. [2024-06-14 12:51:33,775 INFO L125 PetriNetUnfolderBase]: For 334864/334864 co-relation queries the response was YES. [2024-06-14 12:51:33,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10958 conditions, 1373 events. 719/1373 cut-off events. For 334864/334864 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7890 event pairs, 164 based on Foata normal form. 10/1382 useless extension candidates. Maximal degree in co-relation 10821. Up to 1183 conditions per place. [2024-06-14 12:51:33,786 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 196 selfloop transitions, 34 changer transitions 19/251 dead transitions. [2024-06-14 12:51:33,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 251 transitions, 2554 flow [2024-06-14 12:51:33,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:33,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-14 12:51:33,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-14 12:51:33,787 INFO L175 Difference]: Start difference. First operand has 298 places, 228 transitions, 1974 flow. Second operand 12 states and 142 transitions. [2024-06-14 12:51:33,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 251 transitions, 2554 flow [2024-06-14 12:51:34,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 251 transitions, 2461 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:51:34,552 INFO L231 Difference]: Finished difference. Result has 296 places, 219 transitions, 1872 flow [2024-06-14 12:51:34,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1872, PETRI_PLACES=296, PETRI_TRANSITIONS=219} [2024-06-14 12:51:34,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-14 12:51:34,553 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 219 transitions, 1872 flow [2024-06-14 12:51:34,553 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) [2024-06-14 12:51:34,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:34,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:34,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-14 12:51:34,553 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:34,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:34,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1301294557, now seen corresponding path program 21 times [2024-06-14 12:51:34,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:34,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656785433] [2024-06-14 12:51:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:34,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:36,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:36,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656785433] [2024-06-14 12:51:36,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656785433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:36,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:36,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:36,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371579888] [2024-06-14 12:51:36,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:36,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:36,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:36,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:36,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:36,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:36,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 219 transitions, 1872 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) [2024-06-14 12:51:36,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:36,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:36,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:36,891 INFO L124 PetriNetUnfolderBase]: 726/1402 cut-off events. [2024-06-14 12:51:36,891 INFO L125 PetriNetUnfolderBase]: For 385817/385817 co-relation queries the response was YES. [2024-06-14 12:51:36,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12294 conditions, 1402 events. 726/1402 cut-off events. For 385817/385817 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8104 event pairs, 171 based on Foata normal form. 8/1409 useless extension candidates. Maximal degree in co-relation 12159. Up to 936 conditions per place. [2024-06-14 12:51:36,905 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 44 changer transitions 11/248 dead transitions. [2024-06-14 12:51:36,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 248 transitions, 2674 flow [2024-06-14 12:51:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:51:36,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-14 12:51:36,906 INFO L175 Difference]: Start difference. First operand has 296 places, 219 transitions, 1872 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:51:36,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 248 transitions, 2674 flow [2024-06-14 12:51:37,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 248 transitions, 2590 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:51:37,870 INFO L231 Difference]: Finished difference. Result has 290 places, 215 transitions, 1857 flow [2024-06-14 12:51:37,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1857, PETRI_PLACES=290, PETRI_TRANSITIONS=215} [2024-06-14 12:51:37,870 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-14 12:51:37,870 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 215 transitions, 1857 flow [2024-06-14 12:51:37,871 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) [2024-06-14 12:51:37,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:37,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:37,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-14 12:51:37,871 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:37,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:37,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1296526013, now seen corresponding path program 12 times [2024-06-14 12:51:37,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:37,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958766884] [2024-06-14 12:51:37,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:37,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:39,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:39,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:39,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958766884] [2024-06-14 12:51:39,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958766884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:39,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:39,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:39,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424712844] [2024-06-14 12:51:39,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:39,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:39,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:39,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:39,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:39,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 215 transitions, 1857 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) [2024-06-14 12:51:39,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:39,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:39,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:40,262 INFO L124 PetriNetUnfolderBase]: 700/1348 cut-off events. [2024-06-14 12:51:40,262 INFO L125 PetriNetUnfolderBase]: For 333873/333873 co-relation queries the response was YES. [2024-06-14 12:51:40,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11788 conditions, 1348 events. 700/1348 cut-off events. For 333873/333873 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7726 event pairs, 184 based on Foata normal form. 2/1349 useless extension candidates. Maximal degree in co-relation 11655. Up to 1204 conditions per place. [2024-06-14 12:51:40,276 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 40 changer transitions 0/232 dead transitions. [2024-06-14 12:51:40,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 232 transitions, 2363 flow [2024-06-14 12:51:40,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:40,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:40,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:51:40,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-14 12:51:40,278 INFO L175 Difference]: Start difference. First operand has 290 places, 215 transitions, 1857 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:51:40,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 232 transitions, 2363 flow [2024-06-14 12:51:41,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 232 transitions, 2274 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:51:41,223 INFO L231 Difference]: Finished difference. Result has 284 places, 215 transitions, 1852 flow [2024-06-14 12:51:41,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1852, PETRI_PLACES=284, PETRI_TRANSITIONS=215} [2024-06-14 12:51:41,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-14 12:51:41,224 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 215 transitions, 1852 flow [2024-06-14 12:51:41,224 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) [2024-06-14 12:51:41,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:41,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:41,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-14 12:51:41,224 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:41,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:41,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1296705937, now seen corresponding path program 22 times [2024-06-14 12:51:41,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:41,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006316062] [2024-06-14 12:51:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:41,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:42,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:42,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006316062] [2024-06-14 12:51:42,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006316062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:42,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:42,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:42,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168092678] [2024-06-14 12:51:42,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:42,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:42,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:42,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:42,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:42,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:42,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 215 transitions, 1852 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) [2024-06-14 12:51:42,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:42,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:42,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:43,308 INFO L124 PetriNetUnfolderBase]: 687/1325 cut-off events. [2024-06-14 12:51:43,308 INFO L125 PetriNetUnfolderBase]: For 304818/304818 co-relation queries the response was YES. [2024-06-14 12:51:43,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10575 conditions, 1325 events. 687/1325 cut-off events. For 304818/304818 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7584 event pairs, 165 based on Foata normal form. 10/1334 useless extension candidates. Maximal degree in co-relation 10445. Up to 1111 conditions per place. [2024-06-14 12:51:43,321 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 186 selfloop transitions, 42 changer transitions 8/238 dead transitions. [2024-06-14 12:51:43,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 238 transitions, 2408 flow [2024-06-14 12:51:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:43,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:43,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:51:43,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-14 12:51:43,322 INFO L175 Difference]: Start difference. First operand has 284 places, 215 transitions, 1852 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:51:43,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 238 transitions, 2408 flow [2024-06-14 12:51:44,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 238 transitions, 2302 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-14 12:51:44,050 INFO L231 Difference]: Finished difference. Result has 285 places, 211 transitions, 1804 flow [2024-06-14 12:51:44,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1804, PETRI_PLACES=285, PETRI_TRANSITIONS=211} [2024-06-14 12:51:44,050 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-14 12:51:44,050 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 211 transitions, 1804 flow [2024-06-14 12:51:44,051 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) [2024-06-14 12:51:44,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:44,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:44,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-14 12:51:44,051 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:44,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:44,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1166267533, now seen corresponding path program 23 times [2024-06-14 12:51:44,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:44,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141574233] [2024-06-14 12:51:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:44,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:45,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:45,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141574233] [2024-06-14 12:51:45,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141574233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:45,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:45,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:45,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926098396] [2024-06-14 12:51:45,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:45,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:45,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:45,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:45,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:45,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:45,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 211 transitions, 1804 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) [2024-06-14 12:51:45,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:45,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:45,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:46,467 INFO L124 PetriNetUnfolderBase]: 642/1238 cut-off events. [2024-06-14 12:51:46,468 INFO L125 PetriNetUnfolderBase]: For 266217/266217 co-relation queries the response was YES. [2024-06-14 12:51:46,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8774 conditions, 1238 events. 642/1238 cut-off events. For 266217/266217 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6974 event pairs, 145 based on Foata normal form. 16/1253 useless extension candidates. Maximal degree in co-relation 8643. Up to 1020 conditions per place. [2024-06-14 12:51:46,480 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 180 selfloop transitions, 33 changer transitions 19/234 dead transitions. [2024-06-14 12:51:46,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 234 transitions, 2350 flow [2024-06-14 12:51:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 12:51:46,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-14 12:51:46,481 INFO L175 Difference]: Start difference. First operand has 285 places, 211 transitions, 1804 flow. Second operand 12 states and 143 transitions. [2024-06-14 12:51:46,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 234 transitions, 2350 flow [2024-06-14 12:51:47,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 234 transitions, 2245 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-14 12:51:47,040 INFO L231 Difference]: Finished difference. Result has 282 places, 203 transitions, 1713 flow [2024-06-14 12:51:47,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1713, PETRI_PLACES=282, PETRI_TRANSITIONS=203} [2024-06-14 12:51:47,040 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-14 12:51:47,041 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 203 transitions, 1713 flow [2024-06-14 12:51:47,041 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) [2024-06-14 12:51:47,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:47,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:47,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-14 12:51:47,041 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:47,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash 716947681, now seen corresponding path program 24 times [2024-06-14 12:51:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:47,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201831307] [2024-06-14 12:51:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:47,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:48,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:48,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201831307] [2024-06-14 12:51:48,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201831307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:48,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:48,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:48,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862532028] [2024-06-14 12:51:48,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:48,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:48,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:48,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:48,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:48,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 203 transitions, 1713 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) [2024-06-14 12:51:48,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:48,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:48,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:49,162 INFO L124 PetriNetUnfolderBase]: 585/1123 cut-off events. [2024-06-14 12:51:49,162 INFO L125 PetriNetUnfolderBase]: For 193274/193274 co-relation queries the response was YES. [2024-06-14 12:51:49,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7385 conditions, 1123 events. 585/1123 cut-off events. For 193274/193274 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6142 event pairs, 118 based on Foata normal form. 10/1132 useless extension candidates. Maximal degree in co-relation 7255. Up to 943 conditions per place. [2024-06-14 12:51:49,173 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 41 changer transitions 11/225 dead transitions. [2024-06-14 12:51:49,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 225 transitions, 2237 flow [2024-06-14 12:51:49,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:49,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:49,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 12:51:49,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 12:51:49,174 INFO L175 Difference]: Start difference. First operand has 282 places, 203 transitions, 1713 flow. Second operand 12 states and 141 transitions. [2024-06-14 12:51:49,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 225 transitions, 2237 flow [2024-06-14 12:51:49,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 225 transitions, 2155 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-14 12:51:49,572 INFO L231 Difference]: Finished difference. Result has 271 places, 200 transitions, 1695 flow [2024-06-14 12:51:49,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1695, PETRI_PLACES=271, PETRI_TRANSITIONS=200} [2024-06-14 12:51:49,573 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-14 12:51:49,573 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 200 transitions, 1695 flow [2024-06-14 12:51:49,573 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) [2024-06-14 12:51:49,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:49,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:49,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-14 12:51:49,573 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:49,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:49,573 INFO L85 PathProgramCache]: Analyzing trace with hash 716943031, now seen corresponding path program 25 times [2024-06-14 12:51:49,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:49,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453088674] [2024-06-14 12:51:49,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:49,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:51,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:51,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453088674] [2024-06-14 12:51:51,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453088674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:51,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:51,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:51,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542516898] [2024-06-14 12:51:51,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:51,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:51,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:51,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:51,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:51,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:51,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 200 transitions, 1695 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) [2024-06-14 12:51:51,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:51,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:51,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:51,731 INFO L124 PetriNetUnfolderBase]: 551/1057 cut-off events. [2024-06-14 12:51:51,731 INFO L125 PetriNetUnfolderBase]: For 132827/132827 co-relation queries the response was YES. [2024-06-14 12:51:51,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6276 conditions, 1057 events. 551/1057 cut-off events. For 132827/132827 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5704 event pairs, 96 based on Foata normal form. 8/1064 useless extension candidates. Maximal degree in co-relation 6151. Up to 887 conditions per place. [2024-06-14 12:51:51,740 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 37 changer transitions 14/221 dead transitions. [2024-06-14 12:51:51,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 221 transitions, 2201 flow [2024-06-14 12:51:51,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 12:51:51,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:51:51,741 INFO L175 Difference]: Start difference. First operand has 271 places, 200 transitions, 1695 flow. Second operand 12 states and 138 transitions. [2024-06-14 12:51:51,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 221 transitions, 2201 flow [2024-06-14 12:51:52,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 221 transitions, 2113 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:51:52,060 INFO L231 Difference]: Finished difference. Result has 269 places, 195 transitions, 1645 flow [2024-06-14 12:51:52,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1607, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1645, PETRI_PLACES=269, PETRI_TRANSITIONS=195} [2024-06-14 12:51:52,061 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-14 12:51:52,061 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 195 transitions, 1645 flow [2024-06-14 12:51:52,061 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) [2024-06-14 12:51:52,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:52,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:52,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-14 12:51:52,061 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:52,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:52,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1689315779, now seen corresponding path program 26 times [2024-06-14 12:51:52,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:52,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980198552] [2024-06-14 12:51:52,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:52,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:53,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:53,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980198552] [2024-06-14 12:51:53,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980198552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:53,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:53,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:53,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296830750] [2024-06-14 12:51:53,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:53,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:53,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:53,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:53,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:53,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:53,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 195 transitions, 1645 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) [2024-06-14 12:51:53,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:53,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:53,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:54,602 INFO L124 PetriNetUnfolderBase]: 575/1105 cut-off events. [2024-06-14 12:51:54,602 INFO L125 PetriNetUnfolderBase]: For 169824/169824 co-relation queries the response was YES. [2024-06-14 12:51:54,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7269 conditions, 1105 events. 575/1105 cut-off events. For 169824/169824 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5990 event pairs, 104 based on Foata normal form. 8/1112 useless extension candidates. Maximal degree in co-relation 7145. Up to 736 conditions per place. [2024-06-14 12:51:54,612 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 78 changer transitions 7/223 dead transitions. [2024-06-14 12:51:54,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 223 transitions, 2381 flow [2024-06-14 12:51:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 12:51:54,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-14 12:51:54,613 INFO L175 Difference]: Start difference. First operand has 269 places, 195 transitions, 1645 flow. Second operand 12 states and 146 transitions. [2024-06-14 12:51:54,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 223 transitions, 2381 flow [2024-06-14 12:51:55,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 223 transitions, 2279 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-14 12:51:55,055 INFO L231 Difference]: Finished difference. Result has 260 places, 195 transitions, 1710 flow [2024-06-14 12:51:55,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1710, PETRI_PLACES=260, PETRI_TRANSITIONS=195} [2024-06-14 12:51:55,055 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-14 12:51:55,055 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 195 transitions, 1710 flow [2024-06-14 12:51:55,055 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) [2024-06-14 12:51:55,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:55,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:55,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-14 12:51:55,056 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:55,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:55,056 INFO L85 PathProgramCache]: Analyzing trace with hash -414469499, now seen corresponding path program 27 times [2024-06-14 12:51:55,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:55,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397783752] [2024-06-14 12:51:55,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:55,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:56,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:56,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397783752] [2024-06-14 12:51:56,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397783752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:56,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:56,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:56,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799916286] [2024-06-14 12:51:56,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:56,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:56,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:56,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:56,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:56,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:51:56,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 195 transitions, 1710 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) [2024-06-14 12:51:56,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:56,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:51:56,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:57,454 INFO L124 PetriNetUnfolderBase]: 544/1044 cut-off events. [2024-06-14 12:51:57,455 INFO L125 PetriNetUnfolderBase]: For 129077/129077 co-relation queries the response was YES. [2024-06-14 12:51:57,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6219 conditions, 1044 events. 544/1044 cut-off events. For 129077/129077 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5591 event pairs, 95 based on Foata normal form. 10/1053 useless extension candidates. Maximal degree in co-relation 6099. Up to 736 conditions per place. [2024-06-14 12:51:57,468 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 75 changer transitions 13/216 dead transitions. [2024-06-14 12:51:57,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 216 transitions, 2214 flow [2024-06-14 12:51:57,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-14 12:51:57,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 12:51:57,469 INFO L175 Difference]: Start difference. First operand has 260 places, 195 transitions, 1710 flow. Second operand 12 states and 140 transitions. [2024-06-14 12:51:57,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 216 transitions, 2214 flow [2024-06-14 12:51:57,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 216 transitions, 2089 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 12:51:57,737 INFO L231 Difference]: Finished difference. Result has 261 places, 191 transitions, 1709 flow [2024-06-14 12:51:57,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1709, PETRI_PLACES=261, PETRI_TRANSITIONS=191} [2024-06-14 12:51:57,738 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-14 12:51:57,738 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 191 transitions, 1709 flow [2024-06-14 12:51:57,738 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) [2024-06-14 12:51:57,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:57,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:51:57,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-14 12:51:57,738 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:51:57,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:57,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1918137821, now seen corresponding path program 28 times [2024-06-14 12:51:57,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:57,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926586193] [2024-06-14 12:51:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:57,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:59,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:59,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:59,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926586193] [2024-06-14 12:51:59,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926586193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:59,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:59,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:59,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541922355] [2024-06-14 12:51:59,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:59,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:59,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:59,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:59,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:00,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:00,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 191 transitions, 1709 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) [2024-06-14 12:52:00,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:00,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:00,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:00,769 INFO L124 PetriNetUnfolderBase]: 567/1093 cut-off events. [2024-06-14 12:52:00,769 INFO L125 PetriNetUnfolderBase]: For 162857/162857 co-relation queries the response was YES. [2024-06-14 12:52:00,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7458 conditions, 1093 events. 567/1093 cut-off events. For 162857/162857 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5893 event pairs, 97 based on Foata normal form. 8/1100 useless extension candidates. Maximal degree in co-relation 7339. Up to 564 conditions per place. [2024-06-14 12:52:00,778 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 73 changer transitions 11/218 dead transitions. [2024-06-14 12:52:00,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 218 transitions, 2441 flow [2024-06-14 12:52:00,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:00,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 12:52:00,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-14 12:52:00,779 INFO L175 Difference]: Start difference. First operand has 261 places, 191 transitions, 1709 flow. Second operand 12 states and 145 transitions. [2024-06-14 12:52:00,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 218 transitions, 2441 flow [2024-06-14 12:52:01,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 218 transitions, 2287 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:52:01,164 INFO L231 Difference]: Finished difference. Result has 258 places, 187 transitions, 1676 flow [2024-06-14 12:52:01,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1676, PETRI_PLACES=258, PETRI_TRANSITIONS=187} [2024-06-14 12:52:01,165 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-14 12:52:01,165 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 187 transitions, 1676 flow [2024-06-14 12:52:01,165 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) [2024-06-14 12:52:01,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:01,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:01,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-14 12:52:01,165 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:01,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:01,165 INFO L85 PathProgramCache]: Analyzing trace with hash -23494333, now seen corresponding path program 13 times [2024-06-14 12:52:01,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:01,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308312673] [2024-06-14 12:52:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:01,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:02,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:02,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308312673] [2024-06-14 12:52:02,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308312673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:02,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:02,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:02,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272405138] [2024-06-14 12:52:02,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:02,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:02,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:02,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:02,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:02,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:02,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 187 transitions, 1676 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) [2024-06-14 12:52:02,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:02,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:02,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:03,328 INFO L124 PetriNetUnfolderBase]: 548/1052 cut-off events. [2024-06-14 12:52:03,328 INFO L125 PetriNetUnfolderBase]: For 141627/141627 co-relation queries the response was YES. [2024-06-14 12:52:03,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7364 conditions, 1052 events. 548/1052 cut-off events. For 141627/141627 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5601 event pairs, 125 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 7245. Up to 950 conditions per place. [2024-06-14 12:52:03,337 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 34 changer transitions 0/204 dead transitions. [2024-06-14 12:52:03,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 204 transitions, 2152 flow [2024-06-14 12:52:03,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:03,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:52:03,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 12:52:03,338 INFO L175 Difference]: Start difference. First operand has 258 places, 187 transitions, 1676 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:52:03,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 204 transitions, 2152 flow [2024-06-14 12:52:03,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 204 transitions, 1977 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-06-14 12:52:03,660 INFO L231 Difference]: Finished difference. Result has 250 places, 188 transitions, 1603 flow [2024-06-14 12:52:03,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1603, PETRI_PLACES=250, PETRI_TRANSITIONS=188} [2024-06-14 12:52:03,660 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-14 12:52:03,660 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 188 transitions, 1603 flow [2024-06-14 12:52:03,661 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) [2024-06-14 12:52:03,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:03,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:03,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-14 12:52:03,661 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:03,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:03,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1913369277, now seen corresponding path program 14 times [2024-06-14 12:52:03,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:03,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493041912] [2024-06-14 12:52:03,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:03,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:05,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:05,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:05,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493041912] [2024-06-14 12:52:05,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493041912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:05,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:05,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:05,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374671551] [2024-06-14 12:52:05,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:05,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:05,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:05,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:05,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:05,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:05,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 188 transitions, 1603 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) [2024-06-14 12:52:05,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:05,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:05,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:06,144 INFO L124 PetriNetUnfolderBase]: 552/1060 cut-off events. [2024-06-14 12:52:06,145 INFO L125 PetriNetUnfolderBase]: For 134552/134552 co-relation queries the response was YES. [2024-06-14 12:52:06,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7304 conditions, 1060 events. 552/1060 cut-off events. For 134552/134552 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5700 event pairs, 111 based on Foata normal form. 2/1061 useless extension candidates. Maximal degree in co-relation 7187. Up to 900 conditions per place. [2024-06-14 12:52:06,155 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 152 selfloop transitions, 50 changer transitions 0/204 dead transitions. [2024-06-14 12:52:06,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 204 transitions, 2077 flow [2024-06-14 12:52:06,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:06,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:06,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 12:52:06,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 12:52:06,156 INFO L175 Difference]: Start difference. First operand has 250 places, 188 transitions, 1603 flow. Second operand 11 states and 126 transitions. [2024-06-14 12:52:06,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 204 transitions, 2077 flow [2024-06-14 12:52:06,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 204 transitions, 1985 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:52:06,510 INFO L231 Difference]: Finished difference. Result has 252 places, 189 transitions, 1647 flow [2024-06-14 12:52:06,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1647, PETRI_PLACES=252, PETRI_TRANSITIONS=189} [2024-06-14 12:52:06,510 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-14 12:52:06,510 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 189 transitions, 1647 flow [2024-06-14 12:52:06,510 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) [2024-06-14 12:52:06,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:06,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:06,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-14 12:52:06,511 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:06,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:06,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1925350841, now seen corresponding path program 15 times [2024-06-14 12:52:06,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:06,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305583959] [2024-06-14 12:52:06,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:06,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:07,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:07,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305583959] [2024-06-14 12:52:07,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305583959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:07,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:07,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:07,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103393771] [2024-06-14 12:52:07,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:07,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:07,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:07,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:07,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:08,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:08,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 189 transitions, 1647 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) [2024-06-14 12:52:08,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:08,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:08,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:08,441 INFO L124 PetriNetUnfolderBase]: 564/1088 cut-off events. [2024-06-14 12:52:08,441 INFO L125 PetriNetUnfolderBase]: For 159629/159629 co-relation queries the response was YES. [2024-06-14 12:52:08,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7481 conditions, 1088 events. 564/1088 cut-off events. For 159629/159629 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5857 event pairs, 131 based on Foata normal form. 8/1095 useless extension candidates. Maximal degree in co-relation 7363. Up to 977 conditions per place. [2024-06-14 12:52:08,451 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 181 selfloop transitions, 14 changer transitions 13/210 dead transitions. [2024-06-14 12:52:08,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 210 transitions, 2182 flow [2024-06-14 12:52:08,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:08,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:08,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 12:52:08,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 12:52:08,452 INFO L175 Difference]: Start difference. First operand has 252 places, 189 transitions, 1647 flow. Second operand 11 states and 123 transitions. [2024-06-14 12:52:08,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 210 transitions, 2182 flow [2024-06-14 12:52:08,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 210 transitions, 2054 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 12:52:08,784 INFO L231 Difference]: Finished difference. Result has 255 places, 187 transitions, 1533 flow [2024-06-14 12:52:08,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1533, PETRI_PLACES=255, PETRI_TRANSITIONS=187} [2024-06-14 12:52:08,784 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-14 12:52:08,784 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 187 transitions, 1533 flow [2024-06-14 12:52:08,785 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) [2024-06-14 12:52:08,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:08,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:08,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-14 12:52:08,785 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:08,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1325717511, now seen corresponding path program 16 times [2024-06-14 12:52:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:08,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111887170] [2024-06-14 12:52:08,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:11,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:11,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111887170] [2024-06-14 12:52:11,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111887170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:11,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:11,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:11,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618465964] [2024-06-14 12:52:11,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:11,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:11,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:11,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:11,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:11,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:11,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 187 transitions, 1533 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) [2024-06-14 12:52:11,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:11,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:11,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:11,934 INFO L124 PetriNetUnfolderBase]: 530/1018 cut-off events. [2024-06-14 12:52:11,935 INFO L125 PetriNetUnfolderBase]: For 141555/141555 co-relation queries the response was YES. [2024-06-14 12:52:11,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7107 conditions, 1018 events. 530/1018 cut-off events. For 141555/141555 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5409 event pairs, 103 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 6987. Up to 866 conditions per place. [2024-06-14 12:52:11,943 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 156 selfloop transitions, 45 changer transitions 0/203 dead transitions. [2024-06-14 12:52:11,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 203 transitions, 2007 flow [2024-06-14 12:52:11,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:52:11,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:52:11,944 INFO L175 Difference]: Start difference. First operand has 255 places, 187 transitions, 1533 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:52:11,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 203 transitions, 2007 flow [2024-06-14 12:52:12,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 203 transitions, 1973 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:52:12,249 INFO L231 Difference]: Finished difference. Result has 254 places, 188 transitions, 1627 flow [2024-06-14 12:52:12,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1627, PETRI_PLACES=254, PETRI_TRANSITIONS=188} [2024-06-14 12:52:12,249 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 12:52:12,249 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 188 transitions, 1627 flow [2024-06-14 12:52:12,249 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) [2024-06-14 12:52:12,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:12,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:12,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-14 12:52:12,249 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:12,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:12,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1152817057, now seen corresponding path program 29 times [2024-06-14 12:52:12,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:12,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367192715] [2024-06-14 12:52:12,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:12,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:13,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:13,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367192715] [2024-06-14 12:52:13,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367192715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:13,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:13,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:52:13,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27730302] [2024-06-14 12:52:13,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:13,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:52:13,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:13,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:52:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:52:13,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:13,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 188 transitions, 1627 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) [2024-06-14 12:52:13,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:13,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:13,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:14,161 INFO L124 PetriNetUnfolderBase]: 546/1054 cut-off events. [2024-06-14 12:52:14,161 INFO L125 PetriNetUnfolderBase]: For 170939/170939 co-relation queries the response was YES. [2024-06-14 12:52:14,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7314 conditions, 1054 events. 546/1054 cut-off events. For 170939/170939 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5649 event pairs, 107 based on Foata normal form. 10/1063 useless extension candidates. Maximal degree in co-relation 7195. Up to 768 conditions per place. [2024-06-14 12:52:14,169 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 62 changer transitions 7/208 dead transitions. [2024-06-14 12:52:14,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 208 transitions, 2113 flow [2024-06-14 12:52:14,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:14,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:52:14,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:52:14,170 INFO L175 Difference]: Start difference. First operand has 254 places, 188 transitions, 1627 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:52:14,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 208 transitions, 2113 flow [2024-06-14 12:52:14,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 208 transitions, 1962 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-14 12:52:14,517 INFO L231 Difference]: Finished difference. Result has 255 places, 185 transitions, 1586 flow [2024-06-14 12:52:14,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1586, PETRI_PLACES=255, PETRI_TRANSITIONS=185} [2024-06-14 12:52:14,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-14 12:52:14,518 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 185 transitions, 1586 flow [2024-06-14 12:52:14,518 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) [2024-06-14 12:52:14,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:14,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:14,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-14 12:52:14,519 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:14,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:14,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1252087001, now seen corresponding path program 17 times [2024-06-14 12:52:14,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:14,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283871668] [2024-06-14 12:52:14,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:14,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:16,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:16,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283871668] [2024-06-14 12:52:16,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283871668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:16,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:16,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:16,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312380564] [2024-06-14 12:52:16,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:16,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:16,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:16,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:16,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:16,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:16,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 185 transitions, 1586 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) [2024-06-14 12:52:16,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:16,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:16,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:16,828 INFO L124 PetriNetUnfolderBase]: 562/1086 cut-off events. [2024-06-14 12:52:16,828 INFO L125 PetriNetUnfolderBase]: For 190235/190235 co-relation queries the response was YES. [2024-06-14 12:52:16,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8560 conditions, 1086 events. 562/1086 cut-off events. For 190235/190235 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5878 event pairs, 129 based on Foata normal form. 2/1087 useless extension candidates. Maximal degree in co-relation 8441. Up to 896 conditions per place. [2024-06-14 12:52:16,838 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 170 selfloop transitions, 36 changer transitions 0/208 dead transitions. [2024-06-14 12:52:16,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 208 transitions, 2312 flow [2024-06-14 12:52:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:52:16,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:52:16,839 INFO L175 Difference]: Start difference. First operand has 255 places, 185 transitions, 1586 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:52:16,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 208 transitions, 2312 flow [2024-06-14 12:52:17,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 208 transitions, 2179 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:52:17,242 INFO L231 Difference]: Finished difference. Result has 254 places, 187 transitions, 1601 flow [2024-06-14 12:52:17,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1601, PETRI_PLACES=254, PETRI_TRANSITIONS=187} [2024-06-14 12:52:17,242 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 12:52:17,242 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 187 transitions, 1601 flow [2024-06-14 12:52:17,242 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) [2024-06-14 12:52:17,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:17,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:17,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-14 12:52:17,243 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:17,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:17,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2133441095, now seen corresponding path program 18 times [2024-06-14 12:52:17,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:17,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175430822] [2024-06-14 12:52:17,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:17,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:18,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:18,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175430822] [2024-06-14 12:52:18,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175430822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:18,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:18,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:18,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076608308] [2024-06-14 12:52:18,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:18,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:18,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:18,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:18,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:18,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:18,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 187 transitions, 1601 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) [2024-06-14 12:52:18,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:18,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:18,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:19,229 INFO L124 PetriNetUnfolderBase]: 582/1130 cut-off events. [2024-06-14 12:52:19,229 INFO L125 PetriNetUnfolderBase]: For 228338/228338 co-relation queries the response was YES. [2024-06-14 12:52:19,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8704 conditions, 1130 events. 582/1130 cut-off events. For 228338/228338 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6186 event pairs, 139 based on Foata normal form. 12/1141 useless extension candidates. Maximal degree in co-relation 8585. Up to 998 conditions per place. [2024-06-14 12:52:19,239 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 26 changer transitions 7/207 dead transitions. [2024-06-14 12:52:19,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 207 transitions, 2115 flow [2024-06-14 12:52:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 12:52:19,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 12:52:19,240 INFO L175 Difference]: Start difference. First operand has 254 places, 187 transitions, 1601 flow. Second operand 11 states and 128 transitions. [2024-06-14 12:52:19,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 207 transitions, 2115 flow [2024-06-14 12:52:19,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 207 transitions, 2029 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 12:52:19,696 INFO L231 Difference]: Finished difference. Result has 258 places, 185 transitions, 1589 flow [2024-06-14 12:52:19,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1589, PETRI_PLACES=258, PETRI_TRANSITIONS=185} [2024-06-14 12:52:19,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-14 12:52:19,696 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 185 transitions, 1589 flow [2024-06-14 12:52:19,697 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) [2024-06-14 12:52:19,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:19,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:19,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-14 12:52:19,697 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:19,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:19,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1446473027, now seen corresponding path program 19 times [2024-06-14 12:52:19,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:19,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196500421] [2024-06-14 12:52:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:19,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:20,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:20,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196500421] [2024-06-14 12:52:20,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196500421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:20,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:20,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:20,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120891269] [2024-06-14 12:52:20,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:20,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:20,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:20,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:20,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:21,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:21,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 185 transitions, 1589 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) [2024-06-14 12:52:21,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:21,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:21,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:21,503 INFO L124 PetriNetUnfolderBase]: 562/1090 cut-off events. [2024-06-14 12:52:21,503 INFO L125 PetriNetUnfolderBase]: For 195185/195185 co-relation queries the response was YES. [2024-06-14 12:52:21,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8637 conditions, 1090 events. 562/1090 cut-off events. For 195185/195185 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5901 event pairs, 141 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 8516. Up to 1038 conditions per place. [2024-06-14 12:52:21,513 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 16 changer transitions 0/200 dead transitions. [2024-06-14 12:52:21,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 200 transitions, 2053 flow [2024-06-14 12:52:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 12:52:21,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-14 12:52:21,514 INFO L175 Difference]: Start difference. First operand has 258 places, 185 transitions, 1589 flow. Second operand 11 states and 115 transitions. [2024-06-14 12:52:21,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 200 transitions, 2053 flow [2024-06-14 12:52:21,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 200 transitions, 1966 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-14 12:52:21,983 INFO L231 Difference]: Finished difference. Result has 259 places, 186 transitions, 1578 flow [2024-06-14 12:52:21,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1578, PETRI_PLACES=259, PETRI_TRANSITIONS=186} [2024-06-14 12:52:21,983 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-14 12:52:21,983 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 186 transitions, 1578 flow [2024-06-14 12:52:21,983 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) [2024-06-14 12:52:21,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:21,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:21,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-14 12:52:21,984 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:21,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:21,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1473567269, now seen corresponding path program 20 times [2024-06-14 12:52:21,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:21,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554067645] [2024-06-14 12:52:21,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:21,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:23,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:23,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554067645] [2024-06-14 12:52:23,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554067645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:23,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:23,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:23,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725520090] [2024-06-14 12:52:23,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:23,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:23,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:23,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:23,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:23,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:23,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 186 transitions, 1578 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) [2024-06-14 12:52:23,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:23,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:23,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:24,268 INFO L124 PetriNetUnfolderBase]: 559/1085 cut-off events. [2024-06-14 12:52:24,268 INFO L125 PetriNetUnfolderBase]: For 191263/191263 co-relation queries the response was YES. [2024-06-14 12:52:24,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8398 conditions, 1085 events. 559/1085 cut-off events. For 191263/191263 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5909 event pairs, 136 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 8276. Up to 1008 conditions per place. [2024-06-14 12:52:24,278 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 173 selfloop transitions, 27 changer transitions 0/202 dead transitions. [2024-06-14 12:52:24,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 202 transitions, 2022 flow [2024-06-14 12:52:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:24,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 12:52:24,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 12:52:24,279 INFO L175 Difference]: Start difference. First operand has 259 places, 186 transitions, 1578 flow. Second operand 11 states and 126 transitions. [2024-06-14 12:52:24,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 202 transitions, 2022 flow [2024-06-14 12:52:24,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 202 transitions, 1956 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 12:52:24,716 INFO L231 Difference]: Finished difference. Result has 261 places, 186 transitions, 1570 flow [2024-06-14 12:52:24,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1570, PETRI_PLACES=261, PETRI_TRANSITIONS=186} [2024-06-14 12:52:24,717 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-14 12:52:24,717 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 186 transitions, 1570 flow [2024-06-14 12:52:24,717 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) [2024-06-14 12:52:24,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:24,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:24,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-14 12:52:24,717 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:24,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:24,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1479816435, now seen corresponding path program 30 times [2024-06-14 12:52:24,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:24,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292783606] [2024-06-14 12:52:24,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:24,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:26,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:26,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:26,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292783606] [2024-06-14 12:52:26,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292783606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:26,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:26,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:26,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696691751] [2024-06-14 12:52:26,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:26,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:26,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:26,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:26,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:26,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:26,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 186 transitions, 1570 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) [2024-06-14 12:52:26,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:26,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:26,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:27,683 INFO L124 PetriNetUnfolderBase]: 575/1121 cut-off events. [2024-06-14 12:52:27,683 INFO L125 PetriNetUnfolderBase]: For 226815/226815 co-relation queries the response was YES. [2024-06-14 12:52:27,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8519 conditions, 1121 events. 575/1121 cut-off events. For 226815/226815 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6179 event pairs, 140 based on Foata normal form. 10/1130 useless extension candidates. Maximal degree in co-relation 8396. Up to 990 conditions per place. [2024-06-14 12:52:27,693 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 167 selfloop transitions, 23 changer transitions 16/208 dead transitions. [2024-06-14 12:52:27,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 208 transitions, 2060 flow [2024-06-14 12:52:27,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:27,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 12:52:27,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 12:52:27,694 INFO L175 Difference]: Start difference. First operand has 261 places, 186 transitions, 1570 flow. Second operand 12 states and 141 transitions. [2024-06-14 12:52:27,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 208 transitions, 2060 flow [2024-06-14 12:52:28,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 208 transitions, 1978 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-14 12:52:28,168 INFO L231 Difference]: Finished difference. Result has 263 places, 180 transitions, 1493 flow [2024-06-14 12:52:28,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1493, PETRI_PLACES=263, PETRI_TRANSITIONS=180} [2024-06-14 12:52:28,168 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-14 12:52:28,169 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 180 transitions, 1493 flow [2024-06-14 12:52:28,169 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) [2024-06-14 12:52:28,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:28,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:28,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-14 12:52:28,169 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:28,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:28,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1473560325, now seen corresponding path program 31 times [2024-06-14 12:52:28,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:28,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341763537] [2024-06-14 12:52:28,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:28,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:30,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:30,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341763537] [2024-06-14 12:52:30,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341763537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:30,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:30,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:30,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10450485] [2024-06-14 12:52:30,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:30,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:30,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:30,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:30,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:30,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:30,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 180 transitions, 1493 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) [2024-06-14 12:52:30,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:30,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:30,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:31,139 INFO L124 PetriNetUnfolderBase]: 555/1089 cut-off events. [2024-06-14 12:52:31,139 INFO L125 PetriNetUnfolderBase]: For 231400/231400 co-relation queries the response was YES. [2024-06-14 12:52:31,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8364 conditions, 1089 events. 555/1089 cut-off events. For 231400/231400 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5978 event pairs, 142 based on Foata normal form. 10/1098 useless extension candidates. Maximal degree in co-relation 8240. Up to 976 conditions per place. [2024-06-14 12:52:31,149 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 166 selfloop transitions, 22 changer transitions 11/201 dead transitions. [2024-06-14 12:52:31,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 201 transitions, 1965 flow [2024-06-14 12:52:31,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:31,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-14 12:52:31,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-14 12:52:31,150 INFO L175 Difference]: Start difference. First operand has 263 places, 180 transitions, 1493 flow. Second operand 12 states and 137 transitions. [2024-06-14 12:52:31,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 201 transitions, 1965 flow [2024-06-14 12:52:31,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 201 transitions, 1909 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:52:31,618 INFO L231 Difference]: Finished difference. Result has 257 places, 177 transitions, 1458 flow [2024-06-14 12:52:31,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1458, PETRI_PLACES=257, PETRI_TRANSITIONS=177} [2024-06-14 12:52:31,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-14 12:52:31,619 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 177 transitions, 1458 flow [2024-06-14 12:52:31,619 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) [2024-06-14 12:52:31,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:31,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:31,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-14 12:52:31,619 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:31,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1473382695, now seen corresponding path program 32 times [2024-06-14 12:52:31,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:31,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146134191] [2024-06-14 12:52:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:31,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:33,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:33,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146134191] [2024-06-14 12:52:33,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146134191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:33,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:33,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:33,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529280496] [2024-06-14 12:52:33,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:33,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:33,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:33,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:33,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:33,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:33,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 177 transitions, 1458 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) [2024-06-14 12:52:33,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:33,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:33,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:33,792 INFO L124 PetriNetUnfolderBase]: 541/1067 cut-off events. [2024-06-14 12:52:33,792 INFO L125 PetriNetUnfolderBase]: For 208628/208628 co-relation queries the response was YES. [2024-06-14 12:52:33,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8109 conditions, 1067 events. 541/1067 cut-off events. For 208628/208628 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5837 event pairs, 130 based on Foata normal form. 8/1074 useless extension candidates. Maximal degree in co-relation 7988. Up to 892 conditions per place. [2024-06-14 12:52:33,801 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 23 changer transitions 7/203 dead transitions. [2024-06-14 12:52:33,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 203 transitions, 2134 flow [2024-06-14 12:52:33,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:33,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:33,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 12:52:33,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-14 12:52:33,802 INFO L175 Difference]: Start difference. First operand has 257 places, 177 transitions, 1458 flow. Second operand 12 states and 143 transitions. [2024-06-14 12:52:33,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 203 transitions, 2134 flow [2024-06-14 12:52:34,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 203 transitions, 2082 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:52:34,216 INFO L231 Difference]: Finished difference. Result has 255 places, 175 transitions, 1444 flow [2024-06-14 12:52:34,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1444, PETRI_PLACES=255, PETRI_TRANSITIONS=175} [2024-06-14 12:52:34,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-14 12:52:34,217 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 175 transitions, 1444 flow [2024-06-14 12:52:34,217 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) [2024-06-14 12:52:34,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:34,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:34,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-14 12:52:34,217 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:34,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:34,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1933386041, now seen corresponding path program 21 times [2024-06-14 12:52:34,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:34,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747545693] [2024-06-14 12:52:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:34,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:35,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:35,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:35,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747545693] [2024-06-14 12:52:35,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747545693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:35,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:35,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:52:35,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696488014] [2024-06-14 12:52:35,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:35,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:52:35,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:35,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:52:35,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:52:35,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:35,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 175 transitions, 1444 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) [2024-06-14 12:52:35,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:35,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:35,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:36,179 INFO L124 PetriNetUnfolderBase]: 527/1037 cut-off events. [2024-06-14 12:52:36,179 INFO L125 PetriNetUnfolderBase]: For 182368/182368 co-relation queries the response was YES. [2024-06-14 12:52:36,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8036 conditions, 1037 events. 527/1037 cut-off events. For 182368/182368 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5635 event pairs, 138 based on Foata normal form. 2/1038 useless extension candidates. Maximal degree in co-relation 7916. Up to 990 conditions per place. [2024-06-14 12:52:36,188 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 172 selfloop transitions, 16 changer transitions 0/190 dead transitions. [2024-06-14 12:52:36,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 190 transitions, 1892 flow [2024-06-14 12:52:36,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 12:52:36,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-14 12:52:36,190 INFO L175 Difference]: Start difference. First operand has 255 places, 175 transitions, 1444 flow. Second operand 11 states and 116 transitions. [2024-06-14 12:52:36,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 190 transitions, 1892 flow [2024-06-14 12:52:36,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 190 transitions, 1847 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:52:36,594 INFO L231 Difference]: Finished difference. Result has 254 places, 176 transitions, 1475 flow [2024-06-14 12:52:36,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1475, PETRI_PLACES=254, PETRI_TRANSITIONS=176} [2024-06-14 12:52:36,594 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 12:52:36,594 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 176 transitions, 1475 flow [2024-06-14 12:52:36,595 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) [2024-06-14 12:52:36,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:36,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:36,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-14 12:52:36,595 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:36,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:36,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2139927845, now seen corresponding path program 22 times [2024-06-14 12:52:36,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:36,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235141804] [2024-06-14 12:52:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:36,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:38,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:38,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235141804] [2024-06-14 12:52:38,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235141804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:38,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:38,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:38,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778185657] [2024-06-14 12:52:38,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:38,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:38,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:38,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:38,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:38,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:38,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 176 transitions, 1475 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) [2024-06-14 12:52:38,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:38,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:38,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:38,660 INFO L124 PetriNetUnfolderBase]: 531/1045 cut-off events. [2024-06-14 12:52:38,660 INFO L125 PetriNetUnfolderBase]: For 179545/179545 co-relation queries the response was YES. [2024-06-14 12:52:38,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8091 conditions, 1045 events. 531/1045 cut-off events. For 179545/179545 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5686 event pairs, 136 based on Foata normal form. 2/1046 useless extension candidates. Maximal degree in co-relation 7972. Up to 961 conditions per place. [2024-06-14 12:52:38,669 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 163 selfloop transitions, 27 changer transitions 0/192 dead transitions. [2024-06-14 12:52:38,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 192 transitions, 1935 flow [2024-06-14 12:52:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:38,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 12:52:38,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 12:52:38,670 INFO L175 Difference]: Start difference. First operand has 254 places, 176 transitions, 1475 flow. Second operand 11 states and 124 transitions. [2024-06-14 12:52:38,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 192 transitions, 1935 flow [2024-06-14 12:52:39,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 192 transitions, 1869 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 12:52:39,071 INFO L231 Difference]: Finished difference. Result has 256 places, 177 transitions, 1509 flow [2024-06-14 12:52:39,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1509, PETRI_PLACES=256, PETRI_TRANSITIONS=177} [2024-06-14 12:52:39,071 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-14 12:52:39,071 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 177 transitions, 1509 flow [2024-06-14 12:52:39,071 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) [2024-06-14 12:52:39,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:39,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:39,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-14 12:52:39,072 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:39,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:39,072 INFO L85 PathProgramCache]: Analyzing trace with hash -30161007, now seen corresponding path program 33 times [2024-06-14 12:52:39,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:39,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973233017] [2024-06-14 12:52:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:39,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:40,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:40,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973233017] [2024-06-14 12:52:40,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973233017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:40,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:40,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:40,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128580768] [2024-06-14 12:52:40,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:40,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:40,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:40,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:40,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:40,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:40,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 177 transitions, 1509 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) [2024-06-14 12:52:40,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:40,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:40,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:41,187 INFO L124 PetriNetUnfolderBase]: 518/1022 cut-off events. [2024-06-14 12:52:41,187 INFO L125 PetriNetUnfolderBase]: For 175735/175735 co-relation queries the response was YES. [2024-06-14 12:52:41,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7180 conditions, 1022 events. 518/1022 cut-off events. For 175735/175735 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5555 event pairs, 125 based on Foata normal form. 10/1031 useless extension candidates. Maximal degree in co-relation 7060. Up to 908 conditions per place. [2024-06-14 12:52:41,196 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 163 selfloop transitions, 20 changer transitions 13/198 dead transitions. [2024-06-14 12:52:41,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 198 transitions, 1975 flow [2024-06-14 12:52:41,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:41,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-14 12:52:41,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-14 12:52:41,197 INFO L175 Difference]: Start difference. First operand has 256 places, 177 transitions, 1509 flow. Second operand 12 states and 137 transitions. [2024-06-14 12:52:41,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 198 transitions, 1975 flow [2024-06-14 12:52:41,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 198 transitions, 1885 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 12:52:41,562 INFO L231 Difference]: Finished difference. Result has 259 places, 173 transitions, 1427 flow [2024-06-14 12:52:41,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1427, PETRI_PLACES=259, PETRI_TRANSITIONS=173} [2024-06-14 12:52:41,563 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-14 12:52:41,563 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 173 transitions, 1427 flow [2024-06-14 12:52:41,563 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) [2024-06-14 12:52:41,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:41,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:41,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-14 12:52:41,563 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:41,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:41,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1709750999, now seen corresponding path program 23 times [2024-06-14 12:52:41,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:41,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005580893] [2024-06-14 12:52:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:41,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:43,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:43,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005580893] [2024-06-14 12:52:43,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005580893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:43,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:43,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:43,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534992008] [2024-06-14 12:52:43,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:43,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:43,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:43,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:43,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:43,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 173 transitions, 1427 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) [2024-06-14 12:52:43,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:43,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:43,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:43,693 INFO L124 PetriNetUnfolderBase]: 497/979 cut-off events. [2024-06-14 12:52:43,693 INFO L125 PetriNetUnfolderBase]: For 148843/148843 co-relation queries the response was YES. [2024-06-14 12:52:43,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7031 conditions, 979 events. 497/979 cut-off events. For 148843/148843 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5263 event pairs, 119 based on Foata normal form. 2/980 useless extension candidates. Maximal degree in co-relation 6910. Up to 920 conditions per place. [2024-06-14 12:52:43,701 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 20 changer transitions 0/189 dead transitions. [2024-06-14 12:52:43,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 189 transitions, 1881 flow [2024-06-14 12:52:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 12:52:43,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 12:52:43,702 INFO L175 Difference]: Start difference. First operand has 259 places, 173 transitions, 1427 flow. Second operand 11 states and 120 transitions. [2024-06-14 12:52:43,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 189 transitions, 1881 flow [2024-06-14 12:52:44,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 189 transitions, 1837 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 12:52:44,046 INFO L231 Difference]: Finished difference. Result has 254 places, 174 transitions, 1471 flow [2024-06-14 12:52:44,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1471, PETRI_PLACES=254, PETRI_TRANSITIONS=174} [2024-06-14 12:52:44,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 12:52:44,047 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 174 transitions, 1471 flow [2024-06-14 12:52:44,047 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) [2024-06-14 12:52:44,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:44,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:44,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-14 12:52:44,047 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:44,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:44,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1925054171, now seen corresponding path program 24 times [2024-06-14 12:52:44,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:44,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067925173] [2024-06-14 12:52:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:44,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:45,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:45,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067925173] [2024-06-14 12:52:45,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067925173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:45,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:45,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:45,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751917001] [2024-06-14 12:52:45,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:45,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:45,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:45,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:45,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:45,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:45,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 174 transitions, 1471 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) [2024-06-14 12:52:45,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:45,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:45,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:46,335 INFO L124 PetriNetUnfolderBase]: 501/987 cut-off events. [2024-06-14 12:52:46,336 INFO L125 PetriNetUnfolderBase]: For 149860/149860 co-relation queries the response was YES. [2024-06-14 12:52:46,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7149 conditions, 987 events. 501/987 cut-off events. For 149860/149860 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5336 event pairs, 119 based on Foata normal form. 2/988 useless extension candidates. Maximal degree in co-relation 7028. Up to 918 conditions per place. [2024-06-14 12:52:46,342 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 171 selfloop transitions, 18 changer transitions 0/191 dead transitions. [2024-06-14 12:52:46,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 191 transitions, 1931 flow [2024-06-14 12:52:46,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:46,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 12:52:46,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-14 12:52:46,343 INFO L175 Difference]: Start difference. First operand has 254 places, 174 transitions, 1471 flow. Second operand 12 states and 127 transitions. [2024-06-14 12:52:46,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 191 transitions, 1931 flow [2024-06-14 12:52:46,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 191 transitions, 1853 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 12:52:46,723 INFO L231 Difference]: Finished difference. Result has 257 places, 175 transitions, 1479 flow [2024-06-14 12:52:46,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1479, PETRI_PLACES=257, PETRI_TRANSITIONS=175} [2024-06-14 12:52:46,724 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-14 12:52:46,724 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 175 transitions, 1479 flow [2024-06-14 12:52:46,724 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) [2024-06-14 12:52:46,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:46,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:46,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-14 12:52:46,724 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:46,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:46,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1687541177, now seen corresponding path program 25 times [2024-06-14 12:52:46,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:46,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782815205] [2024-06-14 12:52:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:46,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:48,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:48,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782815205] [2024-06-14 12:52:48,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782815205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:48,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:48,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:48,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215503232] [2024-06-14 12:52:48,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:48,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:48,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:48,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:48,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:48,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:48,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 175 transitions, 1479 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) [2024-06-14 12:52:48,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:48,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:48,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:48,807 INFO L124 PetriNetUnfolderBase]: 507/1005 cut-off events. [2024-06-14 12:52:48,807 INFO L125 PetriNetUnfolderBase]: For 176303/176303 co-relation queries the response was YES. [2024-06-14 12:52:48,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6890 conditions, 1005 events. 507/1005 cut-off events. For 176303/176303 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5444 event pairs, 129 based on Foata normal form. 12/1016 useless extension candidates. Maximal degree in co-relation 6768. Up to 888 conditions per place. [2024-06-14 12:52:48,815 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 158 selfloop transitions, 18 changer transitions 16/194 dead transitions. [2024-06-14 12:52:48,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 194 transitions, 1973 flow [2024-06-14 12:52:48,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:48,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:48,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 12:52:48,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 12:52:48,816 INFO L175 Difference]: Start difference. First operand has 257 places, 175 transitions, 1479 flow. Second operand 11 states and 124 transitions. [2024-06-14 12:52:48,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 194 transitions, 1973 flow [2024-06-14 12:52:49,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 194 transitions, 1897 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-14 12:52:49,198 INFO L231 Difference]: Finished difference. Result has 258 places, 168 transitions, 1396 flow [2024-06-14 12:52:49,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1396, PETRI_PLACES=258, PETRI_TRANSITIONS=168} [2024-06-14 12:52:49,198 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-14 12:52:49,199 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 168 transitions, 1396 flow [2024-06-14 12:52:49,199 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) [2024-06-14 12:52:49,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:49,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:49,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-14 12:52:49,199 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:49,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:49,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1710039299, now seen corresponding path program 26 times [2024-06-14 12:52:49,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:49,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104497620] [2024-06-14 12:52:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:49,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:50,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:50,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:50,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104497620] [2024-06-14 12:52:50,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104497620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:50,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:50,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:50,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900325916] [2024-06-14 12:52:50,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:50,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:50,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:50,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:50,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:50,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:50,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 168 transitions, 1396 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) [2024-06-14 12:52:50,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:50,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:50,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:50,995 INFO L124 PetriNetUnfolderBase]: 470/938 cut-off events. [2024-06-14 12:52:50,995 INFO L125 PetriNetUnfolderBase]: For 139717/139717 co-relation queries the response was YES. [2024-06-14 12:52:51,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6607 conditions, 938 events. 470/938 cut-off events. For 139717/139717 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5038 event pairs, 117 based on Foata normal form. 2/939 useless extension candidates. Maximal degree in co-relation 6484. Up to 879 conditions per place. [2024-06-14 12:52:51,003 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 162 selfloop transitions, 20 changer transitions 0/184 dead transitions. [2024-06-14 12:52:51,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 184 transitions, 1842 flow [2024-06-14 12:52:51,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:51,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:51,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 12:52:51,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 12:52:51,004 INFO L175 Difference]: Start difference. First operand has 258 places, 168 transitions, 1396 flow. Second operand 11 states and 120 transitions. [2024-06-14 12:52:51,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 184 transitions, 1842 flow [2024-06-14 12:52:51,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 184 transitions, 1804 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:52:51,351 INFO L231 Difference]: Finished difference. Result has 256 places, 169 transitions, 1450 flow [2024-06-14 12:52:51,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1450, PETRI_PLACES=256, PETRI_TRANSITIONS=169} [2024-06-14 12:52:51,351 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-14 12:52:51,351 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 169 transitions, 1450 flow [2024-06-14 12:52:51,351 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) [2024-06-14 12:52:51,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:51,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:51,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-14 12:52:51,351 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:51,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:51,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1687532807, now seen corresponding path program 27 times [2024-06-14 12:52:51,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:51,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649311212] [2024-06-14 12:52:51,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:51,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:52,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:52,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649311212] [2024-06-14 12:52:52,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649311212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:52,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:52,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:52,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042888916] [2024-06-14 12:52:52,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:52,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:52,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:52,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:52,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:52,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:52,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 169 transitions, 1450 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) [2024-06-14 12:52:52,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:52,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:52,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:53,153 INFO L124 PetriNetUnfolderBase]: 482/966 cut-off events. [2024-06-14 12:52:53,153 INFO L125 PetriNetUnfolderBase]: For 162367/162367 co-relation queries the response was YES. [2024-06-14 12:52:53,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6795 conditions, 966 events. 482/966 cut-off events. For 162367/162367 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5257 event pairs, 123 based on Foata normal form. 8/973 useless extension candidates. Maximal degree in co-relation 6672. Up to 884 conditions per place. [2024-06-14 12:52:53,160 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 156 selfloop transitions, 14 changer transitions 14/186 dead transitions. [2024-06-14 12:52:53,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 186 transitions, 1910 flow [2024-06-14 12:52:53,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:53,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:53,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-14 12:52:53,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-14 12:52:53,160 INFO L175 Difference]: Start difference. First operand has 256 places, 169 transitions, 1450 flow. Second operand 11 states and 119 transitions. [2024-06-14 12:52:53,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 186 transitions, 1910 flow [2024-06-14 12:52:53,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 186 transitions, 1828 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 12:52:53,528 INFO L231 Difference]: Finished difference. Result has 258 places, 164 transitions, 1365 flow [2024-06-14 12:52:53,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1365, PETRI_PLACES=258, PETRI_TRANSITIONS=164} [2024-06-14 12:52:53,529 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-14 12:52:53,529 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 164 transitions, 1365 flow [2024-06-14 12:52:53,529 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) [2024-06-14 12:52:53,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:53,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:53,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-14 12:52:53,529 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:53,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:53,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2139936215, now seen corresponding path program 28 times [2024-06-14 12:52:53,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:53,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080069875] [2024-06-14 12:52:53,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:53,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:55,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080069875] [2024-06-14 12:52:55,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080069875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:55,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:55,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:55,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164927590] [2024-06-14 12:52:55,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:55,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:55,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:55,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:55,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:55,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:55,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 164 transitions, 1365 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) [2024-06-14 12:52:55,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:55,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:55,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:55,975 INFO L124 PetriNetUnfolderBase]: 461/923 cut-off events. [2024-06-14 12:52:55,976 INFO L125 PetriNetUnfolderBase]: For 143434/143434 co-relation queries the response was YES. [2024-06-14 12:52:55,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6590 conditions, 923 events. 461/923 cut-off events. For 143434/143434 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4940 event pairs, 119 based on Foata normal form. 2/924 useless extension candidates. Maximal degree in co-relation 6466. Up to 838 conditions per place. [2024-06-14 12:52:55,985 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 153 selfloop transitions, 25 changer transitions 0/180 dead transitions. [2024-06-14 12:52:55,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 180 transitions, 1807 flow [2024-06-14 12:52:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 12:52:55,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 12:52:55,986 INFO L175 Difference]: Start difference. First operand has 258 places, 164 transitions, 1365 flow. Second operand 11 states and 123 transitions. [2024-06-14 12:52:55,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 180 transitions, 1807 flow [2024-06-14 12:52:56,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 180 transitions, 1743 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:52:56,342 INFO L231 Difference]: Finished difference. Result has 252 places, 165 transitions, 1405 flow [2024-06-14 12:52:56,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1405, PETRI_PLACES=252, PETRI_TRANSITIONS=165} [2024-06-14 12:52:56,343 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-14 12:52:56,343 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 165 transitions, 1405 flow [2024-06-14 12:52:56,343 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) [2024-06-14 12:52:56,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:56,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:56,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-14 12:52:56,344 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:56,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:56,344 INFO L85 PathProgramCache]: Analyzing trace with hash -409827869, now seen corresponding path program 34 times [2024-06-14 12:52:56,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:56,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374549522] [2024-06-14 12:52:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:56,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:57,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:57,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374549522] [2024-06-14 12:52:57,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374549522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:57,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:57,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:52:57,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392865644] [2024-06-14 12:52:57,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:57,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:52:57,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:57,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:52:57,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:52:57,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:52:57,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 165 transitions, 1405 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) [2024-06-14 12:52:57,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:57,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:52:57,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:58,118 INFO L124 PetriNetUnfolderBase]: 477/959 cut-off events. [2024-06-14 12:52:58,118 INFO L125 PetriNetUnfolderBase]: For 168896/168896 co-relation queries the response was YES. [2024-06-14 12:52:58,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6645 conditions, 959 events. 477/959 cut-off events. For 168896/168896 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5201 event pairs, 117 based on Foata normal form. 10/968 useless extension candidates. Maximal degree in co-relation 6524. Up to 714 conditions per place. [2024-06-14 12:52:58,125 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 123 selfloop transitions, 45 changer transitions 14/184 dead transitions. [2024-06-14 12:52:58,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 184 transitions, 1835 flow [2024-06-14 12:52:58,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:58,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:52:58,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:52:58,126 INFO L175 Difference]: Start difference. First operand has 252 places, 165 transitions, 1405 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:52:58,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 184 transitions, 1835 flow [2024-06-14 12:52:58,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 184 transitions, 1741 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 12:52:58,446 INFO L231 Difference]: Finished difference. Result has 254 places, 159 transitions, 1361 flow [2024-06-14 12:52:58,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1361, PETRI_PLACES=254, PETRI_TRANSITIONS=159} [2024-06-14 12:52:58,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 12:52:58,447 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 159 transitions, 1361 flow [2024-06-14 12:52:58,447 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) [2024-06-14 12:52:58,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:58,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:52:58,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-14 12:52:58,448 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:52:58,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:58,448 INFO L85 PathProgramCache]: Analyzing trace with hash -237092025, now seen corresponding path program 29 times [2024-06-14 12:52:58,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:58,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845762144] [2024-06-14 12:52:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:58,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:00,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:00,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845762144] [2024-06-14 12:53:00,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845762144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:00,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:00,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:00,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685642993] [2024-06-14 12:53:00,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:00,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:00,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:00,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:00,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:00,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:00,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 159 transitions, 1361 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) [2024-06-14 12:53:00,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:00,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:00,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:01,301 INFO L124 PetriNetUnfolderBase]: 447/901 cut-off events. [2024-06-14 12:53:01,301 INFO L125 PetriNetUnfolderBase]: For 140475/140475 co-relation queries the response was YES. [2024-06-14 12:53:01,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6520 conditions, 901 events. 447/901 cut-off events. For 140475/140475 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4844 event pairs, 111 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 6398. Up to 740 conditions per place. [2024-06-14 12:53:01,308 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 135 selfloop transitions, 40 changer transitions 0/177 dead transitions. [2024-06-14 12:53:01,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 177 transitions, 2031 flow [2024-06-14 12:53:01,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:53:01,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:53:01,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 12:53:01,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 12:53:01,310 INFO L175 Difference]: Start difference. First operand has 254 places, 159 transitions, 1361 flow. Second operand 11 states and 128 transitions. [2024-06-14 12:53:01,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 177 transitions, 2031 flow [2024-06-14 12:53:01,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 177 transitions, 1919 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-14 12:53:01,633 INFO L231 Difference]: Finished difference. Result has 248 places, 161 transitions, 1443 flow [2024-06-14 12:53:01,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1443, PETRI_PLACES=248, PETRI_TRANSITIONS=161} [2024-06-14 12:53:01,633 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-14 12:53:01,634 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 161 transitions, 1443 flow [2024-06-14 12:53:01,634 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) [2024-06-14 12:53:01,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:01,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:01,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-14 12:53:01,634 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:01,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:01,634 INFO L85 PathProgramCache]: Analyzing trace with hash -243767069, now seen corresponding path program 35 times [2024-06-14 12:53:01,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:01,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498401610] [2024-06-14 12:53:01,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:01,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:03,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:03,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498401610] [2024-06-14 12:53:03,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498401610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:03,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:03,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:03,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460449756] [2024-06-14 12:53:03,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:03,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:03,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:03,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:03,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:03,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:03,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 161 transitions, 1443 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) [2024-06-14 12:53:03,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:03,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:03,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:03,888 INFO L124 PetriNetUnfolderBase]: 463/937 cut-off events. [2024-06-14 12:53:03,888 INFO L125 PetriNetUnfolderBase]: For 161345/161345 co-relation queries the response was YES. [2024-06-14 12:53:03,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6517 conditions, 937 events. 463/937 cut-off events. For 161345/161345 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5084 event pairs, 117 based on Foata normal form. 10/946 useless extension candidates. Maximal degree in co-relation 6398. Up to 716 conditions per place. [2024-06-14 12:53:03,895 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 43 changer transitions 11/183 dead transitions. [2024-06-14 12:53:03,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 183 transitions, 1881 flow [2024-06-14 12:53:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:03,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 12:53:03,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-14 12:53:03,896 INFO L175 Difference]: Start difference. First operand has 248 places, 161 transitions, 1443 flow. Second operand 12 states and 145 transitions. [2024-06-14 12:53:03,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 183 transitions, 1881 flow [2024-06-14 12:53:04,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 183 transitions, 1749 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-14 12:53:04,212 INFO L231 Difference]: Finished difference. Result has 252 places, 158 transitions, 1379 flow [2024-06-14 12:53:04,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1379, PETRI_PLACES=252, PETRI_TRANSITIONS=158} [2024-06-14 12:53:04,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-14 12:53:04,213 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 158 transitions, 1379 flow [2024-06-14 12:53:04,213 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) [2024-06-14 12:53:04,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:04,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:04,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-14 12:53:04,213 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:04,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:04,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1740886331, now seen corresponding path program 36 times [2024-06-14 12:53:04,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:04,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322208455] [2024-06-14 12:53:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:04,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:05,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:05,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322208455] [2024-06-14 12:53:05,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322208455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:05,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:05,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:05,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402786858] [2024-06-14 12:53:05,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:05,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:05,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:05,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:05,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:05,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:05,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 158 transitions, 1379 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) [2024-06-14 12:53:05,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:05,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:05,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:06,471 INFO L124 PetriNetUnfolderBase]: 455/925 cut-off events. [2024-06-14 12:53:06,471 INFO L125 PetriNetUnfolderBase]: For 163297/163297 co-relation queries the response was YES. [2024-06-14 12:53:06,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 925 events. 455/925 cut-off events. For 163297/163297 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5024 event pairs, 115 based on Foata normal form. 10/934 useless extension candidates. Maximal degree in co-relation 6268. Up to 733 conditions per place. [2024-06-14 12:53:06,478 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 34 changer transitions 16/179 dead transitions. [2024-06-14 12:53:06,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 179 transitions, 1805 flow [2024-06-14 12:53:06,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 12:53:06,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 12:53:06,479 INFO L175 Difference]: Start difference. First operand has 252 places, 158 transitions, 1379 flow. Second operand 12 states and 141 transitions. [2024-06-14 12:53:06,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 179 transitions, 1805 flow [2024-06-14 12:53:06,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 179 transitions, 1696 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-14 12:53:06,793 INFO L231 Difference]: Finished difference. Result has 250 places, 152 transitions, 1301 flow [2024-06-14 12:53:06,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1301, PETRI_PLACES=250, PETRI_TRANSITIONS=152} [2024-06-14 12:53:06,793 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-14 12:53:06,793 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 152 transitions, 1301 flow [2024-06-14 12:53:06,793 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) [2024-06-14 12:53:06,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:06,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:06,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-14 12:53:06,794 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:06,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:06,794 INFO L85 PathProgramCache]: Analyzing trace with hash -410005499, now seen corresponding path program 37 times [2024-06-14 12:53:06,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:06,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835472854] [2024-06-14 12:53:06,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:06,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:08,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:08,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835472854] [2024-06-14 12:53:08,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835472854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:08,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:08,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:08,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806554155] [2024-06-14 12:53:08,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:08,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:08,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:08,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:08,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:08,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:08,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 152 transitions, 1301 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) [2024-06-14 12:53:08,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:08,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:08,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:09,101 INFO L124 PetriNetUnfolderBase]: 431/885 cut-off events. [2024-06-14 12:53:09,102 INFO L125 PetriNetUnfolderBase]: For 155547/155547 co-relation queries the response was YES. [2024-06-14 12:53:09,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6186 conditions, 885 events. 431/885 cut-off events. For 155547/155547 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4800 event pairs, 111 based on Foata normal form. 8/892 useless extension candidates. Maximal degree in co-relation 6066. Up to 690 conditions per place. [2024-06-14 12:53:09,109 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 36 changer transitions 14/171 dead transitions. [2024-06-14 12:53:09,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 171 transitions, 1697 flow [2024-06-14 12:53:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:09,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-14 12:53:09,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 12:53:09,110 INFO L175 Difference]: Start difference. First operand has 250 places, 152 transitions, 1301 flow. Second operand 12 states and 135 transitions. [2024-06-14 12:53:09,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 171 transitions, 1697 flow [2024-06-14 12:53:09,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 171 transitions, 1617 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:53:09,372 INFO L231 Difference]: Finished difference. Result has 244 places, 147 transitions, 1267 flow [2024-06-14 12:53:09,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1267, PETRI_PLACES=244, PETRI_TRANSITIONS=147} [2024-06-14 12:53:09,373 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-14 12:53:09,373 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 147 transitions, 1267 flow [2024-06-14 12:53:09,373 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) [2024-06-14 12:53:09,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:09,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:09,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-14 12:53:09,373 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:09,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:09,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2139690261, now seen corresponding path program 38 times [2024-06-14 12:53:09,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:09,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246235413] [2024-06-14 12:53:09,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:09,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:13,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:13,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:13,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246235413] [2024-06-14 12:53:13,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246235413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:13,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:13,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:13,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553534540] [2024-06-14 12:53:13,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:13,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:13,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:13,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:13,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:13,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:13,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 147 transitions, 1267 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) [2024-06-14 12:53:13,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:13,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:13,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:13,971 INFO L124 PetriNetUnfolderBase]: 426/874 cut-off events. [2024-06-14 12:53:13,971 INFO L125 PetriNetUnfolderBase]: For 152222/152222 co-relation queries the response was YES. [2024-06-14 12:53:13,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6045 conditions, 874 events. 426/874 cut-off events. For 152222/152222 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4704 event pairs, 117 based on Foata normal form. 10/883 useless extension candidates. Maximal degree in co-relation 5928. Up to 756 conditions per place. [2024-06-14 12:53:13,979 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 132 selfloop transitions, 23 changer transitions 11/168 dead transitions. [2024-06-14 12:53:13,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 168 transitions, 1671 flow [2024-06-14 12:53:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-14 12:53:13,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-14 12:53:13,980 INFO L175 Difference]: Start difference. First operand has 244 places, 147 transitions, 1267 flow. Second operand 12 states and 137 transitions. [2024-06-14 12:53:13,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 168 transitions, 1671 flow [2024-06-14 12:53:14,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 168 transitions, 1591 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:53:14,232 INFO L231 Difference]: Finished difference. Result has 237 places, 144 transitions, 1216 flow [2024-06-14 12:53:14,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1187, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1216, PETRI_PLACES=237, PETRI_TRANSITIONS=144} [2024-06-14 12:53:14,233 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-14 12:53:14,233 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 144 transitions, 1216 flow [2024-06-14 12:53:14,233 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) [2024-06-14 12:53:14,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:14,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:14,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-14 12:53:14,233 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:14,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:14,233 INFO L85 PathProgramCache]: Analyzing trace with hash -243587145, now seen corresponding path program 30 times [2024-06-14 12:53:14,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:14,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870826881] [2024-06-14 12:53:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:14,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:16,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:16,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870826881] [2024-06-14 12:53:16,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870826881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:16,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:16,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:16,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410782643] [2024-06-14 12:53:16,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:16,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:16,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:16,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:16,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:16,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:16,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 144 transitions, 1216 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) [2024-06-14 12:53:16,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:16,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:16,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:16,775 INFO L124 PetriNetUnfolderBase]: 397/819 cut-off events. [2024-06-14 12:53:16,775 INFO L125 PetriNetUnfolderBase]: For 108497/108497 co-relation queries the response was YES. [2024-06-14 12:53:16,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5538 conditions, 819 events. 397/819 cut-off events. For 108497/108497 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4353 event pairs, 110 based on Foata normal form. 2/820 useless extension candidates. Maximal degree in co-relation 5424. Up to 695 conditions per place. [2024-06-14 12:53:16,781 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 32 changer transitions 0/159 dead transitions. [2024-06-14 12:53:16,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 159 transitions, 1570 flow [2024-06-14 12:53:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:53:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:53:16,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 12:53:16,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 12:53:16,782 INFO L175 Difference]: Start difference. First operand has 237 places, 144 transitions, 1216 flow. Second operand 11 states and 126 transitions. [2024-06-14 12:53:16,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 159 transitions, 1570 flow [2024-06-14 12:53:16,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 159 transitions, 1488 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-14 12:53:16,996 INFO L231 Difference]: Finished difference. Result has 234 places, 144 transitions, 1202 flow [2024-06-14 12:53:16,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1202, PETRI_PLACES=234, PETRI_TRANSITIONS=144} [2024-06-14 12:53:16,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-14 12:53:16,997 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 144 transitions, 1202 flow [2024-06-14 12:53:16,997 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) [2024-06-14 12:53:16,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:16,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:16,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-14 12:53:16,998 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:16,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:16,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2133256521, now seen corresponding path program 39 times [2024-06-14 12:53:16,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:16,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766694332] [2024-06-14 12:53:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:16,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:18,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:18,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:18,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766694332] [2024-06-14 12:53:18,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766694332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:18,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:18,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:18,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404787552] [2024-06-14 12:53:18,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:18,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:18,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:18,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:18,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:18,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:18,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 144 transitions, 1202 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) [2024-06-14 12:53:18,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:18,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:18,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:19,225 INFO L124 PetriNetUnfolderBase]: 438/906 cut-off events. [2024-06-14 12:53:19,225 INFO L125 PetriNetUnfolderBase]: For 157050/157050 co-relation queries the response was YES. [2024-06-14 12:53:19,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6531 conditions, 906 events. 438/906 cut-off events. For 157050/157050 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4944 event pairs, 125 based on Foata normal form. 8/913 useless extension candidates. Maximal degree in co-relation 6418. Up to 733 conditions per place. [2024-06-14 12:53:19,232 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 21 changer transitions 8/169 dead transitions. [2024-06-14 12:53:19,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 169 transitions, 1788 flow [2024-06-14 12:53:19,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:19,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 12:53:19,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:53:19,233 INFO L175 Difference]: Start difference. First operand has 234 places, 144 transitions, 1202 flow. Second operand 12 states and 138 transitions. [2024-06-14 12:53:19,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 169 transitions, 1788 flow [2024-06-14 12:53:19,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 169 transitions, 1722 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 12:53:19,501 INFO L231 Difference]: Finished difference. Result has 236 places, 141 transitions, 1161 flow [2024-06-14 12:53:19,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1161, PETRI_PLACES=236, PETRI_TRANSITIONS=141} [2024-06-14 12:53:19,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-14 12:53:19,502 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 141 transitions, 1161 flow [2024-06-14 12:53:19,502 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) [2024-06-14 12:53:19,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:19,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:19,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-14 12:53:19,502 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:19,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:19,502 INFO L85 PathProgramCache]: Analyzing trace with hash -243771719, now seen corresponding path program 40 times [2024-06-14 12:53:19,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:19,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13892776] [2024-06-14 12:53:19,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:19,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:21,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:21,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13892776] [2024-06-14 12:53:21,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13892776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:21,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:21,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:21,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123130345] [2024-06-14 12:53:21,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:21,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:21,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:21,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:21,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:21,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:21,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 141 transitions, 1161 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) [2024-06-14 12:53:21,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:21,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:21,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:21,755 INFO L124 PetriNetUnfolderBase]: 446/926 cut-off events. [2024-06-14 12:53:21,755 INFO L125 PetriNetUnfolderBase]: For 180822/180822 co-relation queries the response was YES. [2024-06-14 12:53:21,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7076 conditions, 926 events. 446/926 cut-off events. For 180822/180822 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5065 event pairs, 136 based on Foata normal form. 8/933 useless extension candidates. Maximal degree in co-relation 6962. Up to 694 conditions per place. [2024-06-14 12:53:21,763 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 30 changer transitions 8/167 dead transitions. [2024-06-14 12:53:21,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 167 transitions, 1749 flow [2024-06-14 12:53:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:21,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:21,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-14 12:53:21,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:53:21,764 INFO L175 Difference]: Start difference. First operand has 236 places, 141 transitions, 1161 flow. Second operand 12 states and 144 transitions. [2024-06-14 12:53:21,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 167 transitions, 1749 flow [2024-06-14 12:53:22,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 167 transitions, 1695 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:53:22,082 INFO L231 Difference]: Finished difference. Result has 233 places, 138 transitions, 1157 flow [2024-06-14 12:53:22,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1157, PETRI_PLACES=233, PETRI_TRANSITIONS=138} [2024-06-14 12:53:22,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-14 12:53:22,083 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 138 transitions, 1157 flow [2024-06-14 12:53:22,083 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) [2024-06-14 12:53:22,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:22,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:22,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-14 12:53:22,083 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:22,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:22,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1687244507, now seen corresponding path program 31 times [2024-06-14 12:53:22,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:22,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014174410] [2024-06-14 12:53:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:22,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:23,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:23,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014174410] [2024-06-14 12:53:23,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014174410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:23,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:23,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:23,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870874647] [2024-06-14 12:53:23,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:23,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:23,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:23,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:23,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:23,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:23,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 138 transitions, 1157 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) [2024-06-14 12:53:23,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:23,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:23,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:24,008 INFO L124 PetriNetUnfolderBase]: 424/880 cut-off events. [2024-06-14 12:53:24,008 INFO L125 PetriNetUnfolderBase]: For 146973/146973 co-relation queries the response was YES. [2024-06-14 12:53:24,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6668 conditions, 880 events. 424/880 cut-off events. For 146973/146973 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4737 event pairs, 145 based on Foata normal form. 2/881 useless extension candidates. Maximal degree in co-relation 6556. Up to 825 conditions per place. [2024-06-14 12:53:24,015 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 133 selfloop transitions, 17 changer transitions 0/152 dead transitions. [2024-06-14 12:53:24,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 152 transitions, 1489 flow [2024-06-14 12:53:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:53:24,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:53:24,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 12:53:24,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-14 12:53:24,017 INFO L175 Difference]: Start difference. First operand has 233 places, 138 transitions, 1157 flow. Second operand 11 states and 116 transitions. [2024-06-14 12:53:24,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 152 transitions, 1489 flow [2024-06-14 12:53:24,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 152 transitions, 1425 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:53:24,315 INFO L231 Difference]: Finished difference. Result has 230 places, 138 transitions, 1131 flow [2024-06-14 12:53:24,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1131, PETRI_PLACES=230, PETRI_TRANSITIONS=138} [2024-06-14 12:53:24,316 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-14 12:53:24,316 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 138 transitions, 1131 flow [2024-06-14 12:53:24,316 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) [2024-06-14 12:53:24,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:24,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:24,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-14 12:53:24,316 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:24,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:24,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1319223817, now seen corresponding path program 41 times [2024-06-14 12:53:24,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:24,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46172389] [2024-06-14 12:53:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:24,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:25,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:25,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:25,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46172389] [2024-06-14 12:53:25,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46172389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:25,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:25,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:25,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4635544] [2024-06-14 12:53:25,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:25,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:25,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:25,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:25,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:26,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:26,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 138 transitions, 1131 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) [2024-06-14 12:53:26,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:26,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:26,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:26,731 INFO L124 PetriNetUnfolderBase]: 411/857 cut-off events. [2024-06-14 12:53:26,731 INFO L125 PetriNetUnfolderBase]: For 137068/137068 co-relation queries the response was YES. [2024-06-14 12:53:26,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5745 conditions, 857 events. 411/857 cut-off events. For 137068/137068 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4607 event pairs, 126 based on Foata normal form. 10/866 useless extension candidates. Maximal degree in co-relation 5634. Up to 681 conditions per place. [2024-06-14 12:53:26,738 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 117 selfloop transitions, 29 changer transitions 11/159 dead transitions. [2024-06-14 12:53:26,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 159 transitions, 1517 flow [2024-06-14 12:53:26,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:26,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 12:53:26,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-14 12:53:26,739 INFO L175 Difference]: Start difference. First operand has 230 places, 138 transitions, 1131 flow. Second operand 12 states and 139 transitions. [2024-06-14 12:53:26,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 159 transitions, 1517 flow [2024-06-14 12:53:26,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 159 transitions, 1308 flow, removed 24 selfloop flow, removed 17 redundant places. [2024-06-14 12:53:26,986 INFO L231 Difference]: Finished difference. Result has 225 places, 135 transitions, 965 flow [2024-06-14 12:53:26,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=965, PETRI_PLACES=225, PETRI_TRANSITIONS=135} [2024-06-14 12:53:26,986 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-14 12:53:26,986 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 135 transitions, 965 flow [2024-06-14 12:53:26,986 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) [2024-06-14 12:53:26,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:26,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:26,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-14 12:53:26,986 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:26,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:26,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2133434151, now seen corresponding path program 42 times [2024-06-14 12:53:26,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:26,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635078651] [2024-06-14 12:53:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:26,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:28,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:28,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635078651] [2024-06-14 12:53:28,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635078651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:28,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:28,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:28,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893780761] [2024-06-14 12:53:28,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:28,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:28,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:28,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:28,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:28,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:28,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 135 transitions, 965 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) [2024-06-14 12:53:28,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:28,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:28,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:29,375 INFO L124 PetriNetUnfolderBase]: 372/784 cut-off events. [2024-06-14 12:53:29,376 INFO L125 PetriNetUnfolderBase]: For 105506/105506 co-relation queries the response was YES. [2024-06-14 12:53:29,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4393 conditions, 784 events. 372/784 cut-off events. For 105506/105506 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4144 event pairs, 107 based on Foata normal form. 10/793 useless extension candidates. Maximal degree in co-relation 4288. Up to 675 conditions per place. [2024-06-14 12:53:29,381 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 123 selfloop transitions, 19 changer transitions 11/155 dead transitions. [2024-06-14 12:53:29,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 155 transitions, 1331 flow [2024-06-14 12:53:29,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:29,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-14 12:53:29,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-14 12:53:29,382 INFO L175 Difference]: Start difference. First operand has 225 places, 135 transitions, 965 flow. Second operand 12 states and 134 transitions. [2024-06-14 12:53:29,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 155 transitions, 1331 flow [2024-06-14 12:53:29,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 155 transitions, 1267 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:53:29,559 INFO L231 Difference]: Finished difference. Result has 222 places, 131 transitions, 914 flow [2024-06-14 12:53:29,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=914, PETRI_PLACES=222, PETRI_TRANSITIONS=131} [2024-06-14 12:53:29,560 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-14 12:53:29,560 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 131 transitions, 914 flow [2024-06-14 12:53:29,560 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) [2024-06-14 12:53:29,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:29,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:29,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-14 12:53:29,560 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:29,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:29,561 INFO L85 PathProgramCache]: Analyzing trace with hash -317337961, now seen corresponding path program 1 times [2024-06-14 12:53:29,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:29,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792529724] [2024-06-14 12:53:29,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:29,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:31,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:31,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792529724] [2024-06-14 12:53:31,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792529724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:31,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:31,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:53:31,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473603995] [2024-06-14 12:53:31,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:31,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:53:31,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:31,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:53:31,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:53:31,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:31,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 131 transitions, 914 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:31,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:31,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:31,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:32,128 INFO L124 PetriNetUnfolderBase]: 354/754 cut-off events. [2024-06-14 12:53:32,128 INFO L125 PetriNetUnfolderBase]: For 90665/90665 co-relation queries the response was YES. [2024-06-14 12:53:32,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4232 conditions, 754 events. 354/754 cut-off events. For 90665/90665 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3998 event pairs, 95 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 4128. Up to 461 conditions per place. [2024-06-14 12:53:32,133 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 93 selfloop transitions, 45 changer transitions 12/152 dead transitions. [2024-06-14 12:53:32,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 152 transitions, 1274 flow [2024-06-14 12:53:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 12:53:32,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:53:32,134 INFO L175 Difference]: Start difference. First operand has 222 places, 131 transitions, 914 flow. Second operand 12 states and 138 transitions. [2024-06-14 12:53:32,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 152 transitions, 1274 flow [2024-06-14 12:53:32,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 152 transitions, 1201 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-14 12:53:32,291 INFO L231 Difference]: Finished difference. Result has 217 places, 127 transitions, 916 flow [2024-06-14 12:53:32,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=916, PETRI_PLACES=217, PETRI_TRANSITIONS=127} [2024-06-14 12:53:32,291 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-14 12:53:32,291 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 127 transitions, 916 flow [2024-06-14 12:53:32,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:32,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:32,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:32,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-14 12:53:32,292 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:32,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:32,292 INFO L85 PathProgramCache]: Analyzing trace with hash -116248711, now seen corresponding path program 2 times [2024-06-14 12:53:32,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:32,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664039682] [2024-06-14 12:53:32,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:32,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:34,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664039682] [2024-06-14 12:53:34,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664039682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:34,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:34,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:53:34,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077955651] [2024-06-14 12:53:34,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:34,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:53:34,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:34,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:53:34,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:53:34,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:34,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 127 transitions, 916 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:34,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:34,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:34,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:34,916 INFO L124 PetriNetUnfolderBase]: 330/702 cut-off events. [2024-06-14 12:53:34,916 INFO L125 PetriNetUnfolderBase]: For 69633/69633 co-relation queries the response was YES. [2024-06-14 12:53:34,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3559 conditions, 702 events. 330/702 cut-off events. For 69633/69633 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3652 event pairs, 88 based on Foata normal form. 6/707 useless extension candidates. Maximal degree in co-relation 3458. Up to 418 conditions per place. [2024-06-14 12:53:34,921 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 43 changer transitions 11/145 dead transitions. [2024-06-14 12:53:34,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 145 transitions, 1250 flow [2024-06-14 12:53:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:53:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:53:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:53:34,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:53:34,922 INFO L175 Difference]: Start difference. First operand has 217 places, 127 transitions, 916 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:53:34,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 145 transitions, 1250 flow [2024-06-14 12:53:35,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 145 transitions, 1152 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:53:35,041 INFO L231 Difference]: Finished difference. Result has 210 places, 122 transitions, 880 flow [2024-06-14 12:53:35,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=880, PETRI_PLACES=210, PETRI_TRANSITIONS=122} [2024-06-14 12:53:35,041 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-14 12:53:35,041 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 122 transitions, 880 flow [2024-06-14 12:53:35,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:35,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:35,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:35,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-14 12:53:35,042 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:35,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:35,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1175617845, now seen corresponding path program 3 times [2024-06-14 12:53:35,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:35,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538254848] [2024-06-14 12:53:35,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:35,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:37,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538254848] [2024-06-14 12:53:37,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538254848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:37,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:37,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:53:37,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459262588] [2024-06-14 12:53:37,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:37,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:53:37,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:37,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:53:37,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:53:37,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:37,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 122 transitions, 880 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:37,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:37,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:37,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:38,462 INFO L124 PetriNetUnfolderBase]: 302/642 cut-off events. [2024-06-14 12:53:38,462 INFO L125 PetriNetUnfolderBase]: For 48355/48355 co-relation queries the response was YES. [2024-06-14 12:53:38,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 642 events. 302/642 cut-off events. For 48355/48355 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3255 event pairs, 68 based on Foata normal form. 6/647 useless extension candidates. Maximal degree in co-relation 2806. Up to 384 conditions per place. [2024-06-14 12:53:38,466 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 83 selfloop transitions, 34 changer transitions 23/142 dead transitions. [2024-06-14 12:53:38,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 142 transitions, 1212 flow [2024-06-14 12:53:38,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:38,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:53:38,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:53:38,466 INFO L175 Difference]: Start difference. First operand has 210 places, 122 transitions, 880 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:53:38,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 142 transitions, 1212 flow [2024-06-14 12:53:38,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 142 transitions, 1116 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-14 12:53:38,549 INFO L231 Difference]: Finished difference. Result has 202 places, 112 transitions, 796 flow [2024-06-14 12:53:38,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=796, PETRI_PLACES=202, PETRI_TRANSITIONS=112} [2024-06-14 12:53:38,549 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-14 12:53:38,549 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 112 transitions, 796 flow [2024-06-14 12:53:38,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:38,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:38,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:38,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-14 12:53:38,549 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:38,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:38,550 INFO L85 PathProgramCache]: Analyzing trace with hash -255379751, now seen corresponding path program 4 times [2024-06-14 12:53:38,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:38,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82930940] [2024-06-14 12:53:38,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:38,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:40,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:40,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82930940] [2024-06-14 12:53:40,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82930940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:40,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:40,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:53:40,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437387690] [2024-06-14 12:53:40,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:40,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:53:40,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:40,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:53:40,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:53:40,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:40,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 112 transitions, 796 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:40,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:40,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:40,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:41,226 INFO L124 PetriNetUnfolderBase]: 284/605 cut-off events. [2024-06-14 12:53:41,226 INFO L125 PetriNetUnfolderBase]: For 43216/43216 co-relation queries the response was YES. [2024-06-14 12:53:41,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2710 conditions, 605 events. 284/605 cut-off events. For 43216/43216 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3028 event pairs, 62 based on Foata normal form. 6/610 useless extension candidates. Maximal degree in co-relation 2616. Up to 477 conditions per place. [2024-06-14 12:53:41,230 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 88 selfloop transitions, 22 changer transitions 19/131 dead transitions. [2024-06-14 12:53:41,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 131 transitions, 1102 flow [2024-06-14 12:53:41,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:41,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 12:53:41,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-14 12:53:41,231 INFO L175 Difference]: Start difference. First operand has 202 places, 112 transitions, 796 flow. Second operand 12 states and 130 transitions. [2024-06-14 12:53:41,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 131 transitions, 1102 flow [2024-06-14 12:53:41,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 131 transitions, 993 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-14 12:53:41,294 INFO L231 Difference]: Finished difference. Result has 186 places, 105 transitions, 695 flow [2024-06-14 12:53:41,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=695, PETRI_PLACES=186, PETRI_TRANSITIONS=105} [2024-06-14 12:53:41,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-14 12:53:41,295 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 105 transitions, 695 flow [2024-06-14 12:53:41,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:41,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:41,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:41,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-14 12:53:41,295 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:41,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:41,295 INFO L85 PathProgramCache]: Analyzing trace with hash -893327225, now seen corresponding path program 5 times [2024-06-14 12:53:41,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:41,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499078486] [2024-06-14 12:53:41,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:41,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:43,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:43,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499078486] [2024-06-14 12:53:43,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499078486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:43,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:43,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:53:43,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979556377] [2024-06-14 12:53:43,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:43,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:53:43,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:43,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:53:43,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:53:43,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:43,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 105 transitions, 695 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:43,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:43,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:43,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:44,158 INFO L124 PetriNetUnfolderBase]: 260/557 cut-off events. [2024-06-14 12:53:44,158 INFO L125 PetriNetUnfolderBase]: For 37059/37059 co-relation queries the response was YES. [2024-06-14 12:53:44,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 557 events. 260/557 cut-off events. For 37059/37059 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2712 event pairs, 61 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 2338. Up to 418 conditions per place. [2024-06-14 12:53:44,162 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 82 selfloop transitions, 22 changer transitions 18/124 dead transitions. [2024-06-14 12:53:44,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 124 transitions, 987 flow [2024-06-14 12:53:44,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:44,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:44,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:53:44,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:53:44,164 INFO L175 Difference]: Start difference. First operand has 186 places, 105 transitions, 695 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:53:44,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 124 transitions, 987 flow [2024-06-14 12:53:44,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 124 transitions, 933 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:53:44,225 INFO L231 Difference]: Finished difference. Result has 179 places, 98 transitions, 654 flow [2024-06-14 12:53:44,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=654, PETRI_PLACES=179, PETRI_TRANSITIONS=98} [2024-06-14 12:53:44,225 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-14 12:53:44,225 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 98 transitions, 654 flow [2024-06-14 12:53:44,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:44,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:44,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:44,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-14 12:53:44,226 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:44,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1214207931, now seen corresponding path program 6 times [2024-06-14 12:53:44,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:44,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059464289] [2024-06-14 12:53:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:44,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:46,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:46,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:46,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059464289] [2024-06-14 12:53:46,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059464289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:46,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:46,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:53:46,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332863707] [2024-06-14 12:53:46,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:46,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:53:46,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:46,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:53:46,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:53:46,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:46,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 98 transitions, 654 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:46,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:46,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:46,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:47,318 INFO L124 PetriNetUnfolderBase]: 244/525 cut-off events. [2024-06-14 12:53:47,319 INFO L125 PetriNetUnfolderBase]: For 34813/34813 co-relation queries the response was YES. [2024-06-14 12:53:47,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 525 events. 244/525 cut-off events. For 34813/34813 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2506 event pairs, 58 based on Foata normal form. 6/530 useless extension candidates. Maximal degree in co-relation 2220. Up to 407 conditions per place. [2024-06-14 12:53:47,322 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 72 selfloop transitions, 12 changer transitions 30/116 dead transitions. [2024-06-14 12:53:47,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 116 transitions, 926 flow [2024-06-14 12:53:47,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:47,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 12:53:47,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-14 12:53:47,323 INFO L175 Difference]: Start difference. First operand has 179 places, 98 transitions, 654 flow. Second operand 12 states and 127 transitions. [2024-06-14 12:53:47,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 116 transitions, 926 flow [2024-06-14 12:53:47,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 116 transitions, 870 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:53:47,382 INFO L231 Difference]: Finished difference. Result has 169 places, 83 transitions, 542 flow [2024-06-14 12:53:47,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=542, PETRI_PLACES=169, PETRI_TRANSITIONS=83} [2024-06-14 12:53:47,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-14 12:53:47,382 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 83 transitions, 542 flow [2024-06-14 12:53:47,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:47,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:47,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:47,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-14 12:53:47,383 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:47,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:47,383 INFO L85 PathProgramCache]: Analyzing trace with hash 374697735, now seen corresponding path program 7 times [2024-06-14 12:53:47,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:47,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086051317] [2024-06-14 12:53:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:47,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:49,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:49,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086051317] [2024-06-14 12:53:49,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086051317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:49,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:49,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:53:49,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84760110] [2024-06-14 12:53:49,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:49,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:53:49,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:49,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:53:49,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:53:50,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:50,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 83 transitions, 542 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:50,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:50,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:50,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:50,670 INFO L124 PetriNetUnfolderBase]: 234/496 cut-off events. [2024-06-14 12:53:50,670 INFO L125 PetriNetUnfolderBase]: For 39046/39046 co-relation queries the response was YES. [2024-06-14 12:53:50,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 496 events. 234/496 cut-off events. For 39046/39046 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2323 event pairs, 67 based on Foata normal form. 6/502 useless extension candidates. Maximal degree in co-relation 2368. Up to 298 conditions per place. [2024-06-14 12:53:50,673 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 23 changer transitions 10/103 dead transitions. [2024-06-14 12:53:50,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 103 transitions, 908 flow [2024-06-14 12:53:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:50,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-14 12:53:50,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-14 12:53:50,674 INFO L175 Difference]: Start difference. First operand has 169 places, 83 transitions, 542 flow. Second operand 12 states and 129 transitions. [2024-06-14 12:53:50,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 103 transitions, 908 flow [2024-06-14 12:53:50,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 103 transitions, 822 flow, removed 16 selfloop flow, removed 18 redundant places. [2024-06-14 12:53:50,727 INFO L231 Difference]: Finished difference. Result has 144 places, 79 transitions, 501 flow [2024-06-14 12:53:50,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=501, PETRI_PLACES=144, PETRI_TRANSITIONS=79} [2024-06-14 12:53:50,728 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-14 12:53:50,728 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 79 transitions, 501 flow [2024-06-14 12:53:50,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:50,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:50,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:50,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-14 12:53:50,728 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:50,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:50,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1038733881, now seen corresponding path program 8 times [2024-06-14 12:53:50,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:50,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087149523] [2024-06-14 12:53:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:50,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:53,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:53,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087149523] [2024-06-14 12:53:53,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087149523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:53,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:53,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:53:53,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529196565] [2024-06-14 12:53:53,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:53,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:53:53,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:53,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:53:53,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:53:53,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:53,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 79 transitions, 501 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:53,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:53,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:53,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:54,091 INFO L124 PetriNetUnfolderBase]: 207/439 cut-off events. [2024-06-14 12:53:54,091 INFO L125 PetriNetUnfolderBase]: For 22532/22532 co-relation queries the response was YES. [2024-06-14 12:53:54,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 439 events. 207/439 cut-off events. For 22532/22532 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1977 event pairs, 54 based on Foata normal form. 6/445 useless extension candidates. Maximal degree in co-relation 1816. Up to 289 conditions per place. [2024-06-14 12:53:54,093 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 55 selfloop transitions, 21 changer transitions 16/94 dead transitions. [2024-06-14 12:53:54,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 94 transitions, 721 flow [2024-06-14 12:53:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:54,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-14 12:53:54,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-14 12:53:54,094 INFO L175 Difference]: Start difference. First operand has 144 places, 79 transitions, 501 flow. Second operand 12 states and 123 transitions. [2024-06-14 12:53:54,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 94 transitions, 721 flow [2024-06-14 12:53:54,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 94 transitions, 668 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:53:54,126 INFO L231 Difference]: Finished difference. Result has 139 places, 73 transitions, 462 flow [2024-06-14 12:53:54,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=462, PETRI_PLACES=139, PETRI_TRANSITIONS=73} [2024-06-14 12:53:54,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-14 12:53:54,127 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 73 transitions, 462 flow [2024-06-14 12:53:54,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:54,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:54,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:54,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-14 12:53:54,127 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:54,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:54,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2097315545, now seen corresponding path program 9 times [2024-06-14 12:53:54,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:54,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253267576] [2024-06-14 12:53:54,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:54,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:55,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:55,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253267576] [2024-06-14 12:53:55,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253267576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:55,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:55,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:55,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326287678] [2024-06-14 12:53:55,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:55,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:55,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:55,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:55,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:55,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:55,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 73 transitions, 462 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:55,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:55,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:55,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:56,258 INFO L124 PetriNetUnfolderBase]: 196/414 cut-off events. [2024-06-14 12:53:56,258 INFO L125 PetriNetUnfolderBase]: For 19930/19930 co-relation queries the response was YES. [2024-06-14 12:53:56,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 414 events. 196/414 cut-off events. For 19930/19930 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1823 event pairs, 52 based on Foata normal form. 6/420 useless extension candidates. Maximal degree in co-relation 1702. Up to 332 conditions per place. [2024-06-14 12:53:56,260 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 61 selfloop transitions, 13 changer transitions 12/88 dead transitions. [2024-06-14 12:53:56,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 88 transitions, 672 flow [2024-06-14 12:53:56,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:53:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:53:56,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 12:53:56,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-14 12:53:56,261 INFO L175 Difference]: Start difference. First operand has 139 places, 73 transitions, 462 flow. Second operand 11 states and 116 transitions. [2024-06-14 12:53:56,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 88 transitions, 672 flow [2024-06-14 12:53:56,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 88 transitions, 618 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:53:56,280 INFO L231 Difference]: Finished difference. Result has 127 places, 69 transitions, 415 flow [2024-06-14 12:53:56,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=415, PETRI_PLACES=127, PETRI_TRANSITIONS=69} [2024-06-14 12:53:56,281 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-14 12:53:56,281 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 69 transitions, 415 flow [2024-06-14 12:53:56,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:56,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:56,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:56,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-14 12:53:56,281 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:56,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:56,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1362705413, now seen corresponding path program 10 times [2024-06-14 12:53:56,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:56,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285122098] [2024-06-14 12:53:56,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:56,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:58,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:58,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285122098] [2024-06-14 12:53:58,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285122098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:58,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:58,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:53:58,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54403775] [2024-06-14 12:53:58,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:58,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:53:58,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:58,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:53:58,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:53:58,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:53:58,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 69 transitions, 415 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:58,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:58,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:53:58,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:59,193 INFO L124 PetriNetUnfolderBase]: 182/388 cut-off events. [2024-06-14 12:53:59,193 INFO L125 PetriNetUnfolderBase]: For 15878/15878 co-relation queries the response was YES. [2024-06-14 12:53:59,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 388 events. 182/388 cut-off events. For 15878/15878 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1668 event pairs, 50 based on Foata normal form. 6/394 useless extension candidates. Maximal degree in co-relation 1548. Up to 290 conditions per place. [2024-06-14 12:53:59,196 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 15 changer transitions 10/86 dead transitions. [2024-06-14 12:53:59,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 86 transitions, 625 flow [2024-06-14 12:53:59,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-14 12:53:59,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 12:53:59,197 INFO L175 Difference]: Start difference. First operand has 127 places, 69 transitions, 415 flow. Second operand 12 states and 126 transitions. [2024-06-14 12:53:59,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 86 transitions, 625 flow [2024-06-14 12:53:59,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 86 transitions, 591 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:53:59,219 INFO L231 Difference]: Finished difference. Result has 122 places, 65 transitions, 394 flow [2024-06-14 12:53:59,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=394, PETRI_PLACES=122, PETRI_TRANSITIONS=65} [2024-06-14 12:53:59,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-14 12:53:59,220 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 65 transitions, 394 flow [2024-06-14 12:53:59,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:59,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:59,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:59,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-14 12:53:59,221 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:53:59,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:59,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1256350317, now seen corresponding path program 11 times [2024-06-14 12:53:59,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:59,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348493783] [2024-06-14 12:53:59,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:59,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:54:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:54:00,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:54:00,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348493783] [2024-06-14 12:54:00,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348493783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:54:00,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:54:00,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:54:00,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569534802] [2024-06-14 12:54:00,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:54:00,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:54:00,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:54:00,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:54:00,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:54:00,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:54:00,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 65 transitions, 394 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:00,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:54:00,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:54:00,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:54:01,187 INFO L124 PetriNetUnfolderBase]: 170/364 cut-off events. [2024-06-14 12:54:01,187 INFO L125 PetriNetUnfolderBase]: For 14404/14404 co-relation queries the response was YES. [2024-06-14 12:54:01,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1520 conditions, 364 events. 170/364 cut-off events. For 14404/14404 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1522 event pairs, 46 based on Foata normal form. 6/370 useless extension candidates. Maximal degree in co-relation 1462. Up to 289 conditions per place. [2024-06-14 12:54:01,189 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 53 selfloop transitions, 9 changer transitions 17/81 dead transitions. [2024-06-14 12:54:01,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 81 transitions, 586 flow [2024-06-14 12:54:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:54:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:54:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 12:54:01,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 12:54:01,190 INFO L175 Difference]: Start difference. First operand has 122 places, 65 transitions, 394 flow. Second operand 12 states and 120 transitions. [2024-06-14 12:54:01,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 81 transitions, 586 flow [2024-06-14 12:54:01,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 81 transitions, 548 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 12:54:01,203 INFO L231 Difference]: Finished difference. Result has 116 places, 60 transitions, 354 flow [2024-06-14 12:54:01,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=354, PETRI_PLACES=116, PETRI_TRANSITIONS=60} [2024-06-14 12:54:01,203 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-14 12:54:01,203 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 60 transitions, 354 flow [2024-06-14 12:54:01,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:01,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:54:01,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:54:01,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-14 12:54:01,204 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:54:01,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:54:01,204 INFO L85 PathProgramCache]: Analyzing trace with hash -948768639, now seen corresponding path program 12 times [2024-06-14 12:54:01,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:54:01,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083003993] [2024-06-14 12:54:01,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:54:01,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:54:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:54:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:54:02,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:54:02,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083003993] [2024-06-14 12:54:02,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083003993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:54:02,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:54:02,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:54:02,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671145928] [2024-06-14 12:54:02,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:54:02,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:54:02,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:54:02,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:54:02,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:54:03,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:54:03,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 60 transitions, 354 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:03,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:54:03,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:54:03,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:54:03,419 INFO L124 PetriNetUnfolderBase]: 152/330 cut-off events. [2024-06-14 12:54:03,419 INFO L125 PetriNetUnfolderBase]: For 12298/12298 co-relation queries the response was YES. [2024-06-14 12:54:03,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1377 conditions, 330 events. 152/330 cut-off events. For 12298/12298 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1330 event pairs, 42 based on Foata normal form. 6/336 useless extension candidates. Maximal degree in co-relation 1322. Up to 252 conditions per place. [2024-06-14 12:54:03,421 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 46 selfloop transitions, 6 changer transitions 22/76 dead transitions. [2024-06-14 12:54:03,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 76 transitions, 538 flow [2024-06-14 12:54:03,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:54:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:54:03,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-14 12:54:03,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-14 12:54:03,422 INFO L175 Difference]: Start difference. First operand has 116 places, 60 transitions, 354 flow. Second operand 12 states and 119 transitions. [2024-06-14 12:54:03,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 76 transitions, 538 flow [2024-06-14 12:54:03,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 76 transitions, 510 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:54:03,435 INFO L231 Difference]: Finished difference. Result has 108 places, 51 transitions, 287 flow [2024-06-14 12:54:03,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=287, PETRI_PLACES=108, PETRI_TRANSITIONS=51} [2024-06-14 12:54:03,436 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-14 12:54:03,436 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 51 transitions, 287 flow [2024-06-14 12:54:03,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:03,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:54:03,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:54:03,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-14 12:54:03,437 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:54:03,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:54:03,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2106252845, now seen corresponding path program 13 times [2024-06-14 12:54:03,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:54:03,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989550572] [2024-06-14 12:54:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:54:03,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:54:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:54:05,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:54:05,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:54:05,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989550572] [2024-06-14 12:54:05,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989550572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:54:05,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:54:05,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:54:05,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073007086] [2024-06-14 12:54:05,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:54:05,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:54:05,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:54:05,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:54:05,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:54:05,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:54:05,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 51 transitions, 287 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:05,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:54:05,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:54:05,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:54:05,707 INFO L124 PetriNetUnfolderBase]: 131/287 cut-off events. [2024-06-14 12:54:05,707 INFO L125 PetriNetUnfolderBase]: For 9758/9758 co-relation queries the response was YES. [2024-06-14 12:54:05,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 287 events. 131/287 cut-off events. For 9758/9758 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1099 event pairs, 36 based on Foata normal form. 6/293 useless extension candidates. Maximal degree in co-relation 1152. Up to 205 conditions per place. [2024-06-14 12:54:05,709 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 39 selfloop transitions, 10 changer transitions 17/68 dead transitions. [2024-06-14 12:54:05,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 68 transitions, 459 flow [2024-06-14 12:54:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:54:05,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:54:05,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-14 12:54:05,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-14 12:54:05,710 INFO L175 Difference]: Start difference. First operand has 108 places, 51 transitions, 287 flow. Second operand 12 states and 121 transitions. [2024-06-14 12:54:05,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 68 transitions, 459 flow [2024-06-14 12:54:05,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 68 transitions, 431 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-14 12:54:05,718 INFO L231 Difference]: Finished difference. Result has 96 places, 46 transitions, 264 flow [2024-06-14 12:54:05,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=264, PETRI_PLACES=96, PETRI_TRANSITIONS=46} [2024-06-14 12:54:05,718 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-14 12:54:05,718 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 46 transitions, 264 flow [2024-06-14 12:54:05,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:05,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:54:05,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:54:05,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-14 12:54:05,719 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:54:05,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:54:05,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1913254539, now seen corresponding path program 14 times [2024-06-14 12:54:05,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:54:05,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86034706] [2024-06-14 12:54:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:54:05,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:54:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:54:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:54:08,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:54:08,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86034706] [2024-06-14 12:54:08,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86034706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:54:08,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:54:08,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:54:08,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517206853] [2024-06-14 12:54:08,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:54:08,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:54:08,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:54:08,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:54:08,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:54:08,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:54:08,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 46 transitions, 264 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:08,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:54:08,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:54:08,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:54:09,064 INFO L124 PetriNetUnfolderBase]: 115/255 cut-off events. [2024-06-14 12:54:09,064 INFO L125 PetriNetUnfolderBase]: For 7579/7579 co-relation queries the response was YES. [2024-06-14 12:54:09,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 255 events. 115/255 cut-off events. For 7579/7579 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 922 event pairs, 40 based on Foata normal form. 6/261 useless extension candidates. Maximal degree in co-relation 1018. Up to 167 conditions per place. [2024-06-14 12:54:09,065 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 36 selfloop transitions, 14 changer transitions 9/61 dead transitions. [2024-06-14 12:54:09,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 61 transitions, 414 flow [2024-06-14 12:54:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:54:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:54:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 12:54:09,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-14 12:54:09,066 INFO L175 Difference]: Start difference. First operand has 96 places, 46 transitions, 264 flow. Second operand 11 states and 115 transitions. [2024-06-14 12:54:09,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 61 transitions, 414 flow [2024-06-14 12:54:09,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 61 transitions, 386 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:54:09,072 INFO L231 Difference]: Finished difference. Result has 88 places, 43 transitions, 252 flow [2024-06-14 12:54:09,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=252, PETRI_PLACES=88, PETRI_TRANSITIONS=43} [2024-06-14 12:54:09,072 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-14 12:54:09,073 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 43 transitions, 252 flow [2024-06-14 12:54:09,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:09,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:54:09,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:54:09,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-14 12:54:09,073 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:54:09,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:54:09,073 INFO L85 PathProgramCache]: Analyzing trace with hash 443926327, now seen corresponding path program 15 times [2024-06-14 12:54:09,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:54:09,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163156595] [2024-06-14 12:54:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:54:09,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:54:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:54:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:54:10,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:54:10,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163156595] [2024-06-14 12:54:10,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163156595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:54:10,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:54:10,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:54:10,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324371312] [2024-06-14 12:54:10,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:54:10,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:54:10,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:54:10,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:54:10,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:54:10,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:54:10,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 43 transitions, 252 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:10,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:54:10,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:54:10,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:54:11,145 INFO L124 PetriNetUnfolderBase]: 105/237 cut-off events. [2024-06-14 12:54:11,145 INFO L125 PetriNetUnfolderBase]: For 6076/6076 co-relation queries the response was YES. [2024-06-14 12:54:11,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 237 events. 105/237 cut-off events. For 6076/6076 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 839 event pairs, 32 based on Foata normal form. 6/243 useless extension candidates. Maximal degree in co-relation 940. Up to 167 conditions per place. [2024-06-14 12:54:11,146 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 34 selfloop transitions, 9 changer transitions 12/57 dead transitions. [2024-06-14 12:54:11,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 57 transitions, 392 flow [2024-06-14 12:54:11,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:54:11,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:54:11,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-14 12:54:11,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153409090909091 [2024-06-14 12:54:11,147 INFO L175 Difference]: Start difference. First operand has 88 places, 43 transitions, 252 flow. Second operand 11 states and 111 transitions. [2024-06-14 12:54:11,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 57 transitions, 392 flow [2024-06-14 12:54:11,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 57 transitions, 358 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:54:11,153 INFO L231 Difference]: Finished difference. Result has 84 places, 39 transitions, 217 flow [2024-06-14 12:54:11,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=217, PETRI_PLACES=84, PETRI_TRANSITIONS=39} [2024-06-14 12:54:11,153 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-14 12:54:11,153 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 39 transitions, 217 flow [2024-06-14 12:54:11,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:11,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:54:11,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:54:11,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-14 12:54:11,153 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:54:11,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:54:11,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1564054133, now seen corresponding path program 16 times [2024-06-14 12:54:11,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:54:11,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795272547] [2024-06-14 12:54:11,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:54:11,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:54:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:54:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:54:13,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:54:13,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795272547] [2024-06-14 12:54:13,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795272547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:54:13,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:54:13,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:54:13,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718331614] [2024-06-14 12:54:13,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:54:13,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:54:13,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:54:13,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:54:13,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:54:13,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:54:13,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 39 transitions, 217 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:13,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:54:13,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:54:13,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:54:13,468 INFO L124 PetriNetUnfolderBase]: 91/211 cut-off events. [2024-06-14 12:54:13,468 INFO L125 PetriNetUnfolderBase]: For 5148/5148 co-relation queries the response was YES. [2024-06-14 12:54:13,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 211 events. 91/211 cut-off events. For 5148/5148 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 711 event pairs, 32 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 830. Up to 139 conditions per place. [2024-06-14 12:54:13,469 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 28 selfloop transitions, 6 changer transitions 18/54 dead transitions. [2024-06-14 12:54:13,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 54 transitions, 353 flow [2024-06-14 12:54:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:54:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:54:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-14 12:54:13,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-14 12:54:13,469 INFO L175 Difference]: Start difference. First operand has 84 places, 39 transitions, 217 flow. Second operand 12 states and 118 transitions. [2024-06-14 12:54:13,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 54 transitions, 353 flow [2024-06-14 12:54:13,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 54 transitions, 321 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:54:13,474 INFO L231 Difference]: Finished difference. Result has 78 places, 32 transitions, 167 flow [2024-06-14 12:54:13,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=167, PETRI_PLACES=78, PETRI_TRANSITIONS=32} [2024-06-14 12:54:13,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-14 12:54:13,474 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 32 transitions, 167 flow [2024-06-14 12:54:13,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:13,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:54:13,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:54:13,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-14 12:54:13,475 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:54:13,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:54:13,475 INFO L85 PathProgramCache]: Analyzing trace with hash 452863627, now seen corresponding path program 17 times [2024-06-14 12:54:13,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:54:13,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266197967] [2024-06-14 12:54:13,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:54:13,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:54:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:54:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:54:14,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:54:14,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266197967] [2024-06-14 12:54:14,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266197967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:54:14,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:54:14,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:54:14,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916589399] [2024-06-14 12:54:14,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:54:14,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:54:14,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:54:14,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:54:14,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:54:15,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:54:15,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 32 transitions, 167 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:15,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:54:15,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:54:15,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:54:15,369 INFO L124 PetriNetUnfolderBase]: 79/183 cut-off events. [2024-06-14 12:54:15,369 INFO L125 PetriNetUnfolderBase]: For 4316/4316 co-relation queries the response was YES. [2024-06-14 12:54:15,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 183 events. 79/183 cut-off events. For 4316/4316 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 582 event pairs, 28 based on Foata normal form. 6/189 useless extension candidates. Maximal degree in co-relation 716. Up to 113 conditions per place. [2024-06-14 12:54:15,370 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 23 selfloop transitions, 6 changer transitions 15/46 dead transitions. [2024-06-14 12:54:15,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 46 transitions, 285 flow [2024-06-14 12:54:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:54:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:54:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-14 12:54:15,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-14 12:54:15,370 INFO L175 Difference]: Start difference. First operand has 78 places, 32 transitions, 167 flow. Second operand 11 states and 107 transitions. [2024-06-14 12:54:15,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 46 transitions, 285 flow [2024-06-14 12:54:15,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 46 transitions, 259 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-14 12:54:15,373 INFO L231 Difference]: Finished difference. Result has 65 places, 27 transitions, 135 flow [2024-06-14 12:54:15,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=135, PETRI_PLACES=65, PETRI_TRANSITIONS=27} [2024-06-14 12:54:15,373 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-14 12:54:15,373 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 27 transitions, 135 flow [2024-06-14 12:54:15,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:15,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:54:15,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:54:15,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-14 12:54:15,374 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:54:15,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:54:15,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1746811943, now seen corresponding path program 18 times [2024-06-14 12:54:15,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:54:15,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106546603] [2024-06-14 12:54:15,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:54:15,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:54:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:54:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:54:17,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:54:17,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106546603] [2024-06-14 12:54:17,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106546603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:54:17,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:54:17,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:54:17,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015204113] [2024-06-14 12:54:17,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:54:17,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:54:17,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:54:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:54:17,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:54:18,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:54:18,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 27 transitions, 135 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:18,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:54:18,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:54:18,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:54:18,395 INFO L124 PetriNetUnfolderBase]: 48/118 cut-off events. [2024-06-14 12:54:18,395 INFO L125 PetriNetUnfolderBase]: For 1518/1518 co-relation queries the response was YES. [2024-06-14 12:54:18,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 118 events. 48/118 cut-off events. For 1518/1518 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 288 event pairs, 4 based on Foata normal form. 6/124 useless extension candidates. Maximal degree in co-relation 394. Up to 38 conditions per place. [2024-06-14 12:54:18,396 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 20 selfloop transitions, 9 changer transitions 10/41 dead transitions. [2024-06-14 12:54:18,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 41 transitions, 243 flow [2024-06-14 12:54:18,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:54:18,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:54:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-14 12:54:18,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2864583333333333 [2024-06-14 12:54:18,397 INFO L175 Difference]: Start difference. First operand has 65 places, 27 transitions, 135 flow. Second operand 12 states and 110 transitions. [2024-06-14 12:54:18,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 41 transitions, 243 flow [2024-06-14 12:54:18,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 41 transitions, 223 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:54:18,398 INFO L231 Difference]: Finished difference. Result has 59 places, 23 transitions, 117 flow [2024-06-14 12:54:18,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=117, PETRI_PLACES=59, PETRI_TRANSITIONS=23} [2024-06-14 12:54:18,398 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-14 12:54:18,398 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 23 transitions, 117 flow [2024-06-14 12:54:18,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:18,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:54:18,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:54:18,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-14 12:54:18,399 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:54:18,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:54:18,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1301313385, now seen corresponding path program 19 times [2024-06-14 12:54:18,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:54:18,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165762463] [2024-06-14 12:54:18,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:54:18,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:54:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:54:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:54:20,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:54:20,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165762463] [2024-06-14 12:54:20,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165762463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:54:20,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:54:20,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:54:20,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320567797] [2024-06-14 12:54:20,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:54:20,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:54:20,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:54:20,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:54:20,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:54:20,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:54:20,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 23 transitions, 117 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:20,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:54:20,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:54:20,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:54:20,679 INFO L124 PetriNetUnfolderBase]: 21/61 cut-off events. [2024-06-14 12:54:20,679 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-06-14 12:54:20,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 61 events. 21/61 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 170. Up to 24 conditions per place. [2024-06-14 12:54:20,680 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-14 12:54:20,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 31 transitions, 165 flow [2024-06-14 12:54:20,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:54:20,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:54:20,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 102 transitions. [2024-06-14 12:54:20,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.265625 [2024-06-14 12:54:20,680 INFO L175 Difference]: Start difference. First operand has 59 places, 23 transitions, 117 flow. Second operand 12 states and 102 transitions. [2024-06-14 12:54:20,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 31 transitions, 165 flow [2024-06-14 12:54:20,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 127 flow, removed 1 selfloop flow, removed 19 redundant places. [2024-06-14 12:54:20,681 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-06-14 12:54:20,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-06-14 12:54:20,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-14 12:54:20,681 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-06-14 12:54:20,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:54:20,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 12:54:20,684 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 12:54:20,684 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 12:54:20,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 12:54:20,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-14 12:54:20,685 INFO L445 BasicCegarLoop]: Path program histogram: [42, 31, 19, 19, 18, 17, 15, 10, 7, 6, 6, 5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:54:20,688 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 12:54:20,688 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 12:54:20,692 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 12:54:20,692 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 12:54:20,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 12:54:20 BasicIcfg [2024-06-14 12:54:20,693 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 12:54:20,693 INFO L158 Benchmark]: Toolchain (without parser) took 532963.23ms. Allocated memory was 153.1MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 116.9MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 337.6MB. Max. memory is 16.1GB. [2024-06-14 12:54:20,694 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:54:20,694 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 153.1MB. Free memory is still 123.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:54:20,694 INFO L158 Benchmark]: CACSL2BoogieTranslator took 701.16ms. Allocated memory is still 153.1MB. Free memory was 116.9MB in the beginning and 81.4MB in the end (delta: 35.5MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-14 12:54:20,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.99ms. Allocated memory is still 153.1MB. Free memory was 81.4MB in the beginning and 78.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:54:20,695 INFO L158 Benchmark]: Boogie Preprocessor took 55.29ms. Allocated memory is still 153.1MB. Free memory was 78.6MB in the beginning and 75.1MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 12:54:20,695 INFO L158 Benchmark]: RCFGBuilder took 801.96ms. Allocated memory is still 153.1MB. Free memory was 74.4MB in the beginning and 92.0MB in the end (delta: -17.6MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2024-06-14 12:54:20,695 INFO L158 Benchmark]: TraceAbstraction took 531322.76ms. Allocated memory was 153.1MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 92.0MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 311.2MB. Max. memory is 16.1GB. [2024-06-14 12:54:20,697 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.11ms. Allocated memory is still 153.1MB. Free memory is still 123.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 701.16ms. Allocated memory is still 153.1MB. Free memory was 116.9MB in the beginning and 81.4MB in the end (delta: 35.5MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.99ms. Allocated memory is still 153.1MB. Free memory was 81.4MB in the beginning and 78.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.29ms. Allocated memory is still 153.1MB. Free memory was 78.6MB in the beginning and 75.1MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 801.96ms. Allocated memory is still 153.1MB. Free memory was 74.4MB in the beginning and 92.0MB in the end (delta: -17.6MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. * TraceAbstraction took 531322.76ms. Allocated memory was 153.1MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 92.0MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 311.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 834]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 835]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 531.2s, OverallIterations: 222, TraceHistogramMax: 1, PathProgramHistogramMax: 42, EmptinessCheckTime: 0.0s, AutomataDifference: 207.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15041 SdHoareTripleChecker+Valid, 76.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13023 mSDsluCounter, 5099 SdHoareTripleChecker+Invalid, 66.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4488 mSDsCounter, 3766 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 114428 IncrementalHoareTripleChecker+Invalid, 118194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3766 mSolverCounterUnsat, 611 mSDtfsCounter, 114428 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2718 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 2694 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6258 ImplicationChecksByTransitivity, 92.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3052occurred in iteration=103, InterpolantAutomatonStates: 2297, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 319.6s InterpolantComputationTime, 3916 NumberOfCodeBlocks, 3916 NumberOfCodeBlocksAsserted, 222 NumberOfCheckSat, 3694 ConstructedInterpolants, 0 QuantifiedInterpolants, 183689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 222 InterpolantComputations, 222 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! [2024-06-14 12:54:20,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE