./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp3x3-opt.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/weaver/bench-exp3x3-opt.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp3x3-opt.wvr.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 --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:46:01,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:46:01,343 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:46:01,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:46:01,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:46:01,399 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:46:01,400 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:46:01,401 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:46:01,401 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:46:01,405 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:46:01,405 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:46:01,406 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:46:01,407 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:46:01,408 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:46:01,408 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:46:01,409 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:46:01,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:46:01,409 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:46:01,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:46:01,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:46:01,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:46:01,410 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:46:01,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:46:01,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:46:01,411 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:46:01,411 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:46:01,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:46:01,412 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:46:01,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:46:01,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:46:01,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:46:01,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:46:01,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:46:01,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:46:01,415 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:46:01,415 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:46:01,415 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:46:01,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:46:01,416 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:46:01,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:46:01,425 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:46:01,425 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:46:01,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:46:01,426 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:46:01,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:46:01,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:46:01,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:46:01,687 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:46:01,688 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:46:01,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp3x3-opt.wvr.yml/witness.yml [2024-01-31 16:46:01,820 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:46:01,820 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:46:01,822 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2024-01-31 16:46:03,040 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:46:03,257 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:46:03,257 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2024-01-31 16:46:03,264 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f54f03909/9ed5bbf48dad496697f229800bd6230f/FLAGda39f8cad [2024-01-31 16:46:03,276 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f54f03909/9ed5bbf48dad496697f229800bd6230f [2024-01-31 16:46:03,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:46:03,278 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:46:03,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:46:03,279 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:46:03,284 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:46:03,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:46:01" (1/2) ... [2024-01-31 16:46:03,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7236c5c8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:03, skipping insertion in model container [2024-01-31 16:46:03,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:46:01" (1/2) ... [2024-01-31 16:46:03,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24c545a4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:03, skipping insertion in model container [2024-01-31 16:46:03,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:46:03" (2/2) ... [2024-01-31 16:46:03,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7236c5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03, skipping insertion in model container [2024-01-31 16:46:03,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:46:03" (2/2) ... [2024-01-31 16:46:03,288 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:46:03,314 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:46:03,337 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:46:03,528 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2024-01-31 16:46:03,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:46:03,542 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:46:03,568 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2024-01-31 16:46:03,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:46:03,584 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:46:03,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03 WrapperNode [2024-01-31 16:46:03,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:46:03,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:46:03,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:46:03,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:46:03,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03" (1/1) ... [2024-01-31 16:46:03,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03" (1/1) ... [2024-01-31 16:46:03,636 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 131 [2024-01-31 16:46:03,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:46:03,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:46:03,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:46:03,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:46:03,649 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03" (1/1) ... [2024-01-31 16:46:03,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03" (1/1) ... [2024-01-31 16:46:03,666 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03" (1/1) ... [2024-01-31 16:46:03,699 INFO L175 MemorySlicer]: Split 14 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 2, 2]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 1, 1]. [2024-01-31 16:46:03,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03" (1/1) ... [2024-01-31 16:46:03,701 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03" (1/1) ... [2024-01-31 16:46:03,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03" (1/1) ... [2024-01-31 16:46:03,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03" (1/1) ... [2024-01-31 16:46:03,726 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03" (1/1) ... [2024-01-31 16:46:03,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03" (1/1) ... [2024-01-31 16:46:03,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:46:03,741 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:46:03,741 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:46:03,741 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:46:03,742 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03" (1/1) ... [2024-01-31 16:46:03,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:46:03,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:03,773 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) [2024-01-31 16:46:03,799 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 [2024-01-31 16:46:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:46:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:46:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:46:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:46:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:46:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:46:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:46:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 16:46:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-01-31 16:46:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:46:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:46:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:46:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:46:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:46:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 16:46:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-01-31 16:46:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:46:03,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:46:03,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:46:03,823 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:46:03,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:46:03,823 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:46:03,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 16:46:03,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 16:46:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:46:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:46:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:46:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:46:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:46:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 16:46:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-01-31 16:46:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-01-31 16:46:03,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-01-31 16:46:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-01-31 16:46:03,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-01-31 16:46:03,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:46:03,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:46:03,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:46:03,830 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:46:03,972 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:46:03,975 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:46:04,242 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:46:04,242 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:46:04,531 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:46:04,531 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-31 16:46:04,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:46:04 BoogieIcfgContainer [2024-01-31 16:46:04,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:46:04,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:46:04,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:46:04,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:46:04,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:46:01" (1/4) ... [2024-01-31 16:46:04,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59dad011 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:46:04, skipping insertion in model container [2024-01-31 16:46:04,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:46:03" (2/4) ... [2024-01-31 16:46:04,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59dad011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:46:04, skipping insertion in model container [2024-01-31 16:46:04,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:03" (3/4) ... [2024-01-31 16:46:04,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59dad011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:46:04, skipping insertion in model container [2024-01-31 16:46:04,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:46:04" (4/4) ... [2024-01-31 16:46:04,543 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2024-01-31 16:46:04,560 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:46:04,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:46:04,561 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:46:04,629 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-01-31 16:46:04,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 144 flow [2024-01-31 16:46:04,728 INFO L124 PetriNetUnfolderBase]: 6/45 cut-off events. [2024-01-31 16:46:04,729 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 16:46:04,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 45 events. 6/45 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-01-31 16:46:04,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 144 flow [2024-01-31 16:46:04,737 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 124 flow [2024-01-31 16:46:04,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:46:04,764 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;@8c02b44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:46:04,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-31 16:46:04,793 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:46:04,794 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2024-01-31 16:46:04,794 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 16:46:04,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:04,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:04,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:46:04,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:04,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1009835643, now seen corresponding path program 1 times [2024-01-31 16:46:04,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:04,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594585567] [2024-01-31 16:46:04,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:04,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:05,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:05,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594585567] [2024-01-31 16:46:05,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594585567] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:05,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:05,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:46:05,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372315103] [2024-01-31 16:46:05,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:05,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:46:05,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:05,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:46:05,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:46:05,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:05,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:05,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:05,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:05,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:08,014 INFO L124 PetriNetUnfolderBase]: 24533/28583 cut-off events. [2024-01-31 16:46:08,014 INFO L125 PetriNetUnfolderBase]: For 1331/1331 co-relation queries the response was YES. [2024-01-31 16:46:08,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58276 conditions, 28583 events. 24533/28583 cut-off events. For 1331/1331 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 101035 event pairs, 4426 based on Foata normal form. 1/15580 useless extension candidates. Maximal degree in co-relation 44796. Up to 18741 conditions per place. [2024-01-31 16:46:08,271 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 59 selfloop transitions, 3 changer transitions 1/70 dead transitions. [2024-01-31 16:46:08,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 70 transitions, 323 flow [2024-01-31 16:46:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:46:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:46:08,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-01-31 16:46:08,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.673202614379085 [2024-01-31 16:46:08,289 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 124 flow. Second operand 3 states and 103 transitions. [2024-01-31 16:46:08,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 70 transitions, 323 flow [2024-01-31 16:46:08,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 285 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-01-31 16:46:08,339 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 119 flow [2024-01-31 16:46:08,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2024-01-31 16:46:08,345 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2024-01-31 16:46:08,346 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 119 flow [2024-01-31 16:46:08,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:08,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:08,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:08,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:46:08,347 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:46:08,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:08,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1685349170, now seen corresponding path program 1 times [2024-01-31 16:46:08,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:08,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548968558] [2024-01-31 16:46:08,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:08,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:08,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:08,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548968558] [2024-01-31 16:46:08,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548968558] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:08,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:08,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:46:08,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607448018] [2024-01-31 16:46:08,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:08,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:46:08,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:08,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:46:08,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:46:08,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:08,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:08,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:08,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:08,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:11,144 INFO L124 PetriNetUnfolderBase]: 33457/39075 cut-off events. [2024-01-31 16:46:11,149 INFO L125 PetriNetUnfolderBase]: For 5276/5276 co-relation queries the response was YES. [2024-01-31 16:46:11,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85625 conditions, 39075 events. 33457/39075 cut-off events. For 5276/5276 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 148216 event pairs, 5731 based on Foata normal form. 1/26720 useless extension candidates. Maximal degree in co-relation 26650. Up to 27052 conditions per place. [2024-01-31 16:46:11,342 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 63 selfloop transitions, 3 changer transitions 9/82 dead transitions. [2024-01-31 16:46:11,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 82 transitions, 362 flow [2024-01-31 16:46:11,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:46:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:46:11,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-01-31 16:46:11,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7254901960784313 [2024-01-31 16:46:11,347 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 119 flow. Second operand 3 states and 111 transitions. [2024-01-31 16:46:11,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 82 transitions, 362 flow [2024-01-31 16:46:11,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 82 transitions, 357 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:11,351 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 135 flow [2024-01-31 16:46:11,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2024-01-31 16:46:11,352 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -7 predicate places. [2024-01-31 16:46:11,352 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 135 flow [2024-01-31 16:46:11,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:11,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:11,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:11,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:46:11,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:46:11,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:11,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2075634054, now seen corresponding path program 1 times [2024-01-31 16:46:11,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:11,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486921282] [2024-01-31 16:46:11,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:11,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:11,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:11,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:11,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486921282] [2024-01-31 16:46:11,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486921282] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:11,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:11,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:46:11,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129670619] [2024-01-31 16:46:11,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:11,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:46:11,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:11,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:46:11,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:46:11,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:11,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:11,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:11,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:11,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:13,976 INFO L124 PetriNetUnfolderBase]: 42571/50180 cut-off events. [2024-01-31 16:46:13,977 INFO L125 PetriNetUnfolderBase]: For 14213/14213 co-relation queries the response was YES. [2024-01-31 16:46:14,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116808 conditions, 50180 events. 42571/50180 cut-off events. For 14213/14213 co-relation queries the response was YES. Maximal size of possible extension queue 1681. Compared 201565 event pairs, 6874 based on Foata normal form. 1/41482 useless extension candidates. Maximal degree in co-relation 48426. Up to 36442 conditions per place. [2024-01-31 16:46:14,220 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 67 selfloop transitions, 3 changer transitions 5/82 dead transitions. [2024-01-31 16:46:14,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 82 transitions, 380 flow [2024-01-31 16:46:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:46:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:46:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-01-31 16:46:14,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6993464052287581 [2024-01-31 16:46:14,226 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 135 flow. Second operand 3 states and 107 transitions. [2024-01-31 16:46:14,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 82 transitions, 380 flow [2024-01-31 16:46:14,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 82 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:14,231 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 151 flow [2024-01-31 16:46:14,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2024-01-31 16:46:14,233 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -5 predicate places. [2024-01-31 16:46:14,233 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 151 flow [2024-01-31 16:46:14,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:14,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:14,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:14,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:46:14,234 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:46:14,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:14,235 INFO L85 PathProgramCache]: Analyzing trace with hash -909273287, now seen corresponding path program 1 times [2024-01-31 16:46:14,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:14,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154119202] [2024-01-31 16:46:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:14,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:14,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:14,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:14,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154119202] [2024-01-31 16:46:14,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154119202] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:14,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076839460] [2024-01-31 16:46:14,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:14,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:14,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:14,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:14,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 16:46:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:14,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 16:46:14,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:14,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:14,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076839460] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:46:14,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:46:14,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-01-31 16:46:14,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649176955] [2024-01-31 16:46:14,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:46:14,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:46:14,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:14,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:46:14,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:46:14,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:14,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 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) [2024-01-31 16:46:14,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:14,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:14,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:18,118 INFO L124 PetriNetUnfolderBase]: 48377/57563 cut-off events. [2024-01-31 16:46:18,118 INFO L125 PetriNetUnfolderBase]: For 22080/22080 co-relation queries the response was YES. [2024-01-31 16:46:18,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144391 conditions, 57563 events. 48377/57563 cut-off events. For 22080/22080 co-relation queries the response was YES. Maximal size of possible extension queue 1926. Compared 247996 event pairs, 7315 based on Foata normal form. 1125/58288 useless extension candidates. Maximal degree in co-relation 46330. Up to 26288 conditions per place. [2024-01-31 16:46:18,372 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 113 selfloop transitions, 6 changer transitions 19/145 dead transitions. [2024-01-31 16:46:18,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 145 transitions, 703 flow [2024-01-31 16:46:18,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:18,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-01-31 16:46:18,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7450980392156863 [2024-01-31 16:46:18,380 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 151 flow. Second operand 5 states and 190 transitions. [2024-01-31 16:46:18,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 145 transitions, 703 flow [2024-01-31 16:46:18,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 145 transitions, 694 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:18,387 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 185 flow [2024-01-31 16:46:18,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-01-31 16:46:18,389 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2024-01-31 16:46:18,389 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 185 flow [2024-01-31 16:46:18,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 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) [2024-01-31 16:46:18,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:18,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:18,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 16:46:18,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:18,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:46:18,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:18,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2023366673, now seen corresponding path program 1 times [2024-01-31 16:46:18,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:18,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878191705] [2024-01-31 16:46:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:18,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:18,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:18,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878191705] [2024-01-31 16:46:18,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878191705] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:18,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:18,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:18,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135990662] [2024-01-31 16:46:18,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:18,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:18,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:18,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:18,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:18,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:18,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:18,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:18,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:18,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:21,856 INFO L124 PetriNetUnfolderBase]: 48167/57238 cut-off events. [2024-01-31 16:46:21,856 INFO L125 PetriNetUnfolderBase]: For 35731/35731 co-relation queries the response was YES. [2024-01-31 16:46:21,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155080 conditions, 57238 events. 48167/57238 cut-off events. For 35731/35731 co-relation queries the response was YES. Maximal size of possible extension queue 1888. Compared 244346 event pairs, 1126 based on Foata normal form. 706/57844 useless extension candidates. Maximal degree in co-relation 56050. Up to 22511 conditions per place. [2024-01-31 16:46:22,085 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 90 selfloop transitions, 4 changer transitions 40/141 dead transitions. [2024-01-31 16:46:22,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 141 transitions, 723 flow [2024-01-31 16:46:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:22,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2024-01-31 16:46:22,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2024-01-31 16:46:22,086 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 185 flow. Second operand 5 states and 180 transitions. [2024-01-31 16:46:22,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 141 transitions, 723 flow [2024-01-31 16:46:22,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 141 transitions, 717 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:22,355 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 193 flow [2024-01-31 16:46:22,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-01-31 16:46:22,356 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2024-01-31 16:46:22,356 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 193 flow [2024-01-31 16:46:22,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:22,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:22,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:22,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:46:22,357 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:46:22,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:22,358 INFO L85 PathProgramCache]: Analyzing trace with hash -43282031, now seen corresponding path program 2 times [2024-01-31 16:46:22,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:22,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757866528] [2024-01-31 16:46:22,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:22,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:22,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:22,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757866528] [2024-01-31 16:46:22,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757866528] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:22,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:22,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:22,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544622287] [2024-01-31 16:46:22,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:22,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:22,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:22,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:22,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:22,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:22,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:22,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:22,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:22,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:24,421 INFO L124 PetriNetUnfolderBase]: 32115/38228 cut-off events. [2024-01-31 16:46:24,421 INFO L125 PetriNetUnfolderBase]: For 41162/41166 co-relation queries the response was YES. [2024-01-31 16:46:24,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111974 conditions, 38228 events. 32115/38228 cut-off events. For 41162/41166 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 156003 event pairs, 4379 based on Foata normal form. 830/38684 useless extension candidates. Maximal degree in co-relation 54571. Up to 18656 conditions per place. [2024-01-31 16:46:24,809 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 125 selfloop transitions, 6 changer transitions 11/149 dead transitions. [2024-01-31 16:46:24,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 149 transitions, 844 flow [2024-01-31 16:46:24,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:24,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2024-01-31 16:46:24,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7137254901960784 [2024-01-31 16:46:24,810 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 193 flow. Second operand 5 states and 182 transitions. [2024-01-31 16:46:24,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 149 transitions, 844 flow [2024-01-31 16:46:24,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 149 transitions, 831 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:24,820 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 223 flow [2024-01-31 16:46:24,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-01-31 16:46:24,821 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2024-01-31 16:46:24,821 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 223 flow [2024-01-31 16:46:24,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:24,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:24,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:24,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:46:24,822 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:46:24,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:24,823 INFO L85 PathProgramCache]: Analyzing trace with hash 520398830, now seen corresponding path program 1 times [2024-01-31 16:46:24,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:24,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991104031] [2024-01-31 16:46:24,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:24,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:24,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:24,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:24,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991104031] [2024-01-31 16:46:24,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991104031] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:24,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198741121] [2024-01-31 16:46:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:24,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:24,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:24,938 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:24,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 16:46:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:25,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 16:46:25,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:25,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:25,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198741121] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:46:25,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:46:25,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-01-31 16:46:25,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795296931] [2024-01-31 16:46:25,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:46:25,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:46:25,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:25,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:46:25,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:46:25,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:25,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:25,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:25,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:25,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:27,960 INFO L124 PetriNetUnfolderBase]: 31003/36989 cut-off events. [2024-01-31 16:46:27,960 INFO L125 PetriNetUnfolderBase]: For 47205/47205 co-relation queries the response was YES. [2024-01-31 16:46:28,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119853 conditions, 36989 events. 31003/36989 cut-off events. For 47205/47205 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 149514 event pairs, 105 based on Foata normal form. 1398/38375 useless extension candidates. Maximal degree in co-relation 51711. Up to 11319 conditions per place. [2024-01-31 16:46:28,128 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 239 selfloop transitions, 28 changer transitions 100/374 dead transitions. [2024-01-31 16:46:28,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 374 transitions, 2147 flow [2024-01-31 16:46:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-01-31 16:46:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-01-31 16:46:28,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 540 transitions. [2024-01-31 16:46:28,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228373702422145 [2024-01-31 16:46:28,131 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 223 flow. Second operand 17 states and 540 transitions. [2024-01-31 16:46:28,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 374 transitions, 2147 flow [2024-01-31 16:46:28,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 374 transitions, 2126 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:28,378 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 486 flow [2024-01-31 16:46:28,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=486, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2024-01-31 16:46:28,379 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 33 predicate places. [2024-01-31 16:46:28,379 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 486 flow [2024-01-31 16:46:28,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:28,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:28,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:28,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 16:46:28,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-01-31 16:46:28,596 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:46:28,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:28,596 INFO L85 PathProgramCache]: Analyzing trace with hash 689076605, now seen corresponding path program 1 times [2024-01-31 16:46:28,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:28,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178310712] [2024-01-31 16:46:28,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:28,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:46:28,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:28,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178310712] [2024-01-31 16:46:28,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178310712] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:28,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:28,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:28,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762683063] [2024-01-31 16:46:28,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:28,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:28,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:28,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:28,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:28,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:28,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 486 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:28,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:28,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:28,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:30,774 INFO L124 PetriNetUnfolderBase]: 22581/27055 cut-off events. [2024-01-31 16:46:30,775 INFO L125 PetriNetUnfolderBase]: For 137539/137549 co-relation queries the response was YES. [2024-01-31 16:46:30,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112661 conditions, 27055 events. 22581/27055 cut-off events. For 137539/137549 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 105783 event pairs, 3291 based on Foata normal form. 489/27129 useless extension candidates. Maximal degree in co-relation 104237. Up to 10761 conditions per place. [2024-01-31 16:46:30,919 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 233 selfloop transitions, 6 changer transitions 3/249 dead transitions. [2024-01-31 16:46:30,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 249 transitions, 2193 flow [2024-01-31 16:46:30,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-01-31 16:46:30,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2024-01-31 16:46:30,921 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 486 flow. Second operand 5 states and 174 transitions. [2024-01-31 16:46:30,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 249 transitions, 2193 flow [2024-01-31 16:46:31,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 249 transitions, 2035 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-01-31 16:46:31,029 INFO L231 Difference]: Finished difference. Result has 88 places, 83 transitions, 479 flow [2024-01-31 16:46:31,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=479, PETRI_PLACES=88, PETRI_TRANSITIONS=83} [2024-01-31 16:46:31,030 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2024-01-31 16:46:31,030 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 83 transitions, 479 flow [2024-01-31 16:46:31,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:31,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:31,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:31,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:46:31,031 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:46:31,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:31,031 INFO L85 PathProgramCache]: Analyzing trace with hash 443461006, now seen corresponding path program 1 times [2024-01-31 16:46:31,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:31,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771254032] [2024-01-31 16:46:31,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:31,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:31,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:31,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771254032] [2024-01-31 16:46:31,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771254032] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:31,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680117635] [2024-01-31 16:46:31,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:31,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:31,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:31,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:31,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 16:46:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:31,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 16:46:31,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:31,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:31,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:31,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680117635] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:46:31,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:46:31,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-01-31 16:46:31,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858402096] [2024-01-31 16:46:31,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:46:31,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:46:31,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:31,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:46:31,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:46:31,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:31,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 479 flow. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:31,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:31,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:31,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:34,191 INFO L124 PetriNetUnfolderBase]: 21429/25756 cut-off events. [2024-01-31 16:46:34,192 INFO L125 PetriNetUnfolderBase]: For 113585/113595 co-relation queries the response was YES. [2024-01-31 16:46:34,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109945 conditions, 25756 events. 21429/25756 cut-off events. For 113585/113595 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 97542 event pairs, 86 based on Foata normal form. 1154/26867 useless extension candidates. Maximal degree in co-relation 99885. Up to 7443 conditions per place. [2024-01-31 16:46:34,341 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 338 selfloop transitions, 55 changer transitions 138/538 dead transitions. [2024-01-31 16:46:34,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 538 transitions, 4385 flow [2024-01-31 16:46:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-01-31 16:46:34,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-01-31 16:46:34,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 536 transitions. [2024-01-31 16:46:34,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6182237600922722 [2024-01-31 16:46:34,344 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 479 flow. Second operand 17 states and 536 transitions. [2024-01-31 16:46:34,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 538 transitions, 4385 flow [2024-01-31 16:46:34,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 538 transitions, 4364 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:34,609 INFO L231 Difference]: Finished difference. Result has 113 places, 128 transitions, 1038 flow [2024-01-31 16:46:34,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1038, PETRI_PLACES=113, PETRI_TRANSITIONS=128} [2024-01-31 16:46:34,610 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 56 predicate places. [2024-01-31 16:46:34,610 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 128 transitions, 1038 flow [2024-01-31 16:46:34,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:34,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:34,611 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:34,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 16:46:34,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:34,825 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:46:34,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:34,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1636830619, now seen corresponding path program 1 times [2024-01-31 16:46:34,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:34,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643700295] [2024-01-31 16:46:34,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:34,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 16:46:34,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:34,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643700295] [2024-01-31 16:46:34,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643700295] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:34,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:34,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:34,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535750038] [2024-01-31 16:46:34,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:34,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:34,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:34,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:34,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:34,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:34,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 128 transitions, 1038 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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) [2024-01-31 16:46:34,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:34,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:34,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:36,737 INFO L124 PetriNetUnfolderBase]: 14584/17618 cut-off events. [2024-01-31 16:46:36,738 INFO L125 PetriNetUnfolderBase]: For 142681/142718 co-relation queries the response was YES. [2024-01-31 16:46:36,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90282 conditions, 17618 events. 14584/17618 cut-off events. For 142681/142718 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 64950 event pairs, 856 based on Foata normal form. 487/17995 useless extension candidates. Maximal degree in co-relation 82668. Up to 11829 conditions per place. [2024-01-31 16:46:36,854 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 271 selfloop transitions, 15 changer transitions 0/293 dead transitions. [2024-01-31 16:46:36,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 293 transitions, 2982 flow [2024-01-31 16:46:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:36,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-01-31 16:46:36,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6392156862745098 [2024-01-31 16:46:36,856 INFO L175 Difference]: Start difference. First operand has 113 places, 128 transitions, 1038 flow. Second operand 5 states and 163 transitions. [2024-01-31 16:46:36,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 293 transitions, 2982 flow [2024-01-31 16:46:37,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 293 transitions, 2831 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-01-31 16:46:37,178 INFO L231 Difference]: Finished difference. Result has 112 places, 134 transitions, 1061 flow [2024-01-31 16:46:37,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1061, PETRI_PLACES=112, PETRI_TRANSITIONS=134} [2024-01-31 16:46:37,180 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 55 predicate places. [2024-01-31 16:46:37,180 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 134 transitions, 1061 flow [2024-01-31 16:46:37,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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) [2024-01-31 16:46:37,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:37,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:37,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:46:37,180 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:46:37,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:37,181 INFO L85 PathProgramCache]: Analyzing trace with hash -660782776, now seen corresponding path program 1 times [2024-01-31 16:46:37,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:37,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349937031] [2024-01-31 16:46:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:37,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:46:37,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:37,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349937031] [2024-01-31 16:46:37,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349937031] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:37,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835635833] [2024-01-31 16:46:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:37,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:37,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:37,769 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:37,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 16:46:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:38,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-31 16:46:38,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:46:52,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:46:54,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835635833] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:46:54,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:46:54,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 4] total 14 [2024-01-31 16:46:54,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35293671] [2024-01-31 16:46:54,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:46:54,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-31 16:46:54,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:54,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-31 16:46:54,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2024-01-31 16:46:54,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:54,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 134 transitions, 1061 flow. Second operand has 15 states, 15 states have (on average 20.4) internal successors, (306), 15 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:54,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:54,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:54,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:05,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:47:26,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:11,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:15,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:19,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:24,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:28,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:30,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:34,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:37,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:49:02,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:49:25,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:49:29,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:49:57,371 INFO L124 PetriNetUnfolderBase]: 83253/101778 cut-off events. [2024-01-31 16:49:57,371 INFO L125 PetriNetUnfolderBase]: For 733586/733592 co-relation queries the response was YES. [2024-01-31 16:49:57,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525242 conditions, 101778 events. 83253/101778 cut-off events. For 733586/733592 co-relation queries the response was YES. Maximal size of possible extension queue 2931. Compared 486060 event pairs, 1621 based on Foata normal form. 1500/103263 useless extension candidates. Maximal degree in co-relation 460733. Up to 19549 conditions per place. [2024-01-31 16:49:58,208 INFO L140 encePairwiseOnDemand]: 25/51 looper letters, 986 selfloop transitions, 266 changer transitions 834/2093 dead transitions. [2024-01-31 16:49:58,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 2093 transitions, 18750 flow [2024-01-31 16:49:58,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-01-31 16:49:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-01-31 16:49:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 1857 transitions. [2024-01-31 16:49:58,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6870144284128746 [2024-01-31 16:49:58,214 INFO L175 Difference]: Start difference. First operand has 112 places, 134 transitions, 1061 flow. Second operand 53 states and 1857 transitions. [2024-01-31 16:49:58,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 2093 transitions, 18750 flow [2024-01-31 16:50:19,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 2093 transitions, 18493 flow, removed 72 selfloop flow, removed 1 redundant places. [2024-01-31 16:50:19,868 INFO L231 Difference]: Finished difference. Result has 212 places, 412 transitions, 4541 flow [2024-01-31 16:50:19,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=4541, PETRI_PLACES=212, PETRI_TRANSITIONS=412} [2024-01-31 16:50:19,869 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 155 predicate places. [2024-01-31 16:50:19,869 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 412 transitions, 4541 flow [2024-01-31 16:50:19,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.4) internal successors, (306), 15 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:19,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:19,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:19,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 16:50:20,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:20,075 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:50:20,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:20,076 INFO L85 PathProgramCache]: Analyzing trace with hash 955317062, now seen corresponding path program 2 times [2024-01-31 16:50:20,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:20,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204588100] [2024-01-31 16:50:20,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:20,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:50:20,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:20,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204588100] [2024-01-31 16:50:20,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204588100] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:50:20,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099515613] [2024-01-31 16:50:20,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:50:20,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:20,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:50:20,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:50:20,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-31 16:50:21,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:50:21,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:50:21,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 16:50:21,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:50:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:50:23,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:50:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:50:24,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099515613] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:50:24,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:50:24,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-01-31 16:50:24,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55435201] [2024-01-31 16:50:24,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:50:24,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 16:50:24,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:24,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 16:50:24,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-01-31 16:50:24,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:50:24,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 412 transitions, 4541 flow. Second operand has 18 states, 18 states have (on average 19.166666666666668) internal successors, (345), 18 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:24,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:24,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:50:24,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand