/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-time-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 12:43:00,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 12:43:00,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 12:43:00,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 12:43:00,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 12:43:00,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 12:43:00,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 12:43:00,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 12:43:00,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 12:43:00,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 12:43:00,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 12:43:00,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 12:43:00,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 12:43:00,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 12:43:00,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 12:43:00,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 12:43:00,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 12:43:00,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 12:43:00,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 12:43:00,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 12:43:00,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 12:43:00,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 12:43:00,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 12:43:00,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 12:43:00,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 12:43:00,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 12:43:00,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 12:43:00,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 12:43:00,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 12:43:00,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 12:43:00,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 12:43:00,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 12:43:00,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 12:43:00,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 12:43:00,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 12:43:00,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 12:43:00,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 12:43:00,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 12:43:00,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 12:43:00,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 12:43:00,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 12:43:00,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-12 12:43:00,880 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 12:43:00,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 12:43:00,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 12:43:00,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 12:43:00,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 12:43:00,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 12:43:00,882 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 12:43:00,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 12:43:00,882 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 12:43:00,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 12:43:00,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 12:43:00,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 12:43:00,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 12:43:00,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 12:43:00,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 12:43:00,882 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 12:43:00,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 12:43:00,883 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 12:43:00,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 12:43:00,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 12:43:00,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 12:43:00,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 12:43:00,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 12:43:00,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:43:00,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 12:43:00,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 12:43:00,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 12:43:00,883 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 12:43:00,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 12:43:00,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 12:43:00,884 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 12:43:00,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 12:43:01,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 12:43:01,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 12:43:01,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 12:43:01,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 12:43:01,186 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 12:43:01,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-time-trans.wvr.c [2022-12-12 12:43:02,125 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 12:43:02,323 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 12:43:02,324 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-trans.wvr.c [2022-12-12 12:43:02,340 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a20cf764/bb830efffbde434994180d4630fad1f4/FLAG93572b617 [2022-12-12 12:43:02,351 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a20cf764/bb830efffbde434994180d4630fad1f4 [2022-12-12 12:43:02,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 12:43:02,354 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 12:43:02,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 12:43:02,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 12:43:02,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 12:43:02,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:43:02" (1/1) ... [2022-12-12 12:43:02,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64776fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:43:02, skipping insertion in model container [2022-12-12 12:43:02,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:43:02" (1/1) ... [2022-12-12 12:43:02,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 12:43:02,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 12:43:02,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:43:02,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:43:02,531 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:43:02,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:43:02,533 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:43:02,534 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:43:02,552 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-trans.wvr.c[2836,2849] [2022-12-12 12:43:02,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:43:02,571 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 12:43:02,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:43:02,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:43:02,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:43:02,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:43:02,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:43:02,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:43:02,607 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-trans.wvr.c[2836,2849] [2022-12-12 12:43:02,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:43:02,620 INFO L208 MainTranslator]: Completed translation [2022-12-12 12:43:02,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:43:02 WrapperNode [2022-12-12 12:43:02,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 12:43:02,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 12:43:02,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 12:43:02,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 12:43:02,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:43:02" (1/1) ... [2022-12-12 12:43:02,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:43:02" (1/1) ... [2022-12-12 12:43:02,672 INFO L138 Inliner]: procedures = 23, calls = 39, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 214 [2022-12-12 12:43:02,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 12:43:02,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 12:43:02,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 12:43:02,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 12:43:02,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:43:02" (1/1) ... [2022-12-12 12:43:02,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:43:02" (1/1) ... [2022-12-12 12:43:02,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:43:02" (1/1) ... [2022-12-12 12:43:02,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:43:02" (1/1) ... [2022-12-12 12:43:02,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:43:02" (1/1) ... [2022-12-12 12:43:02,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:43:02" (1/1) ... [2022-12-12 12:43:02,702 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:43:02" (1/1) ... [2022-12-12 12:43:02,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:43:02" (1/1) ... [2022-12-12 12:43:02,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 12:43:02,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 12:43:02,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 12:43:02,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 12:43:02,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:43:02" (1/1) ... [2022-12-12 12:43:02,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:43:02,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:43:02,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 12:43:02,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 12:43:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 12:43:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 12:43:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 12:43:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 12:43:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 12:43:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 12:43:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 12:43:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 12:43:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 12:43:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 12:43:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 12:43:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 12:43:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 12:43:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 12:43:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 12:43:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 12:43:02,780 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 12:43:02,858 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 12:43:02,859 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 12:43:03,175 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 12:43:03,412 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 12:43:03,412 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 12:43:03,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:43:03 BoogieIcfgContainer [2022-12-12 12:43:03,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 12:43:03,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 12:43:03,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 12:43:03,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 12:43:03,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:43:02" (1/3) ... [2022-12-12 12:43:03,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6389d604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:43:03, skipping insertion in model container [2022-12-12 12:43:03,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:43:02" (2/3) ... [2022-12-12 12:43:03,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6389d604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:43:03, skipping insertion in model container [2022-12-12 12:43:03,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:43:03" (3/3) ... [2022-12-12 12:43:03,427 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-time-trans.wvr.c [2022-12-12 12:43:03,440 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 12:43:03,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 12:43:03,441 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 12:43:03,491 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 12:43:03,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 105 transitions, 234 flow [2022-12-12 12:43:03,581 INFO L130 PetriNetUnfolder]: 1/102 cut-off events. [2022-12-12 12:43:03,582 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 12:43:03,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 1/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2022-12-12 12:43:03,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 105 transitions, 234 flow [2022-12-12 12:43:03,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 92 transitions, 202 flow [2022-12-12 12:43:03,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 12:43:03,609 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=LoopsAndPotentialCycles, 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;@72155753, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 12:43:03,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 12:43:03,656 INFO L130 PetriNetUnfolder]: 1/91 cut-off events. [2022-12-12 12:43:03,656 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 12:43:03,656 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:43:03,657 INFO L214 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, 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, 1, 1] [2022-12-12 12:43:03,657 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 1 more)] === [2022-12-12 12:43:03,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:43:03,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1228804642, now seen corresponding path program 1 times [2022-12-12 12:43:03,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:43:03,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589624245] [2022-12-12 12:43:03,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:43:03,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:43:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:43:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:43:04,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:43:04,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589624245] [2022-12-12 12:43:04,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589624245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:43:04,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:43:04,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:43:04,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850228164] [2022-12-12 12:43:04,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:43:04,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:43:04,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:43:04,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:43:04,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:43:04,920 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 105 [2022-12-12 12:43:04,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:04,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:43:04,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 105 [2022-12-12 12:43:04,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:43:05,303 INFO L130 PetriNetUnfolder]: 14/180 cut-off events. [2022-12-12 12:43:05,304 INFO L131 PetriNetUnfolder]: For 49/56 co-relation queries the response was YES. [2022-12-12 12:43:05,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 180 events. 14/180 cut-off events. For 49/56 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 434 event pairs, 7 based on Foata normal form. 5/177 useless extension candidates. Maximal degree in co-relation 129. Up to 37 conditions per place. [2022-12-12 12:43:05,307 INFO L137 encePairwiseOnDemand]: 95/105 looper letters, 38 selfloop transitions, 4 changer transitions 10/111 dead transitions. [2022-12-12 12:43:05,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 111 transitions, 368 flow [2022-12-12 12:43:05,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 12:43:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 12:43:05,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 766 transitions. [2022-12-12 12:43:05,331 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7295238095238096 [2022-12-12 12:43:05,334 INFO L295 CegarLoopForPetriNet]: 101 programPoint places, 9 predicate places. [2022-12-12 12:43:05,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 111 transitions, 368 flow [2022-12-12 12:43:05,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 111 transitions, 304 flow, removed 17 selfloop flow, removed 7 redundant places. [2022-12-12 12:43:05,342 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 111 transitions, 304 flow [2022-12-12 12:43:05,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:05,343 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:43:05,343 INFO L214 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, 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, 1, 1] [2022-12-12 12:43:05,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 12:43:05,343 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 1 more)] === [2022-12-12 12:43:05,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:43:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1119445214, now seen corresponding path program 2 times [2022-12-12 12:43:05,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:43:05,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977790198] [2022-12-12 12:43:05,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:43:05,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:43:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:43:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:43:06,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:43:06,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977790198] [2022-12-12 12:43:06,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977790198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:43:06,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:43:06,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:43:06,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117679036] [2022-12-12 12:43:06,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:43:06,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:43:06,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:43:06,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:43:06,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:43:06,035 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 105 [2022-12-12 12:43:06,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 111 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:06,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:43:06,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 105 [2022-12-12 12:43:06,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:43:06,348 INFO L130 PetriNetUnfolder]: 14/225 cut-off events. [2022-12-12 12:43:06,348 INFO L131 PetriNetUnfolder]: For 86/280 co-relation queries the response was YES. [2022-12-12 12:43:06,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 225 events. 14/225 cut-off events. For 86/280 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 768 event pairs, 1 based on Foata normal form. 11/231 useless extension candidates. Maximal degree in co-relation 68. Up to 34 conditions per place. [2022-12-12 12:43:06,349 INFO L137 encePairwiseOnDemand]: 96/105 looper letters, 48 selfloop transitions, 5 changer transitions 23/135 dead transitions. [2022-12-12 12:43:06,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 135 transitions, 563 flow [2022-12-12 12:43:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 12:43:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 12:43:06,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 764 transitions. [2022-12-12 12:43:06,351 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7276190476190476 [2022-12-12 12:43:06,352 INFO L295 CegarLoopForPetriNet]: 101 programPoint places, 11 predicate places. [2022-12-12 12:43:06,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 135 transitions, 563 flow [2022-12-12 12:43:06,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 135 transitions, 489 flow, removed 36 selfloop flow, removed 1 redundant places. [2022-12-12 12:43:06,354 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 135 transitions, 489 flow [2022-12-12 12:43:06,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:06,355 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:43:06,355 INFO L214 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, 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, 1, 1] [2022-12-12 12:43:06,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 12:43:06,355 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 1 more)] === [2022-12-12 12:43:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:43:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash -623555702, now seen corresponding path program 3 times [2022-12-12 12:43:06,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:43:06,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340125062] [2022-12-12 12:43:06,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:43:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:43:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:43:06,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:43:06,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:43:06,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340125062] [2022-12-12 12:43:06,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340125062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:43:06,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:43:06,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:43:06,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571523084] [2022-12-12 12:43:06,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:43:06,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:43:06,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:43:06,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:43:06,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:43:06,928 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 105 [2022-12-12 12:43:06,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 135 transitions, 489 flow. Second operand has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:06,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:43:06,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 105 [2022-12-12 12:43:06,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:43:07,236 INFO L130 PetriNetUnfolder]: 14/227 cut-off events. [2022-12-12 12:43:07,236 INFO L131 PetriNetUnfolder]: For 158/257 co-relation queries the response was YES. [2022-12-12 12:43:07,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 227 events. 14/227 cut-off events. For 158/257 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 746 event pairs, 0 based on Foata normal form. 15/241 useless extension candidates. Maximal degree in co-relation 58. Up to 37 conditions per place. [2022-12-12 12:43:07,238 INFO L137 encePairwiseOnDemand]: 96/105 looper letters, 42 selfloop transitions, 6 changer transitions 36/143 dead transitions. [2022-12-12 12:43:07,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 143 transitions, 708 flow [2022-12-12 12:43:07,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 12:43:07,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 12:43:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 764 transitions. [2022-12-12 12:43:07,239 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7276190476190476 [2022-12-12 12:43:07,240 INFO L295 CegarLoopForPetriNet]: 101 programPoint places, 19 predicate places. [2022-12-12 12:43:07,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 143 transitions, 708 flow [2022-12-12 12:43:07,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 143 transitions, 616 flow, removed 45 selfloop flow, removed 1 redundant places. [2022-12-12 12:43:07,243 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 143 transitions, 616 flow [2022-12-12 12:43:07,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:07,243 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:43:07,243 INFO L214 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, 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, 1, 1] [2022-12-12 12:43:07,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 12:43:07,243 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 1 more)] === [2022-12-12 12:43:07,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:43:07,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1183319550, now seen corresponding path program 4 times [2022-12-12 12:43:07,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:43:07,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552524864] [2022-12-12 12:43:07,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:43:07,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:43:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:43:07,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:43:07,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:43:07,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552524864] [2022-12-12 12:43:07,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552524864] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:43:07,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:43:07,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:43:07,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121465639] [2022-12-12 12:43:07,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:43:07,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:43:07,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:43:07,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:43:07,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:43:07,778 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 105 [2022-12-12 12:43:07,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 143 transitions, 616 flow. Second operand has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:07,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:43:07,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 105 [2022-12-12 12:43:07,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:43:08,053 INFO L130 PetriNetUnfolder]: 14/221 cut-off events. [2022-12-12 12:43:08,053 INFO L131 PetriNetUnfolder]: For 254/606 co-relation queries the response was YES. [2022-12-12 12:43:08,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 221 events. 14/221 cut-off events. For 254/606 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 722 event pairs, 0 based on Foata normal form. 42/263 useless extension candidates. Maximal degree in co-relation 80. Up to 35 conditions per place. [2022-12-12 12:43:08,054 INFO L137 encePairwiseOnDemand]: 96/105 looper letters, 31 selfloop transitions, 3 changer transitions 49/142 dead transitions. [2022-12-12 12:43:08,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 142 transitions, 774 flow [2022-12-12 12:43:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 12:43:08,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 12:43:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 762 transitions. [2022-12-12 12:43:08,056 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7257142857142858 [2022-12-12 12:43:08,056 INFO L295 CegarLoopForPetriNet]: 101 programPoint places, 27 predicate places. [2022-12-12 12:43:08,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 142 transitions, 774 flow [2022-12-12 12:43:08,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 142 transitions, 630 flow, removed 71 selfloop flow, removed 1 redundant places. [2022-12-12 12:43:08,059 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 142 transitions, 630 flow [2022-12-12 12:43:08,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:08,059 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:43:08,060 INFO L214 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, 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, 1, 1] [2022-12-12 12:43:08,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 12:43:08,060 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 1 more)] === [2022-12-12 12:43:08,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:43:08,060 INFO L85 PathProgramCache]: Analyzing trace with hash 40867190, now seen corresponding path program 5 times [2022-12-12 12:43:08,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:43:08,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109870244] [2022-12-12 12:43:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:43:08,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:43:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:43:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:43:08,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:43:08,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109870244] [2022-12-12 12:43:08,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109870244] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:43:08,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:43:08,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:43:08,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484752098] [2022-12-12 12:43:08,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:43:08,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:43:08,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:43:08,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:43:08,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:43:08,487 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 105 [2022-12-12 12:43:08,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 142 transitions, 630 flow. Second operand has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:08,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:43:08,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 105 [2022-12-12 12:43:08,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:43:08,721 INFO L130 PetriNetUnfolder]: 13/239 cut-off events. [2022-12-12 12:43:08,722 INFO L131 PetriNetUnfolder]: For 263/430 co-relation queries the response was YES. [2022-12-12 12:43:08,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 239 events. 13/239 cut-off events. For 263/430 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 878 event pairs, 0 based on Foata normal form. 22/261 useless extension candidates. Maximal degree in co-relation 90. Up to 39 conditions per place. [2022-12-12 12:43:08,723 INFO L137 encePairwiseOnDemand]: 96/105 looper letters, 28 selfloop transitions, 3 changer transitions 60/150 dead transitions. [2022-12-12 12:43:08,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 150 transitions, 871 flow [2022-12-12 12:43:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 12:43:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 12:43:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 762 transitions. [2022-12-12 12:43:08,725 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7257142857142858 [2022-12-12 12:43:08,725 INFO L295 CegarLoopForPetriNet]: 101 programPoint places, 35 predicate places. [2022-12-12 12:43:08,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 150 transitions, 871 flow [2022-12-12 12:43:08,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 150 transitions, 742 flow, removed 60 selfloop flow, removed 2 redundant places. [2022-12-12 12:43:08,728 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 150 transitions, 742 flow [2022-12-12 12:43:08,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:08,728 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:43:08,729 INFO L214 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, 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, 1, 1] [2022-12-12 12:43:08,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 12:43:08,729 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 1 more)] === [2022-12-12 12:43:08,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:43:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash -478970638, now seen corresponding path program 6 times [2022-12-12 12:43:08,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:43:08,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922253758] [2022-12-12 12:43:08,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:43:08,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:43:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:43:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:43:09,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:43:09,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922253758] [2022-12-12 12:43:09,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922253758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:43:09,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:43:09,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:43:09,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826600416] [2022-12-12 12:43:09,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:43:09,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:43:09,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:43:09,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:43:09,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:43:09,136 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 105 [2022-12-12 12:43:09,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 150 transitions, 742 flow. Second operand has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:09,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:43:09,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 105 [2022-12-12 12:43:09,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:43:09,450 INFO L130 PetriNetUnfolder]: 13/238 cut-off events. [2022-12-12 12:43:09,451 INFO L131 PetriNetUnfolder]: For 324/396 co-relation queries the response was YES. [2022-12-12 12:43:09,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 238 events. 13/238 cut-off events. For 324/396 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 880 event pairs, 0 based on Foata normal form. 19/257 useless extension candidates. Maximal degree in co-relation 91. Up to 41 conditions per place. [2022-12-12 12:43:09,452 INFO L137 encePairwiseOnDemand]: 96/105 looper letters, 0 selfloop transitions, 0 changer transitions 147/147 dead transitions. [2022-12-12 12:43:09,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 147 transitions, 910 flow [2022-12-12 12:43:09,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 12:43:09,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 12:43:09,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 761 transitions. [2022-12-12 12:43:09,453 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7247619047619047 [2022-12-12 12:43:09,454 INFO L295 CegarLoopForPetriNet]: 101 programPoint places, 39 predicate places. [2022-12-12 12:43:09,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 147 transitions, 910 flow [2022-12-12 12:43:09,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 147 transitions, 770 flow, removed 69 selfloop flow, removed 1 redundant places. [2022-12-12 12:43:09,457 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 147 transitions, 770 flow [2022-12-12 12:43:09,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:09,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 12:43:09,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 12:43:09,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 12:43:09,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 12:43:09,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 12:43:09,460 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2022-12-12 12:43:09,462 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 12:43:09,462 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 12:43:09,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 12:43:09 BasicIcfg [2022-12-12 12:43:09,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 12:43:09,467 INFO L158 Benchmark]: Toolchain (without parser) took 7112.61ms. Allocated memory was 179.3MB in the beginning and 312.5MB in the end (delta: 133.2MB). Free memory was 155.4MB in the beginning and 188.3MB in the end (delta: -32.9MB). Peak memory consumption was 101.3MB. Max. memory is 8.0GB. [2022-12-12 12:43:09,467 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 179.3MB. Free memory was 155.6MB in the beginning and 155.4MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 12:43:09,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.81ms. Allocated memory is still 179.3MB. Free memory was 155.4MB in the beginning and 143.3MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 12:43:09,467 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.64ms. Allocated memory is still 179.3MB. Free memory was 143.3MB in the beginning and 140.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-12 12:43:09,468 INFO L158 Benchmark]: Boogie Preprocessor took 32.08ms. Allocated memory is still 179.3MB. Free memory was 140.7MB in the beginning and 139.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 12:43:09,468 INFO L158 Benchmark]: RCFGBuilder took 708.76ms. Allocated memory is still 179.3MB. Free memory was 139.2MB in the beginning and 120.9MB in the end (delta: 18.3MB). Peak memory consumption was 29.7MB. Max. memory is 8.0GB. [2022-12-12 12:43:09,468 INFO L158 Benchmark]: TraceAbstraction took 6045.29ms. Allocated memory was 179.3MB in the beginning and 312.5MB in the end (delta: 133.2MB). Free memory was 119.8MB in the beginning and 188.3MB in the end (delta: -68.4MB). Peak memory consumption was 65.3MB. Max. memory is 8.0GB. [2022-12-12 12:43:09,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 179.3MB. Free memory was 155.6MB in the beginning and 155.4MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 265.81ms. Allocated memory is still 179.3MB. Free memory was 155.4MB in the beginning and 143.3MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.64ms. Allocated memory is still 179.3MB. Free memory was 143.3MB in the beginning and 140.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.08ms. Allocated memory is still 179.3MB. Free memory was 140.7MB in the beginning and 139.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 708.76ms. Allocated memory is still 179.3MB. Free memory was 139.2MB in the beginning and 120.9MB in the end (delta: 18.3MB). Peak memory consumption was 29.7MB. Max. memory is 8.0GB. * TraceAbstraction took 6045.29ms. Allocated memory was 179.3MB in the beginning and 312.5MB in the end (delta: 133.2MB). Free memory was 119.8MB in the beginning and 188.3MB in the end (delta: -68.4MB). Peak memory consumption was 65.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 120 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 175 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 175 mSDsluCounter, 599 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 453 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 792 IncrementalHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 146 mSDtfsCounter, 792 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=770occurred in iteration=6, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 643 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 540 NumberOfCodeBlocks, 540 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 534 ConstructedInterpolants, 0 QuantifiedInterpolants, 3815 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 12:43:09,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...