/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/popl20-counter-determinism.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 13:08:36,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 13:08:36,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 13:08:36,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 13:08:36,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 13:08:36,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 13:08:36,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 13:08:36,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 13:08:36,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 13:08:36,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 13:08:36,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 13:08:36,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 13:08:36,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 13:08:36,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 13:08:36,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 13:08:36,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 13:08:36,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 13:08:36,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 13:08:36,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 13:08:36,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 13:08:36,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 13:08:36,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 13:08:36,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 13:08:36,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 13:08:36,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 13:08:36,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 13:08:36,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 13:08:36,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 13:08:36,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 13:08:36,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 13:08:36,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 13:08:36,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 13:08:36,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 13:08:36,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 13:08:36,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 13:08:36,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 13:08:36,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 13:08:36,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 13:08:36,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 13:08:36,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 13:08:36,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 13:08:36,368 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 13:08:36,391 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 13:08:36,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 13:08:36,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 13:08:36,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 13:08:36,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 13:08:36,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 13:08:36,393 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 13:08:36,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 13:08:36,394 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 13:08:36,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 13:08:36,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 13:08:36,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 13:08:36,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 13:08:36,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 13:08:36,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 13:08:36,395 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 13:08:36,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 13:08:36,395 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 13:08:36,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 13:08:36,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 13:08:36,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 13:08:36,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 13:08:36,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 13:08:36,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 13:08:36,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 13:08:36,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 13:08:36,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 13:08:36,396 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 13:08:36,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 13:08:36,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 13:08:36,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 13:08:36,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 13:08:36,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 13:08:36,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 13:08:36,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 13:08:36,726 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 13:08:36,726 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 13:08:36,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2022-12-12 13:08:37,810 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 13:08:38,060 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 13:08:38,060 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2022-12-12 13:08:38,065 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0ec4a875/3d0d401d0efd40c6baef8de1b604022b/FLAG4fc90c103 [2022-12-12 13:08:38,081 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0ec4a875/3d0d401d0efd40c6baef8de1b604022b [2022-12-12 13:08:38,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 13:08:38,083 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 13:08:38,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 13:08:38,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 13:08:38,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 13:08:38,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:08:38" (1/1) ... [2022-12-12 13:08:38,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673bfdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:08:38, skipping insertion in model container [2022-12-12 13:08:38,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:08:38" (1/1) ... [2022-12-12 13:08:38,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 13:08:38,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 13:08:38,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:08:38,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:08:38,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:08:38,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:08:38,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:08:38,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:08:38,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:08:38,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:08:38,211 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/popl20-counter-determinism.wvr.c[2476,2489] [2022-12-12 13:08:38,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 13:08:38,222 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 13:08:38,232 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:08:38,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:08:38,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:08:38,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:08:38,236 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:08:38,236 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:08:38,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:08:38,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:08:38,251 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/popl20-counter-determinism.wvr.c[2476,2489] [2022-12-12 13:08:38,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 13:08:38,262 INFO L208 MainTranslator]: Completed translation [2022-12-12 13:08:38,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:08:38 WrapperNode [2022-12-12 13:08:38,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 13:08:38,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 13:08:38,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 13:08:38,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 13:08:38,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:08:38" (1/1) ... [2022-12-12 13:08:38,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:08:38" (1/1) ... [2022-12-12 13:08:38,299 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 116 [2022-12-12 13:08:38,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 13:08:38,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 13:08:38,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 13:08:38,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 13:08:38,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:08:38" (1/1) ... [2022-12-12 13:08:38,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:08:38" (1/1) ... [2022-12-12 13:08:38,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:08:38" (1/1) ... [2022-12-12 13:08:38,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:08:38" (1/1) ... [2022-12-12 13:08:38,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:08:38" (1/1) ... [2022-12-12 13:08:38,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:08:38" (1/1) ... [2022-12-12 13:08:38,327 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:08:38" (1/1) ... [2022-12-12 13:08:38,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:08:38" (1/1) ... [2022-12-12 13:08:38,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 13:08:38,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 13:08:38,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 13:08:38,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 13:08:38,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:08:38" (1/1) ... [2022-12-12 13:08:38,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 13:08:38,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:08:38,372 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 13:08:38,390 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 13:08:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 13:08:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 13:08:38,403 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 13:08:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 13:08:38,403 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 13:08:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 13:08:38,404 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 13:08:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-12 13:08:38,404 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-12 13:08:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 13:08:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 13:08:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 13:08:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 13:08:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 13:08:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 13:08:38,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 13:08:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 13:08:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 13:08:38,405 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 13:08:38,504 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 13:08:38,505 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 13:08:38,692 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 13:08:38,728 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 13:08:38,729 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-12 13:08:38,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:08:38 BoogieIcfgContainer [2022-12-12 13:08:38,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 13:08:38,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 13:08:38,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 13:08:38,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 13:08:38,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 01:08:38" (1/3) ... [2022-12-12 13:08:38,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68295c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:08:38, skipping insertion in model container [2022-12-12 13:08:38,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:08:38" (2/3) ... [2022-12-12 13:08:38,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68295c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:08:38, skipping insertion in model container [2022-12-12 13:08:38,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:08:38" (3/3) ... [2022-12-12 13:08:38,736 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2022-12-12 13:08:38,749 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 13:08:38,749 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 13:08:38,749 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 13:08:38,792 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-12 13:08:38,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 119 transitions, 270 flow [2022-12-12 13:08:38,859 INFO L130 PetriNetUnfolder]: 9/115 cut-off events. [2022-12-12 13:08:38,859 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 13:08:38,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 115 events. 9/115 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 93 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2022-12-12 13:08:38,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 119 transitions, 270 flow [2022-12-12 13:08:38,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 103 transitions, 230 flow [2022-12-12 13:08:38,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 13:08:38,882 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;@75406a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 13:08:38,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-12 13:08:38,914 INFO L130 PetriNetUnfolder]: 9/102 cut-off events. [2022-12-12 13:08:38,914 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 13:08:38,914 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:08:38,915 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] [2022-12-12 13:08:38,915 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 2 more)] === [2022-12-12 13:08:38,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:08:38,919 INFO L85 PathProgramCache]: Analyzing trace with hash 360089710, now seen corresponding path program 1 times [2022-12-12 13:08:38,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:08:38,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446313668] [2022-12-12 13:08:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:08:38,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:08:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:08:39,431 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 13:08:39,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:08:39,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446313668] [2022-12-12 13:08:39,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446313668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:08:39,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:08:39,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 13:08:39,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509594415] [2022-12-12 13:08:39,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:08:39,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 13:08:39,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:08:39,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 13:08:39,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 13:08:39,476 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 119 [2022-12-12 13:08:39,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 0 states have call successors, (0), 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 13:08:39,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:08:39,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 119 [2022-12-12 13:08:39,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:08:39,703 INFO L130 PetriNetUnfolder]: 107/474 cut-off events. [2022-12-12 13:08:39,703 INFO L131 PetriNetUnfolder]: For 115/116 co-relation queries the response was YES. [2022-12-12 13:08:39,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 708 conditions, 474 events. 107/474 cut-off events. For 115/116 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2087 event pairs, 26 based on Foata normal form. 135/549 useless extension candidates. Maximal degree in co-relation 510. Up to 124 conditions per place. [2022-12-12 13:08:39,712 INFO L137 encePairwiseOnDemand]: 104/119 looper letters, 32 selfloop transitions, 5 changer transitions 8/124 dead transitions. [2022-12-12 13:08:39,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 124 transitions, 398 flow [2022-12-12 13:08:39,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 13:08:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 13:08:39,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 816 transitions. [2022-12-12 13:08:39,765 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-12-12 13:08:39,769 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 7 predicate places. [2022-12-12 13:08:39,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 124 transitions, 398 flow [2022-12-12 13:08:39,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 124 transitions, 356 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-12-12 13:08:39,775 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 124 transitions, 356 flow [2022-12-12 13:08:39,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 0 states have call successors, (0), 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 13:08:39,776 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:08:39,776 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] [2022-12-12 13:08:39,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 13:08:39,776 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 2 more)] === [2022-12-12 13:08:39,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:08:39,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1134279214, now seen corresponding path program 1 times [2022-12-12 13:08:39,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:08:39,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802796369] [2022-12-12 13:08:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:08:39,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:08:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:08:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:08:40,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:08:40,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802796369] [2022-12-12 13:08:40,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802796369] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:08:40,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138900249] [2022-12-12 13:08:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:08:40,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:08:40,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:08:40,029 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) [2022-12-12 13:08:40,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 13:08:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:08:40,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 13:08:40,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:08:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:08:40,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:08:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:08:40,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138900249] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:08:40,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:08:40,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-12-12 13:08:40,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864344866] [2022-12-12 13:08:40,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:08:40,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 13:08:40,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:08:40,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 13:08:40,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 13:08:40,333 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-12-12 13:08:40,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 124 transitions, 356 flow. Second operand has 9 states, 9 states have (on average 88.22222222222223) internal successors, (794), 9 states have internal predecessors, (794), 0 states have call successors, (0), 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 13:08:40,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:08:40,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-12-12 13:08:40,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:08:41,501 INFO L130 PetriNetUnfolder]: 7549/11486 cut-off events. [2022-12-12 13:08:41,502 INFO L131 PetriNetUnfolder]: For 2212/3334 co-relation queries the response was YES. [2022-12-12 13:08:41,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24601 conditions, 11486 events. 7549/11486 cut-off events. For 2212/3334 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 76011 event pairs, 458 based on Foata normal form. 11/8555 useless extension candidates. Maximal degree in co-relation 6066. Up to 2111 conditions per place. [2022-12-12 13:08:41,575 INFO L137 encePairwiseOnDemand]: 111/119 looper letters, 195 selfloop transitions, 24 changer transitions 11/303 dead transitions. [2022-12-12 13:08:41,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 303 transitions, 1378 flow [2022-12-12 13:08:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 13:08:41,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 13:08:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1382 transitions. [2022-12-12 13:08:41,578 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.82953181272509 [2022-12-12 13:08:41,578 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 12 predicate places. [2022-12-12 13:08:41,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 303 transitions, 1378 flow [2022-12-12 13:08:41,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 303 transitions, 1312 flow, removed 33 selfloop flow, removed 0 redundant places. [2022-12-12 13:08:41,599 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 303 transitions, 1312 flow [2022-12-12 13:08:41,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.22222222222223) internal successors, (794), 9 states have internal predecessors, (794), 0 states have call successors, (0), 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 13:08:41,600 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:08:41,600 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] [2022-12-12 13:08:41,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 13:08:41,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:08:41,808 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 2 more)] === [2022-12-12 13:08:41,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:08:41,808 INFO L85 PathProgramCache]: Analyzing trace with hash -39006160, now seen corresponding path program 2 times [2022-12-12 13:08:41,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:08:41,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862155455] [2022-12-12 13:08:41,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:08:41,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:08:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:08:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:08:41,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:08:41,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862155455] [2022-12-12 13:08:41,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862155455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:08:41,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:08:41,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 13:08:41,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934594570] [2022-12-12 13:08:41,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:08:41,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 13:08:41,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:08:41,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 13:08:41,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 13:08:41,910 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-12-12 13:08:41,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 303 transitions, 1312 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 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 13:08:41,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:08:41,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-12-12 13:08:41,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:08:42,952 INFO L130 PetriNetUnfolder]: 9896/16959 cut-off events. [2022-12-12 13:08:42,953 INFO L131 PetriNetUnfolder]: For 4049/12105 co-relation queries the response was YES. [2022-12-12 13:08:42,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45298 conditions, 16959 events. 9896/16959 cut-off events. For 4049/12105 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 135579 event pairs, 1999 based on Foata normal form. 53/13199 useless extension candidates. Maximal degree in co-relation 6802. Up to 6631 conditions per place. [2022-12-12 13:08:43,043 INFO L137 encePairwiseOnDemand]: 112/119 looper letters, 397 selfloop transitions, 19 changer transitions 13/502 dead transitions. [2022-12-12 13:08:43,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 502 transitions, 3179 flow [2022-12-12 13:08:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 13:08:43,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 13:08:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 590 transitions. [2022-12-12 13:08:43,045 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8263305322128851 [2022-12-12 13:08:43,046 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 17 predicate places. [2022-12-12 13:08:43,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 502 transitions, 3179 flow [2022-12-12 13:08:43,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 502 transitions, 2989 flow, removed 94 selfloop flow, removed 1 redundant places. [2022-12-12 13:08:43,054 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 502 transitions, 2989 flow [2022-12-12 13:08:43,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 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 13:08:43,054 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:08:43,054 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] [2022-12-12 13:08:43,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 13:08:43,055 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 2 more)] === [2022-12-12 13:08:43,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:08:43,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1062648242, now seen corresponding path program 1 times [2022-12-12 13:08:43,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:08:43,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575723835] [2022-12-12 13:08:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:08:43,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:08:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:08:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:08:43,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:08:43,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575723835] [2022-12-12 13:08:43,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575723835] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:08:43,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:08:43,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 13:08:43,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486082666] [2022-12-12 13:08:43,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:08:43,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 13:08:43,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:08:43,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 13:08:43,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 13:08:43,189 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-12-12 13:08:43,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 502 transitions, 2989 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 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 13:08:43,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:08:43,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-12-12 13:08:43,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:08:44,517 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([351] L72-4-->L73: Formula: (< |v_thread4Thread1of1ForFork0_~i~3#1_3| v_~N~0_8) InVars {thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_3|, ~N~0=v_~N~0_8} OutVars{thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_3|, ~N~0=v_~N~0_8} AuxVars[] AssignedVars[][496], [65#L73true, 648#(and (<= 0 thread1Thread1of1ForFork3_~i~0) (<= 1 ~N~0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 44#L92-2true, 658#(= |thread2Thread1of1ForFork1_~i~1#1| 0), 98#L51-4true, 66#L62-4true, 126#true, 665#true]) [2022-12-12 13:08:44,517 INFO L382 tUnfolder$Statistics]: this new event has 63 ancestors and is cut-off event [2022-12-12 13:08:44,517 INFO L385 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-12-12 13:08:44,517 INFO L385 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-12-12 13:08:44,517 INFO L385 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-12-12 13:08:44,517 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([352] L72-4-->L72-5: Formula: (not (< |v_thread4Thread1of1ForFork0_~i~3#1_5| v_~N~0_7)) InVars {thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_5|, ~N~0=v_~N~0_7} OutVars{thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_5|, ~N~0=v_~N~0_7} AuxVars[] AssignedVars[][497], [648#(and (<= 0 thread1Thread1of1ForFork3_~i~0) (<= 1 ~N~0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 44#L92-2true, 658#(= |thread2Thread1of1ForFork1_~i~1#1| 0), 41#L72-5true, 98#L51-4true, 66#L62-4true, 126#true, 665#true]) [2022-12-12 13:08:44,517 INFO L382 tUnfolder$Statistics]: this new event has 63 ancestors and is cut-off event [2022-12-12 13:08:44,517 INFO L385 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-12-12 13:08:44,518 INFO L385 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-12-12 13:08:44,518 INFO L385 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-12-12 13:08:44,668 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([351] L72-4-->L73: Formula: (< |v_thread4Thread1of1ForFork0_~i~3#1_3| v_~N~0_8) InVars {thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_3|, ~N~0=v_~N~0_8} OutVars{thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_3|, ~N~0=v_~N~0_8} AuxVars[] AssignedVars[][496], [65#L73true, 648#(and (<= 0 thread1Thread1of1ForFork3_~i~0) (<= 1 ~N~0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 44#L92-2true, 658#(= |thread2Thread1of1ForFork1_~i~1#1| 0), 98#L51-4true, 126#true, 665#true, 23#L62-2true]) [2022-12-12 13:08:44,669 INFO L382 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2022-12-12 13:08:44,669 INFO L385 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-12-12 13:08:44,669 INFO L385 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-12-12 13:08:44,669 INFO L385 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-12-12 13:08:44,669 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([352] L72-4-->L72-5: Formula: (not (< |v_thread4Thread1of1ForFork0_~i~3#1_5| v_~N~0_7)) InVars {thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_5|, ~N~0=v_~N~0_7} OutVars{thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_5|, ~N~0=v_~N~0_7} AuxVars[] AssignedVars[][497], [648#(and (<= 0 thread1Thread1of1ForFork3_~i~0) (<= 1 ~N~0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 44#L92-2true, 658#(= |thread2Thread1of1ForFork1_~i~1#1| 0), 41#L72-5true, 98#L51-4true, 126#true, 665#true, 23#L62-2true]) [2022-12-12 13:08:44,669 INFO L382 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2022-12-12 13:08:44,669 INFO L385 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-12-12 13:08:44,669 INFO L385 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-12-12 13:08:44,669 INFO L385 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-12-12 13:08:44,700 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([351] L72-4-->L73: Formula: (< |v_thread4Thread1of1ForFork0_~i~3#1_3| v_~N~0_8) InVars {thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_3|, ~N~0=v_~N~0_8} OutVars{thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_3|, ~N~0=v_~N~0_8} AuxVars[] AssignedVars[][496], [65#L73true, 648#(and (<= 0 thread1Thread1of1ForFork3_~i~0) (<= 1 ~N~0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 99#L62-3true, 44#L92-2true, 658#(= |thread2Thread1of1ForFork1_~i~1#1| 0), 98#L51-4true, 126#true, 665#true]) [2022-12-12 13:08:44,700 INFO L382 tUnfolder$Statistics]: this new event has 67 ancestors and is cut-off event [2022-12-12 13:08:44,700 INFO L385 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-12-12 13:08:44,701 INFO L385 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-12-12 13:08:44,701 INFO L385 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-12-12 13:08:44,701 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([352] L72-4-->L72-5: Formula: (not (< |v_thread4Thread1of1ForFork0_~i~3#1_5| v_~N~0_7)) InVars {thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_5|, ~N~0=v_~N~0_7} OutVars{thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_5|, ~N~0=v_~N~0_7} AuxVars[] AssignedVars[][497], [648#(and (<= 0 thread1Thread1of1ForFork3_~i~0) (<= 1 ~N~0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 99#L62-3true, 44#L92-2true, 658#(= |thread2Thread1of1ForFork1_~i~1#1| 0), 41#L72-5true, 98#L51-4true, 126#true, 665#true]) [2022-12-12 13:08:44,701 INFO L382 tUnfolder$Statistics]: this new event has 67 ancestors and is cut-off event [2022-12-12 13:08:44,701 INFO L385 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-12-12 13:08:44,701 INFO L385 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-12-12 13:08:44,701 INFO L385 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-12-12 13:08:44,740 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([351] L72-4-->L73: Formula: (< |v_thread4Thread1of1ForFork0_~i~3#1_3| v_~N~0_8) InVars {thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_3|, ~N~0=v_~N~0_8} OutVars{thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_3|, ~N~0=v_~N~0_8} AuxVars[] AssignedVars[][496], [65#L73true, 4#L51-2true, 648#(and (<= 0 thread1Thread1of1ForFork3_~i~0) (<= 1 ~N~0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 44#L92-2true, 658#(= |thread2Thread1of1ForFork1_~i~1#1| 0), 126#true, 665#true, 23#L62-2true]) [2022-12-12 13:08:44,740 INFO L382 tUnfolder$Statistics]: this new event has 69 ancestors and is cut-off event [2022-12-12 13:08:44,740 INFO L385 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-12-12 13:08:44,740 INFO L385 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-12-12 13:08:44,740 INFO L385 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-12-12 13:08:44,740 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([352] L72-4-->L72-5: Formula: (not (< |v_thread4Thread1of1ForFork0_~i~3#1_5| v_~N~0_7)) InVars {thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_5|, ~N~0=v_~N~0_7} OutVars{thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_5|, ~N~0=v_~N~0_7} AuxVars[] AssignedVars[][497], [4#L51-2true, 648#(and (<= 0 thread1Thread1of1ForFork3_~i~0) (<= 1 ~N~0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 44#L92-2true, 658#(= |thread2Thread1of1ForFork1_~i~1#1| 0), 41#L72-5true, 126#true, 665#true, 23#L62-2true]) [2022-12-12 13:08:44,740 INFO L382 tUnfolder$Statistics]: this new event has 69 ancestors and is cut-off event [2022-12-12 13:08:44,740 INFO L385 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-12-12 13:08:44,740 INFO L385 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-12-12 13:08:44,740 INFO L385 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-12-12 13:08:44,756 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([351] L72-4-->L73: Formula: (< |v_thread4Thread1of1ForFork0_~i~3#1_3| v_~N~0_8) InVars {thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_3|, ~N~0=v_~N~0_8} OutVars{thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_3|, ~N~0=v_~N~0_8} AuxVars[] AssignedVars[][496], [65#L73true, 4#L51-2true, 648#(and (<= 0 thread1Thread1of1ForFork3_~i~0) (<= 1 ~N~0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 99#L62-3true, 44#L92-2true, 658#(= |thread2Thread1of1ForFork1_~i~1#1| 0), 126#true, 665#true]) [2022-12-12 13:08:44,756 INFO L382 tUnfolder$Statistics]: this new event has 70 ancestors and is cut-off event [2022-12-12 13:08:44,756 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-12 13:08:44,757 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-12 13:08:44,757 INFO L385 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-12-12 13:08:44,757 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([352] L72-4-->L72-5: Formula: (not (< |v_thread4Thread1of1ForFork0_~i~3#1_5| v_~N~0_7)) InVars {thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_5|, ~N~0=v_~N~0_7} OutVars{thread4Thread1of1ForFork0_~i~3#1=|v_thread4Thread1of1ForFork0_~i~3#1_5|, ~N~0=v_~N~0_7} AuxVars[] AssignedVars[][497], [4#L51-2true, 648#(and (<= 0 thread1Thread1of1ForFork3_~i~0) (<= 1 ~N~0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 99#L62-3true, 44#L92-2true, 658#(= |thread2Thread1of1ForFork1_~i~1#1| 0), 41#L72-5true, 126#true, 665#true]) [2022-12-12 13:08:44,757 INFO L382 tUnfolder$Statistics]: this new event has 70 ancestors and is cut-off event [2022-12-12 13:08:44,757 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-12 13:08:44,757 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-12 13:08:44,757 INFO L385 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-12-12 13:08:44,787 INFO L130 PetriNetUnfolder]: 15979/25274 cut-off events. [2022-12-12 13:08:44,787 INFO L131 PetriNetUnfolder]: For 19593/45242 co-relation queries the response was YES. [2022-12-12 13:08:44,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80787 conditions, 25274 events. 15979/25274 cut-off events. For 19593/45242 co-relation queries the response was YES. Maximal size of possible extension queue 1265. Compared 195986 event pairs, 3071 based on Foata normal form. 563/20802 useless extension candidates. Maximal degree in co-relation 27872. Up to 12407 conditions per place. [2022-12-12 13:08:45,006 INFO L137 encePairwiseOnDemand]: 112/119 looper letters, 422 selfloop transitions, 17 changer transitions 62/594 dead transitions. [2022-12-12 13:08:45,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 594 transitions, 4567 flow [2022-12-12 13:08:45,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 13:08:45,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 13:08:45,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2022-12-12 13:08:45,008 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8221288515406162 [2022-12-12 13:08:45,009 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 21 predicate places. [2022-12-12 13:08:45,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 594 transitions, 4567 flow [2022-12-12 13:08:45,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 594 transitions, 4563 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-12 13:08:45,020 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 594 transitions, 4563 flow [2022-12-12 13:08:45,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 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 13:08:45,020 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:08:45,020 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] [2022-12-12 13:08:45,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 13:08:45,021 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 2 more)] === [2022-12-12 13:08:45,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:08:45,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1034075098, now seen corresponding path program 2 times [2022-12-12 13:08:45,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:08:45,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879164728] [2022-12-12 13:08:45,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:08:45,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:08:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:08:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:08:45,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:08:45,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879164728] [2022-12-12 13:08:45,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879164728] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:08:45,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:08:45,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 13:08:45,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569010782] [2022-12-12 13:08:45,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:08:45,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 13:08:45,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:08:45,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 13:08:45,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 13:08:45,085 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-12-12 13:08:45,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 594 transitions, 4563 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 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 13:08:45,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:08:45,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-12-12 13:08:45,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:08:49,292 INFO L130 PetriNetUnfolder]: 32220/51757 cut-off events. [2022-12-12 13:08:49,292 INFO L131 PetriNetUnfolder]: For 61175/105485 co-relation queries the response was YES. [2022-12-12 13:08:49,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191891 conditions, 51757 events. 32220/51757 cut-off events. For 61175/105485 co-relation queries the response was YES. Maximal size of possible extension queue 2271. Compared 438018 event pairs, 7624 based on Foata normal form. 182/43338 useless extension candidates. Maximal degree in co-relation 31635. Up to 24188 conditions per place. [2022-12-12 13:08:49,739 INFO L137 encePairwiseOnDemand]: 112/119 looper letters, 997 selfloop transitions, 37 changer transitions 164/1316 dead transitions. [2022-12-12 13:08:49,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 1316 transitions, 12909 flow [2022-12-12 13:08:49,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 13:08:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 13:08:49,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 586 transitions. [2022-12-12 13:08:49,741 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8207282913165266 [2022-12-12 13:08:49,742 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 25 predicate places. [2022-12-12 13:08:49,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 1316 transitions, 12909 flow [2022-12-12 13:08:49,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 1316 transitions, 12905 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-12 13:08:49,783 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 1316 transitions, 12905 flow [2022-12-12 13:08:49,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 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 13:08:49,784 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:08:49,784 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] [2022-12-12 13:08:49,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 13:08:49,784 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 2 more)] === [2022-12-12 13:08:49,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:08:49,785 INFO L85 PathProgramCache]: Analyzing trace with hash -331042532, now seen corresponding path program 3 times [2022-12-12 13:08:49,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:08:49,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832806809] [2022-12-12 13:08:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:08:49,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:08:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:08:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:08:49,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:08:49,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832806809] [2022-12-12 13:08:49,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832806809] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:08:49,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401608786] [2022-12-12 13:08:49,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 13:08:49,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:08:49,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:08:49,871 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) [2022-12-12 13:08:49,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 13:08:49,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 13:08:49,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:08:49,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 13:08:49,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:08:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:08:50,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:08:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:08:50,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401608786] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:08:50,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:08:50,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-12-12 13:08:50,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17811206] [2022-12-12 13:08:50,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:08:50,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 13:08:50,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:08:50,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 13:08:50,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-12 13:08:50,068 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-12-12 13:08:50,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 1316 transitions, 12905 flow. Second operand has 11 states, 11 states have (on average 88.36363636363636) internal successors, (972), 11 states have internal predecessors, (972), 0 states have call successors, (0), 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 13:08:50,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:08:50,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-12-12 13:08:50,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:08:57,563 INFO L130 PetriNetUnfolder]: 43621/69428 cut-off events. [2022-12-12 13:08:57,564 INFO L131 PetriNetUnfolder]: For 131310/256469 co-relation queries the response was YES. [2022-12-12 13:08:57,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311779 conditions, 69428 events. 43621/69428 cut-off events. For 131310/256469 co-relation queries the response was YES. Maximal size of possible extension queue 3047. Compared 610655 event pairs, 4315 based on Foata normal form. 2025/60422 useless extension candidates. Maximal degree in co-relation 48107. Up to 27223 conditions per place. [2022-12-12 13:08:58,232 INFO L137 encePairwiseOnDemand]: 111/119 looper letters, 2020 selfloop transitions, 198 changer transitions 321/2634 dead transitions. [2022-12-12 13:08:58,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 2634 transitions, 31448 flow [2022-12-12 13:08:58,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 13:08:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 13:08:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 908 transitions. [2022-12-12 13:08:58,234 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8478057889822596 [2022-12-12 13:08:58,235 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 32 predicate places. [2022-12-12 13:08:58,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 2634 transitions, 31448 flow [2022-12-12 13:08:58,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 2634 transitions, 30684 flow, removed 382 selfloop flow, removed 0 redundant places. [2022-12-12 13:08:58,290 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 2634 transitions, 30684 flow [2022-12-12 13:08:58,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 88.36363636363636) internal successors, (972), 11 states have internal predecessors, (972), 0 states have call successors, (0), 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 13:08:58,291 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:08:58,291 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] [2022-12-12 13:08:58,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-12 13:08:58,495 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,SelfDestructingSolverStorable5 [2022-12-12 13:08:58,496 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 2 more)] === [2022-12-12 13:08:58,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:08:58,497 INFO L85 PathProgramCache]: Analyzing trace with hash -731302240, now seen corresponding path program 4 times [2022-12-12 13:08:58,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:08:58,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722969745] [2022-12-12 13:08:58,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:08:58,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:08:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:08:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:08:58,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:08:58,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722969745] [2022-12-12 13:08:58,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722969745] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:08:58,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401547043] [2022-12-12 13:08:58,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 13:08:58,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:08:58,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:08:58,579 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) [2022-12-12 13:08:58,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 13:08:58,642 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 13:08:58,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:08:58,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 13:08:58,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:08:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:08:58,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:08:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:08:58,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401547043] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:08:58,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:08:58,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-12-12 13:08:58,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317427615] [2022-12-12 13:08:58,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:08:58,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 13:08:58,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:08:58,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 13:08:58,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 13:08:58,702 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-12-12 13:08:58,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 2634 transitions, 30684 flow. Second operand has 9 states, 9 states have (on average 88.22222222222223) internal successors, (794), 9 states have internal predecessors, (794), 0 states have call successors, (0), 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 13:08:58,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:08:58,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-12-12 13:08:58,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:09:16,311 INFO L130 PetriNetUnfolder]: 73706/115520 cut-off events. [2022-12-12 13:09:16,311 INFO L131 PetriNetUnfolder]: For 275578/812291 co-relation queries the response was YES. [2022-12-12 13:09:16,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585217 conditions, 115520 events. 73706/115520 cut-off events. For 275578/812291 co-relation queries the response was YES. Maximal size of possible extension queue 4615. Compared 1050536 event pairs, 5239 based on Foata normal form. 2683/100924 useless extension candidates. Maximal degree in co-relation 98709. Up to 46829 conditions per place. [2022-12-12 13:09:17,314 INFO L137 encePairwiseOnDemand]: 111/119 looper letters, 4862 selfloop transitions, 695 changer transitions 532/6184 dead transitions. [2022-12-12 13:09:17,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 6184 transitions, 84640 flow [2022-12-12 13:09:17,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 13:09:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 13:09:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1377 transitions. [2022-12-12 13:09:17,316 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.826530612244898 [2022-12-12 13:09:17,317 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 45 predicate places. [2022-12-12 13:09:17,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 6184 transitions, 84640 flow [2022-12-12 13:09:17,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 6184 transitions, 82912 flow, removed 864 selfloop flow, removed 0 redundant places. [2022-12-12 13:09:17,439 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 6184 transitions, 82912 flow [2022-12-12 13:09:17,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.22222222222223) internal successors, (794), 9 states have internal predecessors, (794), 0 states have call successors, (0), 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 13:09:17,439 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:09:17,439 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] [2022-12-12 13:09:17,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-12 13:09:17,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:09:17,644 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 2 more)] === [2022-12-12 13:09:17,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:09:17,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1109037914, now seen corresponding path program 3 times [2022-12-12 13:09:17,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:09:17,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45092087] [2022-12-12 13:09:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:09:17,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:09:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:09:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:09:17,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:09:17,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45092087] [2022-12-12 13:09:17,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45092087] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:09:17,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:09:17,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 13:09:17,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013108263] [2022-12-12 13:09:17,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:09:17,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 13:09:17,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:09:17,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 13:09:17,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-12 13:09:17,884 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-12-12 13:09:17,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 6184 transitions, 82912 flow. Second operand has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 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 13:09:17,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:09:17,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-12-12 13:09:17,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:10:08,641 INFO L130 PetriNetUnfolder]: 107113/168120 cut-off events. [2022-12-12 13:10:08,642 INFO L131 PetriNetUnfolder]: For 520766/958669 co-relation queries the response was YES. [2022-12-12 13:10:09,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951776 conditions, 168120 events. 107113/168120 cut-off events. For 520766/958669 co-relation queries the response was YES. Maximal size of possible extension queue 6943. Compared 1606947 event pairs, 7511 based on Foata normal form. 4632/148555 useless extension candidates. Maximal degree in co-relation 193871. Up to 68696 conditions per place. [2022-12-12 13:10:10,259 INFO L137 encePairwiseOnDemand]: 111/119 looper letters, 8392 selfloop transitions, 311 changer transitions 805/9706 dead transitions. [2022-12-12 13:10:10,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 9706 transitions, 149913 flow [2022-12-12 13:10:10,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 13:10:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 13:10:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 622 transitions. [2022-12-12 13:10:10,262 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8711484593837535 [2022-12-12 13:10:10,262 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 50 predicate places. [2022-12-12 13:10:10,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 9706 transitions, 149913 flow [2022-12-12 13:10:10,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 9706 transitions, 148641 flow, removed 636 selfloop flow, removed 0 redundant places. [2022-12-12 13:10:10,651 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 9706 transitions, 148641 flow [2022-12-12 13:10:10,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 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 13:10:10,652 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:10:10,652 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] [2022-12-12 13:10:10,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 13:10:10,652 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 2 more)] === [2022-12-12 13:10:10,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:10:10,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1397590340, now seen corresponding path program 4 times [2022-12-12 13:10:10,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:10:10,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031756647] [2022-12-12 13:10:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:10:10,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:10:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:10:10,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:10:10,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:10:10,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031756647] [2022-12-12 13:10:10,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031756647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:10:10,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:10:10,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 13:10:10,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050954867] [2022-12-12 13:10:10,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:10:10,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 13:10:10,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:10:10,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 13:10:10,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 13:10:10,725 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-12-12 13:10:10,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 9706 transitions, 148641 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 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 13:10:10,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:10:10,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-12-12 13:10:10,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:11:23,958 INFO L130 PetriNetUnfolder]: 102204/160104 cut-off events. [2022-12-12 13:11:23,958 INFO L131 PetriNetUnfolder]: For 695438/2681177 co-relation queries the response was YES. [2022-12-12 13:11:24,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011521 conditions, 160104 events. 102204/160104 cut-off events. For 695438/2681177 co-relation queries the response was YES. Maximal size of possible extension queue 6506. Compared 1515395 event pairs, 7177 based on Foata normal form. 6375/143983 useless extension candidates. Maximal degree in co-relation 96759. Up to 65104 conditions per place. [2022-12-12 13:11:25,555 INFO L137 encePairwiseOnDemand]: 111/119 looper letters, 7786 selfloop transitions, 231 changer transitions 735/8950 dead transitions. [2022-12-12 13:11:25,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 8950 transitions, 154112 flow [2022-12-12 13:11:25,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 13:11:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 13:11:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 608 transitions. [2022-12-12 13:11:25,562 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8515406162464986 [2022-12-12 13:11:25,562 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 55 predicate places. [2022-12-12 13:11:25,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 8950 transitions, 154112 flow [2022-12-12 13:11:26,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 8950 transitions, 134004 flow, removed 10009 selfloop flow, removed 1 redundant places. [2022-12-12 13:11:26,351 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 8950 transitions, 134004 flow [2022-12-12 13:11:26,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 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 13:11:26,352 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:11:26,352 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] [2022-12-12 13:11:26,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 13:11:26,352 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 2 more)] === [2022-12-12 13:11:26,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:11:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1584971624, now seen corresponding path program 5 times [2022-12-12 13:11:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:11:26,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664499828] [2022-12-12 13:11:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:11:26,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:11:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:11:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:11:26,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:11:26,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664499828] [2022-12-12 13:11:26,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664499828] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:11:26,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:11:26,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 13:11:26,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392548285] [2022-12-12 13:11:26,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:11:26,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 13:11:26,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:11:26,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 13:11:26,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 13:11:26,416 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-12-12 13:11:26,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 8950 transitions, 134004 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 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 13:11:26,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:11:26,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-12-12 13:11:26,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:12:45,216 INFO L130 PetriNetUnfolder]: 103930/162905 cut-off events. [2022-12-12 13:12:45,216 INFO L131 PetriNetUnfolder]: For 665929/1651861 co-relation queries the response was YES. [2022-12-12 13:12:45,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009690 conditions, 162905 events. 103930/162905 cut-off events. For 665929/1651861 co-relation queries the response was YES. Maximal size of possible extension queue 6523. Compared 1540085 event pairs, 7699 based on Foata normal form. 5504/146582 useless extension candidates. Maximal degree in co-relation 114876. Up to 68896 conditions per place. [2022-12-12 13:12:46,783 INFO L137 encePairwiseOnDemand]: 112/119 looper letters, 7786 selfloop transitions, 232 changer transitions 871/9337 dead transitions. [2022-12-12 13:12:46,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 9337 transitions, 156089 flow [2022-12-12 13:12:46,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 13:12:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 13:12:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 589 transitions. [2022-12-12 13:12:46,791 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8249299719887955 [2022-12-12 13:12:46,792 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 59 predicate places. [2022-12-12 13:12:46,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 9337 transitions, 156089 flow [2022-12-12 13:12:48,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 9337 transitions, 155578 flow, removed 186 selfloop flow, removed 2 redundant places. [2022-12-12 13:12:48,045 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 9337 transitions, 155578 flow [2022-12-12 13:12:48,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 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 13:12:48,045 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:12:48,045 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] [2022-12-12 13:12:48,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 13:12:48,046 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 2 more)] === [2022-12-12 13:12:48,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:12:48,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1258846428, now seen corresponding path program 6 times [2022-12-12 13:12:48,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:12:48,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834487657] [2022-12-12 13:12:48,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:12:48,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:12:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:12:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:12:48,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:12:48,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834487657] [2022-12-12 13:12:48,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834487657] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:12:48,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:12:48,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 13:12:48,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346300743] [2022-12-12 13:12:48,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:12:48,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 13:12:48,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:12:48,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 13:12:48,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 13:12:48,105 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-12-12 13:12:48,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 9337 transitions, 155578 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 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 13:12:48,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:12:48,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-12-12 13:12:48,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand