/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 20:21:53,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 20:21:53,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 20:21:53,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 20:21:53,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 20:21:53,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 20:21:53,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 20:21:53,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 20:21:53,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 20:21:53,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 20:21:53,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 20:21:53,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 20:21:53,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 20:21:53,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 20:21:53,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 20:21:53,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 20:21:53,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 20:21:53,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 20:21:53,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 20:21:53,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 20:21:53,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 20:21:53,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 20:21:53,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 20:21:53,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 20:21:53,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 20:21:53,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 20:21:53,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 20:21:53,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 20:21:53,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 20:21:53,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 20:21:53,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 20:21:53,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 20:21:53,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 20:21:53,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 20:21:53,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 20:21:53,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 20:21:53,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 20:21:53,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 20:21:53,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 20:21:53,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 20:21:53,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 20:21:53,239 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 [2022-12-11 20:21:53,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 20:21:53,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 20:21:53,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 20:21:53,289 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 20:21:53,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 20:21:53,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 20:21:53,290 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 20:21:53,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 20:21:53,291 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 20:21:53,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 20:21:53,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 20:21:53,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 20:21:53,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 20:21:53,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 20:21:53,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 20:21:53,292 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 20:21:53,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 20:21:53,292 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 20:21:53,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 20:21:53,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 20:21:53,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 20:21:53,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 20:21:53,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 20:21:53,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:21:53,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 20:21:53,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 20:21:53,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 20:21:53,294 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 20:21:53,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 20:21:53,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 20:21:53,294 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 20:21:53,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 20:21:53,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 20:21:53,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 20:21:53,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 20:21:53,607 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 20:21:53,607 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 20:21:53,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2022-12-11 20:21:54,761 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 20:21:54,941 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 20:21:54,942 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2022-12-11 20:21:54,952 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dee654da/c0355c02e770400fac88629962011e4b/FLAGd78b8fcba [2022-12-11 20:21:54,968 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dee654da/c0355c02e770400fac88629962011e4b [2022-12-11 20:21:54,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 20:21:54,971 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 20:21:54,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 20:21:54,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 20:21:54,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 20:21:54,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:21:54" (1/1) ... [2022-12-11 20:21:54,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664e6a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:21:54, skipping insertion in model container [2022-12-11 20:21:54,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:21:54" (1/1) ... [2022-12-11 20:21:54,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 20:21:55,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 20:21:55,389 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-12-11 20:21:55,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:21:55,411 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 20:21:55,462 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-12-11 20:21:55,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:21:55,523 INFO L208 MainTranslator]: Completed translation [2022-12-11 20:21:55,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:21:55 WrapperNode [2022-12-11 20:21:55,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 20:21:55,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 20:21:55,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 20:21:55,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 20:21:55,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:21:55" (1/1) ... [2022-12-11 20:21:55,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:21:55" (1/1) ... [2022-12-11 20:21:55,589 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-12-11 20:21:55,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 20:21:55,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 20:21:55,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 20:21:55,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 20:21:55,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:21:55" (1/1) ... [2022-12-11 20:21:55,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:21:55" (1/1) ... [2022-12-11 20:21:55,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:21:55" (1/1) ... [2022-12-11 20:21:55,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:21:55" (1/1) ... [2022-12-11 20:21:55,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:21:55" (1/1) ... [2022-12-11 20:21:55,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:21:55" (1/1) ... [2022-12-11 20:21:55,609 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:21:55" (1/1) ... [2022-12-11 20:21:55,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:21:55" (1/1) ... [2022-12-11 20:21:55,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 20:21:55,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 20:21:55,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 20:21:55,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 20:21:55,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:21:55" (1/1) ... [2022-12-11 20:21:55,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:21:55,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:21:55,648 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) [2022-12-11 20:21:55,653 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 [2022-12-11 20:21:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 20:21:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 20:21:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-11 20:21:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 20:21:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 20:21:55,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 20:21:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 20:21:55,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 20:21:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 20:21:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-11 20:21:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 20:21:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 20:21:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 20:21:55,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 20:21:55,681 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 20:21:55,801 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 20:21:55,803 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 20:21:56,024 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 20:21:56,031 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 20:21:56,031 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-11 20:21:56,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:21:56 BoogieIcfgContainer [2022-12-11 20:21:56,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 20:21:56,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 20:21:56,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 20:21:56,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 20:21:56,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 08:21:54" (1/3) ... [2022-12-11 20:21:56,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c853b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:21:56, skipping insertion in model container [2022-12-11 20:21:56,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:21:55" (2/3) ... [2022-12-11 20:21:56,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c853b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:21:56, skipping insertion in model container [2022-12-11 20:21:56,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:21:56" (3/3) ... [2022-12-11 20:21:56,039 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2022-12-11 20:21:56,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 20:21:56,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 20:21:56,054 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 20:21:56,132 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-11 20:21:56,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 131 transitions, 278 flow [2022-12-11 20:21:56,232 INFO L130 PetriNetUnfolder]: 10/129 cut-off events. [2022-12-11 20:21:56,232 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 20:21:56,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 10/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 82. Up to 3 conditions per place. [2022-12-11 20:21:56,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 131 transitions, 278 flow [2022-12-11 20:21:56,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 118 transitions, 248 flow [2022-12-11 20:21:56,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 20:21:56,266 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;@14c6263f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 20:21:56,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 20:21:56,314 INFO L130 PetriNetUnfolder]: 8/117 cut-off events. [2022-12-11 20:21:56,314 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 20:21:56,314 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:21:56,315 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:21:56,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:21:56,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:21:56,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1760909140, now seen corresponding path program 1 times [2022-12-11 20:21:56,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:21:56,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899794516] [2022-12-11 20:21:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:21:56,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:21:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:21:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:21:56,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:21:56,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899794516] [2022-12-11 20:21:56,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899794516] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:21:56,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:21:56,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 20:21:56,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939253590] [2022-12-11 20:21:56,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:21:56,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 20:21:56,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:21:56,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 20:21:56,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 20:21:56,821 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 131 [2022-12-11 20:21:56,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 118 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:21:56,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:21:56,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 131 [2022-12-11 20:21:56,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:21:56,898 INFO L130 PetriNetUnfolder]: 16/170 cut-off events. [2022-12-11 20:21:56,898 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-11 20:21:56,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 170 events. 16/170 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 378 event pairs, 5 based on Foata normal form. 21/181 useless extension candidates. Maximal degree in co-relation 155. Up to 22 conditions per place. [2022-12-11 20:21:56,901 INFO L137 encePairwiseOnDemand]: 124/131 looper letters, 12 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2022-12-11 20:21:56,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 118 transitions, 279 flow [2022-12-11 20:21:56,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 20:21:56,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 20:21:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2022-12-11 20:21:56,918 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9363867684478372 [2022-12-11 20:21:56,919 INFO L175 Difference]: Start difference. First operand has 117 places, 118 transitions, 248 flow. Second operand 3 states and 368 transitions. [2022-12-11 20:21:56,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 118 transitions, 279 flow [2022-12-11 20:21:56,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 118 transitions, 269 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-11 20:21:56,926 INFO L231 Difference]: Finished difference. Result has 116 places, 115 transitions, 244 flow [2022-12-11 20:21:56,928 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=116, PETRI_TRANSITIONS=115} [2022-12-11 20:21:56,932 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, -1 predicate places. [2022-12-11 20:21:56,933 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 115 transitions, 244 flow [2022-12-11 20:21:56,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:21:56,933 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:21:56,933 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:21:56,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 20:21:56,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:21:56,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:21:56,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2125532005, now seen corresponding path program 1 times [2022-12-11 20:21:56,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:21:56,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921108286] [2022-12-11 20:21:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:21:56,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:21:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:21:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:21:57,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:21:57,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921108286] [2022-12-11 20:21:57,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921108286] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:21:57,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155175191] [2022-12-11 20:21:57,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:21:57,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:21:57,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:21:57,207 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) [2022-12-11 20:21:57,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 20:21:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:21:57,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-11 20:21:57,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:21:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:21:57,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 20:21:57,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155175191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:21:57,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 20:21:57,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-11 20:21:57,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943252537] [2022-12-11 20:21:57,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:21:57,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 20:21:57,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:21:57,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 20:21:57,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 20:21:57,443 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 131 [2022-12-11 20:21:57,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 115 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:21:57,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:21:57,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 131 [2022-12-11 20:21:57,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:21:57,508 INFO L130 PetriNetUnfolder]: 20/192 cut-off events. [2022-12-11 20:21:57,508 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-12-11 20:21:57,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 192 events. 20/192 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 550 event pairs, 7 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 164. Up to 28 conditions per place. [2022-12-11 20:21:57,514 INFO L137 encePairwiseOnDemand]: 128/131 looper letters, 15 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2022-12-11 20:21:57,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 120 transitions, 289 flow [2022-12-11 20:21:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 20:21:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 20:21:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2022-12-11 20:21:57,516 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9083969465648855 [2022-12-11 20:21:57,517 INFO L175 Difference]: Start difference. First operand has 116 places, 115 transitions, 244 flow. Second operand 3 states and 357 transitions. [2022-12-11 20:21:57,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 120 transitions, 289 flow [2022-12-11 20:21:57,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 20:21:57,521 INFO L231 Difference]: Finished difference. Result has 118 places, 116 transitions, 254 flow [2022-12-11 20:21:57,522 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=118, PETRI_TRANSITIONS=116} [2022-12-11 20:21:57,523 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 1 predicate places. [2022-12-11 20:21:57,523 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 116 transitions, 254 flow [2022-12-11 20:21:57,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:21:57,524 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:21:57,524 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:21:57,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-11 20:21:57,730 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 [2022-12-11 20:21:57,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:21:57,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:21:57,731 INFO L85 PathProgramCache]: Analyzing trace with hash 744158185, now seen corresponding path program 1 times [2022-12-11 20:21:57,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:21:57,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134856188] [2022-12-11 20:21:57,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:21:57,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:21:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:21:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:21:57,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:21:57,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134856188] [2022-12-11 20:21:57,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134856188] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:21:57,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148676299] [2022-12-11 20:21:57,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:21:57,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:21:57,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:21:57,896 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) [2022-12-11 20:21:57,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 20:21:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:21:58,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-11 20:21:58,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:21:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:21:58,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:21:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:21:58,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148676299] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:21:58,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:21:58,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-11 20:21:58,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20473417] [2022-12-11 20:21:58,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:21:58,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:21:58,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:21:58,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:21:58,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:21:58,127 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 131 [2022-12-11 20:21:58,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 116 transitions, 254 flow. Second operand has 10 states, 10 states have (on average 116.1) internal successors, (1161), 10 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:21:58,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:21:58,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 131 [2022-12-11 20:21:58,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:21:58,236 INFO L130 PetriNetUnfolder]: 26/226 cut-off events. [2022-12-11 20:21:58,236 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 20:21:58,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 226 events. 26/226 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 548 event pairs, 4 based on Foata normal form. 4/220 useless extension candidates. Maximal degree in co-relation 261. Up to 17 conditions per place. [2022-12-11 20:21:58,239 INFO L137 encePairwiseOnDemand]: 125/131 looper letters, 18 selfloop transitions, 9 changer transitions 0/131 dead transitions. [2022-12-11 20:21:58,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 131 transitions, 347 flow [2022-12-11 20:21:58,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:21:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:21:58,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1055 transitions. [2022-12-11 20:21:58,243 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8948261238337574 [2022-12-11 20:21:58,243 INFO L175 Difference]: Start difference. First operand has 118 places, 116 transitions, 254 flow. Second operand 9 states and 1055 transitions. [2022-12-11 20:21:58,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 131 transitions, 347 flow [2022-12-11 20:21:58,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 131 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 20:21:58,248 INFO L231 Difference]: Finished difference. Result has 128 places, 122 transitions, 302 flow [2022-12-11 20:21:58,249 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=302, PETRI_PLACES=128, PETRI_TRANSITIONS=122} [2022-12-11 20:21:58,250 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 11 predicate places. [2022-12-11 20:21:58,250 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 122 transitions, 302 flow [2022-12-11 20:21:58,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 116.1) internal successors, (1161), 10 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:21:58,251 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:21:58,251 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:21:58,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 20:21:58,459 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,SelfDestructingSolverStorable2 [2022-12-11 20:21:58,460 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:21:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:21:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash 490276105, now seen corresponding path program 2 times [2022-12-11 20:21:58,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:21:58,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286868820] [2022-12-11 20:21:58,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:21:58,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:21:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:21:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-11 20:21:58,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:21:58,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286868820] [2022-12-11 20:21:58,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286868820] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:21:58,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062075127] [2022-12-11 20:21:58,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 20:21:58,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:21:58,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:21:58,633 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) [2022-12-11 20:21:58,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 20:21:58,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 20:21:58,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:21:58,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-11 20:21:58,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:21:58,830 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-11 20:21:58,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 20:21:58,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062075127] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:21:58,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 20:21:58,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-11 20:21:58,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477618384] [2022-12-11 20:21:58,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:21:58,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 20:21:58,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:21:58,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 20:21:58,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-11 20:21:58,834 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 131 [2022-12-11 20:21:58,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 122 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:21:58,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:21:58,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 131 [2022-12-11 20:21:58,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:21:59,062 INFO L130 PetriNetUnfolder]: 307/1226 cut-off events. [2022-12-11 20:21:59,063 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-12-11 20:21:59,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 1226 events. 307/1226 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7083 event pairs, 41 based on Foata normal form. 0/1114 useless extension candidates. Maximal degree in co-relation 1515. Up to 186 conditions per place. [2022-12-11 20:21:59,073 INFO L137 encePairwiseOnDemand]: 122/131 looper letters, 32 selfloop transitions, 18 changer transitions 0/157 dead transitions. [2022-12-11 20:21:59,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 157 transitions, 478 flow [2022-12-11 20:21:59,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 20:21:59,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 20:21:59,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 823 transitions. [2022-12-11 20:21:59,082 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8974918211559433 [2022-12-11 20:21:59,082 INFO L175 Difference]: Start difference. First operand has 128 places, 122 transitions, 302 flow. Second operand 7 states and 823 transitions. [2022-12-11 20:21:59,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 157 transitions, 478 flow [2022-12-11 20:21:59,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 157 transitions, 472 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-11 20:21:59,092 INFO L231 Difference]: Finished difference. Result has 139 places, 140 transitions, 436 flow [2022-12-11 20:21:59,093 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=139, PETRI_TRANSITIONS=140} [2022-12-11 20:21:59,094 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 22 predicate places. [2022-12-11 20:21:59,094 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 140 transitions, 436 flow [2022-12-11 20:21:59,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:21:59,095 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:21:59,095 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:21:59,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 20:21:59,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:21:59,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:21:59,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:21:59,302 INFO L85 PathProgramCache]: Analyzing trace with hash 12643131, now seen corresponding path program 3 times [2022-12-11 20:21:59,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:21:59,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503271819] [2022-12-11 20:21:59,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:21:59,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:21:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:21:59,441 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-11 20:21:59,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:21:59,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503271819] [2022-12-11 20:21:59,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503271819] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:21:59,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145416284] [2022-12-11 20:21:59,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 20:21:59,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:21:59,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:21:59,443 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:21:59,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 20:21:59,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-11 20:21:59,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:21:59,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-11 20:21:59,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:21:59,641 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-11 20:21:59,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:21:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-11 20:21:59,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145416284] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:21:59,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:21:59,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-11 20:21:59,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412501566] [2022-12-11 20:21:59,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:21:59,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:21:59,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:21:59,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:21:59,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:21:59,709 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 131 [2022-12-11 20:21:59,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 140 transitions, 436 flow. Second operand has 10 states, 10 states have (on average 114.7) internal successors, (1147), 10 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:21:59,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:21:59,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 131 [2022-12-11 20:21:59,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:21:59,948 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([358] thread1EXIT-->L915-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem16#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem16#1=|v_ULTIMATE.start_main_#t~mem16#1_5|, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem16#1=|v_ULTIMATE.start_main_#t~mem16#1_5|, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4} AuxVars[] AssignedVars[][148], [Black: 1076#true, 113#L915-2true, Black: 1219#(<= 0 ~num~0), 1898#(< thread2Thread1of1ForFork1_~j~0 4), Black: 386#(<= thread2Thread1of1ForFork1_~j~0 0), Black: 133#(= thread1Thread1of1ForFork0_~i~0 0), Black: 425#(<= thread1Thread1of1ForFork0_~i~0 1), 1080#(<= 1 ~num~0), Black: 836#(< thread1Thread1of1ForFork0_~i~0 4), 15#L897true, 421#true, Black: 1465#(and (<= 0 |thread1Thread1of1ForFork0_#t~post6|) (<= 0 ~num~0)), Black: 1289#(<= 0 |thread1Thread1of1ForFork0_#t~post6|), Black: 1467#(and (<= 0 |thread1Thread1of1ForFork0_#t~post6|) (<= 1 ~num~0))]) [2022-12-11 20:21:59,948 INFO L382 tUnfolder$Statistics]: this new event has 141 ancestors and is cut-off event [2022-12-11 20:21:59,949 INFO L385 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2022-12-11 20:21:59,949 INFO L385 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2022-12-11 20:21:59,949 INFO L385 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2022-12-11 20:21:59,966 INFO L130 PetriNetUnfolder]: 327/1518 cut-off events. [2022-12-11 20:21:59,966 INFO L131 PetriNetUnfolder]: For 822/913 co-relation queries the response was YES. [2022-12-11 20:21:59,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3144 conditions, 1518 events. 327/1518 cut-off events. For 822/913 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10261 event pairs, 31 based on Foata normal form. 54/1524 useless extension candidates. Maximal degree in co-relation 2814. Up to 173 conditions per place. [2022-12-11 20:21:59,979 INFO L137 encePairwiseOnDemand]: 125/131 looper letters, 22 selfloop transitions, 9 changer transitions 0/157 dead transitions. [2022-12-11 20:21:59,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 157 transitions, 541 flow [2022-12-11 20:21:59,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:21:59,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:21:59,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1041 transitions. [2022-12-11 20:21:59,982 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8829516539440203 [2022-12-11 20:21:59,982 INFO L175 Difference]: Start difference. First operand has 139 places, 140 transitions, 436 flow. Second operand 9 states and 1041 transitions. [2022-12-11 20:21:59,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 157 transitions, 541 flow [2022-12-11 20:21:59,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 157 transitions, 541 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-11 20:21:59,990 INFO L231 Difference]: Finished difference. Result has 150 places, 146 transitions, 486 flow [2022-12-11 20:21:59,990 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=486, PETRI_PLACES=150, PETRI_TRANSITIONS=146} [2022-12-11 20:21:59,992 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 33 predicate places. [2022-12-11 20:21:59,992 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 146 transitions, 486 flow [2022-12-11 20:21:59,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 114.7) internal successors, (1147), 10 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:21:59,993 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:21:59,993 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:22:00,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-11 20:22:00,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:22:00,202 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:22:00,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:22:00,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1676024475, now seen corresponding path program 4 times [2022-12-11 20:22:00,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:22:00,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581036920] [2022-12-11 20:22:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:22:00,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:22:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:22:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-11 20:22:00,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:22:00,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581036920] [2022-12-11 20:22:00,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581036920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:22:00,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:22:00,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 20:22:00,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053871206] [2022-12-11 20:22:00,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:22:00,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 20:22:00,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:22:00,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 20:22:00,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 20:22:00,369 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 131 [2022-12-11 20:22:00,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 146 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:22:00,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:22:00,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 131 [2022-12-11 20:22:00,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:22:00,504 INFO L130 PetriNetUnfolder]: 125/884 cut-off events. [2022-12-11 20:22:00,504 INFO L131 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2022-12-11 20:22:00,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 884 events. 125/884 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4627 event pairs, 14 based on Foata normal form. 92/976 useless extension candidates. Maximal degree in co-relation 1489. Up to 127 conditions per place. [2022-12-11 20:22:00,510 INFO L137 encePairwiseOnDemand]: 123/131 looper letters, 16 selfloop transitions, 8 changer transitions 0/138 dead transitions. [2022-12-11 20:22:00,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 138 transitions, 482 flow [2022-12-11 20:22:00,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 20:22:00,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 20:22:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2022-12-11 20:22:00,512 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8575063613231552 [2022-12-11 20:22:00,512 INFO L175 Difference]: Start difference. First operand has 150 places, 146 transitions, 486 flow. Second operand 3 states and 337 transitions. [2022-12-11 20:22:00,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 138 transitions, 482 flow [2022-12-11 20:22:00,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 138 transitions, 462 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-12-11 20:22:00,517 INFO L231 Difference]: Finished difference. Result has 148 places, 136 transitions, 424 flow [2022-12-11 20:22:00,517 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=148, PETRI_TRANSITIONS=136} [2022-12-11 20:22:00,517 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 31 predicate places. [2022-12-11 20:22:00,518 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 136 transitions, 424 flow [2022-12-11 20:22:00,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:22:00,518 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:22:00,518 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:22:00,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 20:22:00,519 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:22:00,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:22:00,519 INFO L85 PathProgramCache]: Analyzing trace with hash -857679297, now seen corresponding path program 5 times [2022-12-11 20:22:00,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:22:00,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625790745] [2022-12-11 20:22:00,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:22:00,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:22:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:22:00,728 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-11 20:22:00,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:22:00,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625790745] [2022-12-11 20:22:00,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625790745] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:22:00,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672077671] [2022-12-11 20:22:00,729 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-11 20:22:00,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:22:00,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:22:00,730 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:22:00,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 20:22:00,883 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-12-11 20:22:00,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:22:00,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-11 20:22:00,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:22:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-11 20:22:01,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:22:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-11 20:22:01,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672077671] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:22:01,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:22:01,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-12-11 20:22:01,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036792516] [2022-12-11 20:22:01,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:22:01,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 20:22:01,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:22:01,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 20:22:01,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-12-11 20:22:01,181 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 131 [2022-12-11 20:22:01,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 136 transitions, 424 flow. Second operand has 16 states, 16 states have (on average 108.875) internal successors, (1742), 16 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:22:01,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:22:01,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 131 [2022-12-11 20:22:01,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:22:03,195 INFO L130 PetriNetUnfolder]: 875/3502 cut-off events. [2022-12-11 20:22:03,196 INFO L131 PetriNetUnfolder]: For 1638/1638 co-relation queries the response was YES. [2022-12-11 20:22:03,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8177 conditions, 3502 events. 875/3502 cut-off events. For 1638/1638 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 25120 event pairs, 40 based on Foata normal form. 54/3527 useless extension candidates. Maximal degree in co-relation 7779. Up to 359 conditions per place. [2022-12-11 20:22:03,220 INFO L137 encePairwiseOnDemand]: 119/131 looper letters, 231 selfloop transitions, 258 changer transitions 0/591 dead transitions. [2022-12-11 20:22:03,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 591 transitions, 3442 flow [2022-12-11 20:22:03,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-12-11 20:22:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2022-12-11 20:22:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 13321 transitions. [2022-12-11 20:22:03,248 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8335001877111751 [2022-12-11 20:22:03,249 INFO L175 Difference]: Start difference. First operand has 148 places, 136 transitions, 424 flow. Second operand 122 states and 13321 transitions. [2022-12-11 20:22:03,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 591 transitions, 3442 flow [2022-12-11 20:22:03,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 591 transitions, 3434 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 20:22:03,268 INFO L231 Difference]: Finished difference. Result has 340 places, 378 transitions, 2635 flow [2022-12-11 20:22:03,269 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=122, PETRI_FLOW=2635, PETRI_PLACES=340, PETRI_TRANSITIONS=378} [2022-12-11 20:22:03,269 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 223 predicate places. [2022-12-11 20:22:03,270 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 378 transitions, 2635 flow [2022-12-11 20:22:03,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 108.875) internal successors, (1742), 16 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:22:03,271 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:22:03,272 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:22:03,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-11 20:22:03,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:22:03,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:22:03,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:22:03,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1334772546, now seen corresponding path program 6 times [2022-12-11 20:22:03,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:22:03,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564919563] [2022-12-11 20:22:03,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:22:03,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:22:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:22:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-11 20:22:03,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:22:03,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564919563] [2022-12-11 20:22:03,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564919563] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:22:03,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666810571] [2022-12-11 20:22:03,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-11 20:22:03,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:22:03,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:22:03,678 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:22:03,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 20:22:03,896 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-12-11 20:22:03,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:22:03,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-11 20:22:03,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:22:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-11 20:22:03,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:22:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-11 20:22:04,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666810571] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:22:04,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:22:04,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-12-11 20:22:04,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079758227] [2022-12-11 20:22:04,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:22:04,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 20:22:04,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:22:04,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 20:22:04,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 20:22:04,059 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 131 [2022-12-11 20:22:04,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 378 transitions, 2635 flow. Second operand has 6 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:22:04,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:22:04,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 131 [2022-12-11 20:22:04,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:22:04,284 INFO L130 PetriNetUnfolder]: 162/940 cut-off events. [2022-12-11 20:22:04,284 INFO L131 PetriNetUnfolder]: For 7442/7468 co-relation queries the response was YES. [2022-12-11 20:22:04,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3255 conditions, 940 events. 162/940 cut-off events. For 7442/7468 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3932 event pairs, 25 based on Foata normal form. 68/995 useless extension candidates. Maximal degree in co-relation 2827. Up to 68 conditions per place. [2022-12-11 20:22:04,299 INFO L137 encePairwiseOnDemand]: 120/131 looper letters, 18 selfloop transitions, 11 changer transitions 0/260 dead transitions. [2022-12-11 20:22:04,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 260 transitions, 1652 flow [2022-12-11 20:22:04,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 20:22:04,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 20:22:04,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 899 transitions. [2022-12-11 20:22:04,301 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.857824427480916 [2022-12-11 20:22:04,301 INFO L175 Difference]: Start difference. First operand has 340 places, 378 transitions, 2635 flow. Second operand 8 states and 899 transitions. [2022-12-11 20:22:04,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 260 transitions, 1652 flow [2022-12-11 20:22:04,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 260 transitions, 1346 flow, removed 64 selfloop flow, removed 52 redundant places. [2022-12-11 20:22:04,339 INFO L231 Difference]: Finished difference. Result has 251 places, 253 transitions, 1304 flow [2022-12-11 20:22:04,339 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1304, PETRI_PLACES=251, PETRI_TRANSITIONS=253} [2022-12-11 20:22:04,340 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 134 predicate places. [2022-12-11 20:22:04,340 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 253 transitions, 1304 flow [2022-12-11 20:22:04,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:22:04,340 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:22:04,341 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:22:04,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-11 20:22:04,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:22:04,547 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:22:04,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:22:04,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1657306242, now seen corresponding path program 7 times [2022-12-11 20:22:04,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:22:04,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840940009] [2022-12-11 20:22:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:22:04,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:22:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:22:05,372 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 4 proven. 137 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 20:22:05,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:22:05,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840940009] [2022-12-11 20:22:05,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840940009] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:22:05,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136666583] [2022-12-11 20:22:05,373 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-11 20:22:05,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:22:05,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:22:05,380 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:22:05,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-11 20:22:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:22:05,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-11 20:22:05,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:22:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 4 proven. 137 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 20:22:06,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:22:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:22:06,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136666583] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:22:06,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:22:06,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 43 [2022-12-11 20:22:06,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567617775] [2022-12-11 20:22:06,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:22:06,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-11 20:22:06,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:22:06,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-11 20:22:06,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1677, Unknown=0, NotChecked=0, Total=1806 [2022-12-11 20:22:06,758 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 131 [2022-12-11 20:22:06,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 253 transitions, 1304 flow. Second operand has 43 states, 43 states have (on average 109.93023255813954) internal successors, (4727), 43 states have internal predecessors, (4727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:22:06,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:22:06,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 131 [2022-12-11 20:22:06,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:22:07,496 INFO L130 PetriNetUnfolder]: 151/891 cut-off events. [2022-12-11 20:22:07,496 INFO L131 PetriNetUnfolder]: For 3274/3314 co-relation queries the response was YES. [2022-12-11 20:22:07,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 891 events. 151/891 cut-off events. For 3274/3314 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3648 event pairs, 23 based on Foata normal form. 32/912 useless extension candidates. Maximal degree in co-relation 2395. Up to 55 conditions per place. [2022-12-11 20:22:07,503 INFO L137 encePairwiseOnDemand]: 122/131 looper letters, 0 selfloop transitions, 0 changer transitions 262/262 dead transitions. [2022-12-11 20:22:07,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 262 transitions, 1500 flow [2022-12-11 20:22:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-11 20:22:07,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-11 20:22:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2200 transitions. [2022-12-11 20:22:07,506 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8396946564885496 [2022-12-11 20:22:07,506 INFO L175 Difference]: Start difference. First operand has 251 places, 253 transitions, 1304 flow. Second operand 20 states and 2200 transitions. [2022-12-11 20:22:07,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 262 transitions, 1500 flow [2022-12-11 20:22:07,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 262 transitions, 1476 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-12-11 20:22:07,532 INFO L231 Difference]: Finished difference. Result has 261 places, 0 transitions, 0 flow [2022-12-11 20:22:07,532 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=0, PETRI_PLACES=261, PETRI_TRANSITIONS=0} [2022-12-11 20:22:07,532 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 144 predicate places. [2022-12-11 20:22:07,533 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 0 transitions, 0 flow [2022-12-11 20:22:07,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 109.93023255813954) internal successors, (4727), 43 states have internal predecessors, (4727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:22:07,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-11 20:22:07,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-11 20:22:07,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-11 20:22:07,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-11 20:22:07,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:22:07,743 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1] [2022-12-11 20:22:07,745 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 20:22:07,745 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 20:22:07,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 08:22:07 BasicIcfg [2022-12-11 20:22:07,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 20:22:07,749 INFO L158 Benchmark]: Toolchain (without parser) took 12777.95ms. Allocated memory was 189.8MB in the beginning and 309.3MB in the end (delta: 119.5MB). Free memory was 156.2MB in the beginning and 162.2MB in the end (delta: -6.0MB). Peak memory consumption was 114.1MB. Max. memory is 8.0GB. [2022-12-11 20:22:07,749 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 189.8MB. Free memory is still 167.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 20:22:07,749 INFO L158 Benchmark]: CACSL2BoogieTranslator took 552.51ms. Allocated memory is still 189.8MB. Free memory was 156.2MB in the beginning and 129.5MB in the end (delta: 26.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-12-11 20:22:07,750 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.63ms. Allocated memory is still 189.8MB. Free memory was 129.5MB in the beginning and 127.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 20:22:07,750 INFO L158 Benchmark]: Boogie Preprocessor took 22.20ms. Allocated memory is still 189.8MB. Free memory was 127.4MB in the beginning and 125.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 20:22:07,750 INFO L158 Benchmark]: RCFGBuilder took 419.55ms. Allocated memory is still 189.8MB. Free memory was 125.3MB in the beginning and 109.0MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-12-11 20:22:07,751 INFO L158 Benchmark]: TraceAbstraction took 11714.00ms. Allocated memory was 189.8MB in the beginning and 309.3MB in the end (delta: 119.5MB). Free memory was 108.0MB in the beginning and 162.2MB in the end (delta: -54.2MB). Peak memory consumption was 65.9MB. Max. memory is 8.0GB. [2022-12-11 20:22:07,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 189.8MB. Free memory is still 167.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 552.51ms. Allocated memory is still 189.8MB. Free memory was 156.2MB in the beginning and 129.5MB in the end (delta: 26.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.63ms. Allocated memory is still 189.8MB. Free memory was 129.5MB in the beginning and 127.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.20ms. Allocated memory is still 189.8MB. Free memory was 127.4MB in the beginning and 125.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 419.55ms. Allocated memory is still 189.8MB. Free memory was 125.3MB in the beginning and 109.0MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 11714.00ms. Allocated memory was 189.8MB in the beginning and 309.3MB in the end (delta: 119.5MB). Free memory was 108.0MB in the beginning and 162.2MB in the end (delta: -54.2MB). Peak memory consumption was 65.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 919]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 167 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.6s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 971 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 971 mSDsluCounter, 358 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 283 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1398 IncrementalHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 75 mSDtfsCounter, 1398 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1987 GetRequests, 1752 SyntacticMatches, 15 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7612 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2635occurred in iteration=7, InterpolantAutomatonStates: 184, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 2151 NumberOfCodeBlocks, 2151 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2866 ConstructedInterpolants, 0 QuantifiedInterpolants, 7935 SizeOfPredicates, 26 NumberOfNonLiveVariables, 2533 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 21 InterpolantComputations, 4 PerfectInterpolantSequences, 814/1369 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-11 20:22:07,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...