/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 18:44:23,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 18:44:23,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 18:44:23,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 18:44:23,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 18:44:23,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 18:44:23,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 18:44:23,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 18:44:23,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 18:44:23,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 18:44:23,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 18:44:23,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 18:44:23,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 18:44:23,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 18:44:23,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 18:44:23,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 18:44:23,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 18:44:23,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 18:44:23,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 18:44:23,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 18:44:23,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 18:44:23,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 18:44:23,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 18:44:23,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 18:44:23,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 18:44:23,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 18:44:23,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 18:44:23,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 18:44:23,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 18:44:23,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 18:44:23,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 18:44:23,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 18:44:23,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 18:44:23,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 18:44:23,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 18:44:23,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 18:44:23,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 18:44:23,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 18:44:23,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 18:44:23,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 18:44:23,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 18:44:23,672 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 [2022-12-06 18:44:23,692 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 18:44:23,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 18:44:23,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 18:44:23,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 18:44:23,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 18:44:23,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 18:44:23,695 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 18:44:23,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 18:44:23,695 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 18:44:23,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 18:44:23,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 18:44:23,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 18:44:23,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 18:44:23,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 18:44:23,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 18:44:23,696 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 18:44:23,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 18:44:23,697 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 18:44:23,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 18:44:23,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 18:44:23,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 18:44:23,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 18:44:23,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 18:44:23,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 18:44:23,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 18:44:23,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 18:44:23,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 18:44:23,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 18:44:23,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 18:44:23,699 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 18:44:23,699 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 18:44:23,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 18:44:23,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 18:44:24,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 18:44:24,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 18:44:24,014 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 18:44:24,014 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 18:44:24,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2022-12-06 18:44:25,142 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 18:44:25,412 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 18:44:25,413 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2022-12-06 18:44:25,424 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/283d7cc62/d829269e7d32453280d1f3aead346cd7/FLAG0841c3017 [2022-12-06 18:44:25,438 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/283d7cc62/d829269e7d32453280d1f3aead346cd7 [2022-12-06 18:44:25,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 18:44:25,444 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 18:44:25,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 18:44:25,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 18:44:25,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 18:44:25,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:44:25" (1/1) ... [2022-12-06 18:44:25,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f90e7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:25, skipping insertion in model container [2022-12-06 18:44:25,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:44:25" (1/1) ... [2022-12-06 18:44:25,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 18:44:25,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 18:44:25,852 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_bad.i[39758,39771] [2022-12-06 18:44:25,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 18:44:25,877 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 18:44:25,937 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_bad.i[39758,39771] [2022-12-06 18:44:25,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 18:44:25,995 INFO L208 MainTranslator]: Completed translation [2022-12-06 18:44:25,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:25 WrapperNode [2022-12-06 18:44:25,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 18:44:25,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 18:44:25,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 18:44:25,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 18:44:26,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:25" (1/1) ... [2022-12-06 18:44:26,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:25" (1/1) ... [2022-12-06 18:44:26,065 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-12-06 18:44:26,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 18:44:26,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 18:44:26,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 18:44:26,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 18:44:26,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:25" (1/1) ... [2022-12-06 18:44:26,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:25" (1/1) ... [2022-12-06 18:44:26,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:25" (1/1) ... [2022-12-06 18:44:26,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:25" (1/1) ... [2022-12-06 18:44:26,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:25" (1/1) ... [2022-12-06 18:44:26,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:25" (1/1) ... [2022-12-06 18:44:26,096 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:25" (1/1) ... [2022-12-06 18:44:26,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:25" (1/1) ... [2022-12-06 18:44:26,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 18:44:26,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 18:44:26,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 18:44:26,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 18:44:26,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:25" (1/1) ... [2022-12-06 18:44:26,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 18:44:26,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:44:26,145 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) [2022-12-06 18:44:26,169 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 [2022-12-06 18:44:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 18:44:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 18:44:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-06 18:44:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 18:44:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 18:44:26,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 18:44:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 18:44:26,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 18:44:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 18:44:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-06 18:44:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 18:44:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 18:44:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 18:44:26,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 18:44:26,189 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 18:44:26,382 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 18:44:26,384 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 18:44:26,552 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 18:44:26,559 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 18:44:26,559 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-06 18:44:26,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:44:26 BoogieIcfgContainer [2022-12-06 18:44:26,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 18:44:26,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 18:44:26,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 18:44:26,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 18:44:26,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:44:25" (1/3) ... [2022-12-06 18:44:26,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759d95a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:44:26, skipping insertion in model container [2022-12-06 18:44:26,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:25" (2/3) ... [2022-12-06 18:44:26,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759d95a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:44:26, skipping insertion in model container [2022-12-06 18:44:26,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:44:26" (3/3) ... [2022-12-06 18:44:26,567 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2022-12-06 18:44:26,583 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 18:44:26,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 18:44:26,583 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 18:44:26,651 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 18:44:26,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 131 transitions, 278 flow [2022-12-06 18:44:26,767 INFO L130 PetriNetUnfolder]: 10/129 cut-off events. [2022-12-06 18:44:26,767 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 18:44:26,772 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. [2022-12-06 18:44:26,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 131 transitions, 278 flow [2022-12-06 18:44:26,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 118 transitions, 248 flow [2022-12-06 18:44:26,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 18:44:26,797 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;@47a74125, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 18:44:26,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 18:44:26,844 INFO L130 PetriNetUnfolder]: 8/117 cut-off events. [2022-12-06 18:44:26,845 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 18:44:26,845 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:44:26,846 INFO L213 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] [2022-12-06 18:44:26,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:44:26,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:44:26,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1760909140, now seen corresponding path program 1 times [2022-12-06 18:44:26,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:44:26,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314542647] [2022-12-06 18:44:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:44:26,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:44:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:44:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:44:27,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:44:27,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314542647] [2022-12-06 18:44:27,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314542647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:44:27,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:44:27,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 18:44:27,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324814759] [2022-12-06 18:44:27,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:44:27,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 18:44:27,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:44:27,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 18:44:27,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 18:44:27,368 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 131 [2022-12-06 18:44:27,370 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) [2022-12-06 18:44:27,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:44:27,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 131 [2022-12-06 18:44:27,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:44:27,426 INFO L130 PetriNetUnfolder]: 16/170 cut-off events. [2022-12-06 18:44:27,427 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-06 18:44:27,428 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. [2022-12-06 18:44:27,430 INFO L137 encePairwiseOnDemand]: 124/131 looper letters, 12 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2022-12-06 18:44:27,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 118 transitions, 279 flow [2022-12-06 18:44:27,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 18:44:27,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 18:44:27,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2022-12-06 18:44:27,455 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9363867684478372 [2022-12-06 18:44:27,458 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 2 predicate places. [2022-12-06 18:44:27,458 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 118 transitions, 279 flow [2022-12-06 18:44:27,459 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) [2022-12-06 18:44:27,459 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:44:27,459 INFO L213 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] [2022-12-06 18:44:27,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 18:44:27,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:44:27,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:44:27,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2125532005, now seen corresponding path program 1 times [2022-12-06 18:44:27,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:44:27,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961463528] [2022-12-06 18:44:27,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:44:27,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:44:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:44:27,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:44:27,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:44:27,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961463528] [2022-12-06 18:44:27,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961463528] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:44:27,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138264704] [2022-12-06 18:44:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:44:27,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:44:27,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:44:27,654 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) [2022-12-06 18:44:27,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 18:44:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:44:27,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-06 18:44:27,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:44:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:44:27,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 18:44:27,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138264704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:44:27,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 18:44:27,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-06 18:44:27,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388138484] [2022-12-06 18:44:27,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:44:27,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 18:44:27,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:44:27,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 18:44:27,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-06 18:44:27,886 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 131 [2022-12-06 18:44:27,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 118 transitions, 279 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) [2022-12-06 18:44:27,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:44:27,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 131 [2022-12-06 18:44:27,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:44:27,974 INFO L130 PetriNetUnfolder]: 34/278 cut-off events. [2022-12-06 18:44:27,975 INFO L131 PetriNetUnfolder]: For 122/136 co-relation queries the response was YES. [2022-12-06 18:44:27,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 278 events. 34/278 cut-off events. For 122/136 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1026 event pairs, 7 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 245. Up to 44 conditions per place. [2022-12-06 18:44:27,982 INFO L137 encePairwiseOnDemand]: 128/131 looper letters, 16 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2022-12-06 18:44:27,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 123 transitions, 330 flow [2022-12-06 18:44:27,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 18:44:27,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 18:44:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2022-12-06 18:44:27,988 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9083969465648855 [2022-12-06 18:44:27,988 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 4 predicate places. [2022-12-06 18:44:27,989 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 123 transitions, 330 flow [2022-12-06 18:44:27,989 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) [2022-12-06 18:44:27,989 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:44:27,989 INFO L213 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] [2022-12-06 18:44:27,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-06 18:44:28,190 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 [2022-12-06 18:44:28,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:44:28,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:44:28,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2112641373, now seen corresponding path program 1 times [2022-12-06 18:44:28,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:44:28,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855375892] [2022-12-06 18:44:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:44:28,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:44:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:44:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:44:28,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:44:28,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855375892] [2022-12-06 18:44:28,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855375892] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:44:28,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449636747] [2022-12-06 18:44:28,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:44:28,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:44:28,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:44:28,417 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) [2022-12-06 18:44:28,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 18:44:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:44:28,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-06 18:44:28,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:44:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:44:28,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:44:28,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:44:28,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449636747] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:44:28,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:44:28,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-12-06 18:44:28,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776543098] [2022-12-06 18:44:28,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:44:28,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-06 18:44:28,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:44:28,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-06 18:44:28,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-06 18:44:28,737 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 131 [2022-12-06 18:44:28,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 123 transitions, 330 flow. Second operand has 9 states, 9 states have (on average 116.55555555555556) internal successors, (1049), 9 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:44:28,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:44:28,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 131 [2022-12-06 18:44:28,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:44:28,909 INFO L130 PetriNetUnfolder]: 43/317 cut-off events. [2022-12-06 18:44:28,909 INFO L131 PetriNetUnfolder]: For 216/228 co-relation queries the response was YES. [2022-12-06 18:44:28,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 317 events. 43/317 cut-off events. For 216/228 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1084 event pairs, 9 based on Foata normal form. 2/290 useless extension candidates. Maximal degree in co-relation 370. Up to 51 conditions per place. [2022-12-06 18:44:28,917 INFO L137 encePairwiseOnDemand]: 125/131 looper letters, 19 selfloop transitions, 9 changer transitions 0/135 dead transitions. [2022-12-06 18:44:28,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 135 transitions, 460 flow [2022-12-06 18:44:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 18:44:28,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 18:44:28,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1055 transitions. [2022-12-06 18:44:28,922 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8948261238337574 [2022-12-06 18:44:28,923 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 12 predicate places. [2022-12-06 18:44:28,924 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 135 transitions, 460 flow [2022-12-06 18:44:28,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.55555555555556) internal successors, (1049), 9 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:44:28,925 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:44:28,925 INFO L213 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] [2022-12-06 18:44:28,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 18:44:29,131 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 [2022-12-06 18:44:29,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:44:29,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:44:29,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1351302483, now seen corresponding path program 2 times [2022-12-06 18:44:29,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:44:29,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961626694] [2022-12-06 18:44:29,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:44:29,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:44:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:44:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 18:44:29,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:44:29,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961626694] [2022-12-06 18:44:29,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961626694] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:44:29,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135389343] [2022-12-06 18:44:29,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 18:44:29,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:44:29,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:44:29,324 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) [2022-12-06 18:44:29,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 18:44:29,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 18:44:29,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:44:29,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-06 18:44:29,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:44:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 18:44:29,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 18:44:29,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135389343] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:44:29,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 18:44:29,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-06 18:44:29,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702332595] [2022-12-06 18:44:29,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:44:29,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:44:29,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:44:29,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:44:29,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-06 18:44:29,526 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 131 [2022-12-06 18:44:29,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 135 transitions, 460 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) [2022-12-06 18:44:29,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:44:29,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 131 [2022-12-06 18:44:29,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:44:29,773 INFO L130 PetriNetUnfolder]: 328/1250 cut-off events. [2022-12-06 18:44:29,773 INFO L131 PetriNetUnfolder]: For 665/717 co-relation queries the response was YES. [2022-12-06 18:44:29,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2323 conditions, 1250 events. 328/1250 cut-off events. For 665/717 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7308 event pairs, 53 based on Foata normal form. 0/1094 useless extension candidates. Maximal degree in co-relation 2088. Up to 208 conditions per place. [2022-12-06 18:44:29,784 INFO L137 encePairwiseOnDemand]: 122/131 looper letters, 37 selfloop transitions, 18 changer transitions 0/167 dead transitions. [2022-12-06 18:44:29,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 167 transitions, 661 flow [2022-12-06 18:44:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 18:44:29,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 18:44:29,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 823 transitions. [2022-12-06 18:44:29,787 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8974918211559433 [2022-12-06 18:44:29,788 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 18 predicate places. [2022-12-06 18:44:29,789 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 167 transitions, 661 flow [2022-12-06 18:44:29,790 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) [2022-12-06 18:44:29,790 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:44:29,790 INFO L213 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] [2022-12-06 18:44:29,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-06 18:44:29,999 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 [2022-12-06 18:44:30,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:44:30,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:44:30,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1082691081, now seen corresponding path program 3 times [2022-12-06 18:44:30,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:44:30,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606109844] [2022-12-06 18:44:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:44:30,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:44:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:44:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-06 18:44:30,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:44:30,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606109844] [2022-12-06 18:44:30,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606109844] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:44:30,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616514411] [2022-12-06 18:44:30,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 18:44:30,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:44:30,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:44:30,142 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) [2022-12-06 18:44:30,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 18:44:30,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-06 18:44:30,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:44:30,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-06 18:44:30,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:44:30,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-06 18:44:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-06 18:44:30,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 18:44:30,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616514411] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:44:30,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 18:44:30,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-06 18:44:30,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983200420] [2022-12-06 18:44:30,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:44:30,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 18:44:30,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:44:30,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 18:44:30,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-06 18:44:30,348 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 131 [2022-12-06 18:44:30,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 167 transitions, 661 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:44:30,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:44:30,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 131 [2022-12-06 18:44:30,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:44:30,439 INFO L130 PetriNetUnfolder]: 106/622 cut-off events. [2022-12-06 18:44:30,440 INFO L131 PetriNetUnfolder]: For 1007/1098 co-relation queries the response was YES. [2022-12-06 18:44:30,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 622 events. 106/622 cut-off events. For 1007/1098 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3008 event pairs, 5 based on Foata normal form. 57/631 useless extension candidates. Maximal degree in co-relation 1065. Up to 95 conditions per place. [2022-12-06 18:44:30,444 INFO L137 encePairwiseOnDemand]: 123/131 looper letters, 30 selfloop transitions, 8 changer transitions 0/154 dead transitions. [2022-12-06 18:44:30,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 154 transitions, 730 flow [2022-12-06 18:44:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 18:44:30,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 18:44:30,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2022-12-06 18:44:30,445 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8575063613231552 [2022-12-06 18:44:30,446 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 19 predicate places. [2022-12-06 18:44:30,446 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 154 transitions, 730 flow [2022-12-06 18:44:30,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:44:30,447 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:44:30,447 INFO L213 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] [2022-12-06 18:44:30,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-06 18:44:30,653 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 [2022-12-06 18:44:30,653 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:44:30,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:44:30,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1341207763, now seen corresponding path program 4 times [2022-12-06 18:44:30,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:44:30,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139818466] [2022-12-06 18:44:30,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:44:30,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:44:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:44:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-06 18:44:30,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:44:30,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139818466] [2022-12-06 18:44:30,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139818466] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:44:30,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162644042] [2022-12-06 18:44:30,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 18:44:30,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:44:30,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:44:30,783 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) [2022-12-06 18:44:30,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 18:44:30,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 18:44:30,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:44:30,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 18:44:30,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:44:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-06 18:44:30,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 18:44:30,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162644042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:44:30,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 18:44:30,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2022-12-06 18:44:30,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543191393] [2022-12-06 18:44:30,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:44:30,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 18:44:30,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:44:30,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 18:44:30,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-06 18:44:30,990 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 131 [2022-12-06 18:44:30,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 154 transitions, 730 flow. Second operand has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:44:30,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:44:30,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 131 [2022-12-06 18:44:30,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:44:31,157 INFO L130 PetriNetUnfolder]: 114/678 cut-off events. [2022-12-06 18:44:31,158 INFO L131 PetriNetUnfolder]: For 1976/2163 co-relation queries the response was YES. [2022-12-06 18:44:31,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 678 events. 114/678 cut-off events. For 1976/2163 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3129 event pairs, 11 based on Foata normal form. 1/631 useless extension candidates. Maximal degree in co-relation 1354. Up to 118 conditions per place. [2022-12-06 18:44:31,162 INFO L137 encePairwiseOnDemand]: 120/131 looper letters, 34 selfloop transitions, 16 changer transitions 0/161 dead transitions. [2022-12-06 18:44:31,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 161 transitions, 913 flow [2022-12-06 18:44:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 18:44:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 18:44:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 899 transitions. [2022-12-06 18:44:31,164 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.857824427480916 [2022-12-06 18:44:31,165 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 26 predicate places. [2022-12-06 18:44:31,165 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 161 transitions, 913 flow [2022-12-06 18:44:31,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:44:31,166 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:44:31,166 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:44:31,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 18:44:31,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:44:31,373 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:44:31,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:44:31,373 INFO L85 PathProgramCache]: Analyzing trace with hash -572948933, now seen corresponding path program 5 times [2022-12-06 18:44:31,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:44:31,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218513096] [2022-12-06 18:44:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:44:31,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:44:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:44:31,557 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-06 18:44:31,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:44:31,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218513096] [2022-12-06 18:44:31,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218513096] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:44:31,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436638567] [2022-12-06 18:44:31,558 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 18:44:31,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:44:31,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:44:31,564 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) [2022-12-06 18:44:31,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 18:44:31,727 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-06 18:44:31,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:44:31,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-06 18:44:31,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:44:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-06 18:44:31,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:44:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-06 18:44:31,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436638567] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:44:31,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:44:31,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-12-06 18:44:31,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936508834] [2022-12-06 18:44:31,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:44:31,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-06 18:44:31,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:44:31,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-06 18:44:31,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-06 18:44:31,961 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 131 [2022-12-06 18:44:31,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 161 transitions, 913 flow. Second operand has 9 states, 9 states have (on average 114.55555555555556) internal successors, (1031), 9 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:44:31,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:44:31,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 131 [2022-12-06 18:44:31,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:44:32,138 INFO L130 PetriNetUnfolder]: 158/1007 cut-off events. [2022-12-06 18:44:32,138 INFO L131 PetriNetUnfolder]: For 2912/3158 co-relation queries the response was YES. [2022-12-06 18:44:32,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2664 conditions, 1007 events. 158/1007 cut-off events. For 2912/3158 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5548 event pairs, 8 based on Foata normal form. 3/942 useless extension candidates. Maximal degree in co-relation 2142. Up to 175 conditions per place. [2022-12-06 18:44:32,146 INFO L137 encePairwiseOnDemand]: 125/131 looper letters, 41 selfloop transitions, 9 changer transitions 0/173 dead transitions. [2022-12-06 18:44:32,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 173 transitions, 1122 flow [2022-12-06 18:44:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 18:44:32,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 18:44:32,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1038 transitions. [2022-12-06 18:44:32,148 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8804071246819338 [2022-12-06 18:44:32,149 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 34 predicate places. [2022-12-06 18:44:32,149 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 173 transitions, 1122 flow [2022-12-06 18:44:32,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.55555555555556) internal successors, (1031), 9 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:44:32,150 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:44:32,150 INFO L213 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] [2022-12-06 18:44:32,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-06 18:44:32,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:44:32,357 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:44:32,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:44:32,357 INFO L85 PathProgramCache]: Analyzing trace with hash -665739115, now seen corresponding path program 6 times [2022-12-06 18:44:32,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:44:32,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346284284] [2022-12-06 18:44:32,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:44:32,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:44:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:44:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 43 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-06 18:44:32,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:44:32,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346284284] [2022-12-06 18:44:32,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346284284] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:44:32,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375038209] [2022-12-06 18:44:32,571 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 18:44:32,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:44:32,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:44:32,576 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) [2022-12-06 18:44:32,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-06 18:44:32,732 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-06 18:44:32,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:44:32,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-06 18:44:32,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:44:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 43 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-06 18:44:32,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:44:32,872 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 43 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-06 18:44:32,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375038209] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:44:32,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:44:32,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-12-06 18:44:32,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110596405] [2022-12-06 18:44:32,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:44:32,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 18:44:32,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:44:32,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 18:44:32,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 18:44:32,875 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 131 [2022-12-06 18:44:32,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 173 transitions, 1122 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) [2022-12-06 18:44:32,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:44:32,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 131 [2022-12-06 18:44:32,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:44:32,992 INFO L130 PetriNetUnfolder]: 80/489 cut-off events. [2022-12-06 18:44:32,992 INFO L131 PetriNetUnfolder]: For 3648/3966 co-relation queries the response was YES. [2022-12-06 18:44:32,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1571 conditions, 489 events. 80/489 cut-off events. For 3648/3966 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1835 event pairs, 4 based on Foata normal form. 3/475 useless extension candidates. Maximal degree in co-relation 1198. Up to 98 conditions per place. [2022-12-06 18:44:32,995 INFO L137 encePairwiseOnDemand]: 122/131 looper letters, 37 selfloop transitions, 12 changer transitions 2/169 dead transitions. [2022-12-06 18:44:32,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 169 transitions, 1200 flow [2022-12-06 18:44:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 18:44:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 18:44:32,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 897 transitions. [2022-12-06 18:44:32,998 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8559160305343512 [2022-12-06 18:44:33,000 INFO L294 CegarLoopForPetriNet]: 117 programPoint places, 41 predicate places. [2022-12-06 18:44:33,000 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 169 transitions, 1200 flow [2022-12-06 18:44:33,001 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) [2022-12-06 18:44:33,001 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:44:33,001 INFO L213 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] [2022-12-06 18:44:33,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-06 18:44:33,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:44:33,208 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:44:33,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:44:33,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1967961863, now seen corresponding path program 7 times [2022-12-06 18:44:33,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:44:33,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59871865] [2022-12-06 18:44:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:44:33,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:44:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-06 18:44:33,248 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-06 18:44:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-06 18:44:33,310 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-06 18:44:33,311 INFO L373 BasicCegarLoop]: Counterexample is feasible [2022-12-06 18:44:33,312 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 18:44:33,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 18:44:33,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 18:44:33,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-06 18:44:33,314 INFO L458 BasicCegarLoop]: Path program histogram: [7, 1, 1] [2022-12-06 18:44:33,319 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 18:44:33,319 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 18:44:33,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:44:33 BasicIcfg [2022-12-06 18:44:33,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 18:44:33,420 INFO L158 Benchmark]: Toolchain (without parser) took 7976.02ms. Allocated memory was 196.1MB in the beginning and 321.9MB in the end (delta: 125.8MB). Free memory was 155.9MB in the beginning and 124.1MB in the end (delta: 31.7MB). Peak memory consumption was 158.1MB. Max. memory is 8.0GB. [2022-12-06 18:44:33,420 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 196.1MB. Free memory was 173.0MB in the beginning and 172.9MB in the end (delta: 83.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 18:44:33,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 551.80ms. Allocated memory is still 196.1MB. Free memory was 155.3MB in the beginning and 129.1MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-12-06 18:44:33,421 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.54ms. Allocated memory is still 196.1MB. Free memory was 129.1MB in the beginning and 127.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 18:44:33,421 INFO L158 Benchmark]: Boogie Preprocessor took 44.80ms. Allocated memory is still 196.1MB. Free memory was 127.0MB in the beginning and 124.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 18:44:33,421 INFO L158 Benchmark]: RCFGBuilder took 449.46ms. Allocated memory is still 196.1MB. Free memory was 124.9MB in the beginning and 108.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-12-06 18:44:33,421 INFO L158 Benchmark]: TraceAbstraction took 6856.91ms. Allocated memory was 196.1MB in the beginning and 321.9MB in the end (delta: 125.8MB). Free memory was 107.6MB in the beginning and 124.1MB in the end (delta: -16.5MB). Peak memory consumption was 109.8MB. Max. memory is 8.0GB. [2022-12-06 18:44:33,423 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 196.1MB. Free memory was 173.0MB in the beginning and 172.9MB in the end (delta: 83.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 551.80ms. Allocated memory is still 196.1MB. Free memory was 155.3MB in the beginning and 129.1MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 66.54ms. Allocated memory is still 196.1MB. Free memory was 129.1MB in the beginning and 127.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.80ms. Allocated memory is still 196.1MB. Free memory was 127.0MB in the beginning and 124.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 449.46ms. Allocated memory is still 196.1MB. Free memory was 124.9MB in the beginning and 108.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 6856.91ms. Allocated memory was 196.1MB in the beginning and 321.9MB in the end (delta: 125.8MB). Free memory was 107.6MB in the beginning and 124.1MB in the end (delta: -16.5MB). Peak memory consumption was 109.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 919]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L870] 0 int num; VAL [num=0] [L871] 0 unsigned long total; VAL [num=0, total=0] [L872] 0 int flag; VAL [flag=0, num=0, total=0] [L873] 0 pthread_mutex_t m; VAL [flag=0, m={3:0}, num=0, total=0] [L874] 0 pthread_cond_t empty, full; VAL [empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, total=0] [L907] 0 pthread_t t1, t2; VAL [empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L908] 0 num = 0 VAL [empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L909] 0 total = 0 VAL [empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-1, t1={7:0}, t2={6:0}, total=0] [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t2, 0, thread2, 0)=0, t1={7:0}, t2={6:0}, total=0] [L915] 0 \read(t1) VAL [\read(t1)=-1, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L876] 1 int i; VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, total=0] [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, total=0] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, total=0] [L890] 2 int j; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, total=0] [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=0, m={3:0}, num=1, total=0] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=0, m={3:0}, num=1, total=0] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=1, m={3:0}, num=1, total=1] [L878] COND FALSE 1 !(i < 3) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=1, m={3:0}, num=1, total=1] [L887] 1 return ((void *)0); VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=1, m={3:0}, num=1, total=1] [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, j++=1, m={3:0}, num=1, total=1] [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, j++=1, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=1] [L892] COND TRUE 2 j < 3 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L894] COND FALSE 2 !(num == 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L896] 2 total = total + j VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L897] 2 num-- VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=0, total=3] [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L902] 2 total = total + j VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=6] [L903] 2 flag = 1 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, total=6] [L904] 2 return ((void *)0); VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, total=6] [L916] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L917] COND TRUE 0 \read(flag) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - 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: 6.6s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 108 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 108 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 358 IncrementalHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 45 mSDtfsCounter, 358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1325 GetRequests, 1257 SyntacticMatches, 11 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1200occurred in iteration=8, InterpolantAutomatonStates: 50, 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, 0.6s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1987 NumberOfCodeBlocks, 1912 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2215 ConstructedInterpolants, 0 QuantifiedInterpolants, 3605 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2179 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 18 InterpolantComputations, 5 PerfectInterpolantSequences, 478/605 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-06 18:44:33,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...