/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 23:55:37,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 23:55:37,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 23:55:37,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 23:55:37,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 23:55:37,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 23:55:37,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 23:55:37,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 23:55:37,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 23:55:37,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 23:55:37,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 23:55:37,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 23:55:37,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 23:55:37,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 23:55:37,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 23:55:37,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 23:55:37,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 23:55:37,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 23:55:37,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 23:55:37,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 23:55:37,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 23:55:37,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 23:55:37,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 23:55:37,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 23:55:37,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 23:55:37,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 23:55:37,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 23:55:37,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 23:55:37,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 23:55:37,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 23:55:37,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 23:55:37,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 23:55:37,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 23:55:37,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 23:55:37,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 23:55:37,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 23:55:37,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 23:55:37,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 23:55:37,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 23:55:37,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 23:55:37,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 23:55:37,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 23:55:37,155 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 23:55:37,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 23:55:37,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 23:55:37,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 23:55:37,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 23:55:37,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 23:55:37,158 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 23:55:37,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 23:55:37,159 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 23:55:37,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 23:55:37,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 23:55:37,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 23:55:37,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 23:55:37,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 23:55:37,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 23:55:37,160 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 23:55:37,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 23:55:37,160 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 23:55:37,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 23:55:37,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 23:55:37,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 23:55:37,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 23:55:37,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 23:55:37,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:55:37,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 23:55:37,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 23:55:37,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 23:55:37,162 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 23:55:37,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 23:55:37,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 23:55:37,162 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 23:55:37,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-11 23:55:37,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 23:55:37,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 23:55:37,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 23:55:37,462 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 23:55:37,462 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 23:55:37,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2022-12-11 23:55:38,632 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 23:55:38,898 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 23:55:38,899 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2022-12-11 23:55:38,911 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1078ee1cb/4687cd96b5a94b6384cdcacb487a125f/FLAG77de214bd [2022-12-11 23:55:38,925 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1078ee1cb/4687cd96b5a94b6384cdcacb487a125f [2022-12-11 23:55:38,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 23:55:38,928 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 23:55:38,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 23:55:38,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 23:55:38,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 23:55:38,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:55:38" (1/1) ... [2022-12-11 23:55:38,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f361651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:55:38, skipping insertion in model container [2022-12-11 23:55:38,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:55:38" (1/1) ... [2022-12-11 23:55:38,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 23:55:38,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 23:55:39,095 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i[1097,1110] [2022-12-11 23:55:39,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:55:39,261 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 23:55:39,274 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i[1097,1110] [2022-12-11 23:55:39,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:55:39,349 INFO L208 MainTranslator]: Completed translation [2022-12-11 23:55:39,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:55:39 WrapperNode [2022-12-11 23:55:39,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 23:55:39,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 23:55:39,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 23:55:39,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 23:55:39,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:55:39" (1/1) ... [2022-12-11 23:55:39,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:55:39" (1/1) ... [2022-12-11 23:55:39,407 INFO L138 Inliner]: procedures = 162, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-12-11 23:55:39,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 23:55:39,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 23:55:39,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 23:55:39,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 23:55:39,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:55:39" (1/1) ... [2022-12-11 23:55:39,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:55:39" (1/1) ... [2022-12-11 23:55:39,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:55:39" (1/1) ... [2022-12-11 23:55:39,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:55:39" (1/1) ... [2022-12-11 23:55:39,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:55:39" (1/1) ... [2022-12-11 23:55:39,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:55:39" (1/1) ... [2022-12-11 23:55:39,437 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:55:39" (1/1) ... [2022-12-11 23:55:39,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:55:39" (1/1) ... [2022-12-11 23:55:39,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 23:55:39,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 23:55:39,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 23:55:39,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 23:55:39,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:55:39" (1/1) ... [2022-12-11 23:55:39,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:55:39,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:55:39,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 23:55:39,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 23:55:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 23:55:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-11 23:55:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 23:55:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 23:55:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-11 23:55:39,519 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-11 23:55:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 23:55:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 23:55:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 23:55:39,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 23:55:39,521 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 23:55:39,653 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 23:55:39,654 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 23:55:39,802 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 23:55:39,808 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 23:55:39,808 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-11 23:55:39,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:55:39 BoogieIcfgContainer [2022-12-11 23:55:39,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 23:55:39,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 23:55:39,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 23:55:39,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 23:55:39,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 11:55:38" (1/3) ... [2022-12-11 23:55:39,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70686859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:55:39, skipping insertion in model container [2022-12-11 23:55:39,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:55:39" (2/3) ... [2022-12-11 23:55:39,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70686859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:55:39, skipping insertion in model container [2022-12-11 23:55:39,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:55:39" (3/3) ... [2022-12-11 23:55:39,818 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_41-traces-ex-7_unknown_1_pos.i [2022-12-11 23:55:39,833 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 23:55:39,833 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 23:55:39,833 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 23:55:39,877 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 23:55:39,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 60 transitions, 125 flow [2022-12-11 23:55:39,938 INFO L130 PetriNetUnfolder]: 1/59 cut-off events. [2022-12-11 23:55:39,938 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 23:55:39,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2022-12-11 23:55:39,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 60 transitions, 125 flow [2022-12-11 23:55:39,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 105 flow [2022-12-11 23:55:39,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 23:55:39,969 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;@672b781, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 23:55:39,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-11 23:55:39,985 INFO L130 PetriNetUnfolder]: 0/50 cut-off events. [2022-12-11 23:55:39,985 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 23:55:39,985 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:55:39,986 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:55:39,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:55:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:55:39,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1808390897, now seen corresponding path program 1 times [2022-12-11 23:55:40,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:55:40,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254904425] [2022-12-11 23:55:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:55:40,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:55:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:55:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:55:40,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:55:40,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254904425] [2022-12-11 23:55:40,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254904425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:55:40,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:55:40,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 23:55:40,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860197117] [2022-12-11 23:55:40,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:55:40,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 23:55:40,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:55:40,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 23:55:40,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 23:55:40,521 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 60 [2022-12-11 23:55:40,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:55:40,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:55:40,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 60 [2022-12-11 23:55:40,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:55:40,620 INFO L130 PetriNetUnfolder]: 2/67 cut-off events. [2022-12-11 23:55:40,620 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-11 23:55:40,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 67 events. 2/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 2/69 useless extension candidates. Maximal degree in co-relation 51. Up to 6 conditions per place. [2022-12-11 23:55:40,623 INFO L137 encePairwiseOnDemand]: 55/60 looper letters, 5 selfloop transitions, 2 changer transitions 7/58 dead transitions. [2022-12-11 23:55:40,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 147 flow [2022-12-11 23:55:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 23:55:40,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 23:55:40,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 366 transitions. [2022-12-11 23:55:40,639 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8714285714285714 [2022-12-11 23:55:40,644 INFO L295 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2022-12-11 23:55:40,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 58 transitions, 147 flow [2022-12-11 23:55:40,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 51 transitions, 119 flow [2022-12-11 23:55:40,649 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 119 flow [2022-12-11 23:55:40,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:55:40,649 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:55:40,649 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:55:40,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 23:55:40,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:55:40,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:55:40,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2076112308, now seen corresponding path program 1 times [2022-12-11 23:55:40,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:55:40,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069378137] [2022-12-11 23:55:40,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:55:40,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:55:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:55:40,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:55:40,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:55:40,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069378137] [2022-12-11 23:55:40,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069378137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:55:40,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:55:40,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 23:55:40,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974885529] [2022-12-11 23:55:40,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:55:40,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 23:55:40,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:55:40,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 23:55:40,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-11 23:55:40,987 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 60 [2022-12-11 23:55:40,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:55:40,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:55:40,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 60 [2022-12-11 23:55:40,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:55:41,090 INFO L130 PetriNetUnfolder]: 8/82 cut-off events. [2022-12-11 23:55:41,090 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 23:55:41,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 82 events. 8/82 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 3 based on Foata normal form. 3/84 useless extension candidates. Maximal degree in co-relation 88. Up to 17 conditions per place. [2022-12-11 23:55:41,091 INFO L137 encePairwiseOnDemand]: 55/60 looper letters, 17 selfloop transitions, 5 changer transitions 1/54 dead transitions. [2022-12-11 23:55:41,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 171 flow [2022-12-11 23:55:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 23:55:41,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 23:55:41,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 215 transitions. [2022-12-11 23:55:41,097 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2022-12-11 23:55:41,098 INFO L295 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2022-12-11 23:55:41,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 54 transitions, 171 flow [2022-12-11 23:55:41,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 53 transitions, 167 flow [2022-12-11 23:55:41,099 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 167 flow [2022-12-11 23:55:41,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:55:41,100 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:55:41,100 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:55:41,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 23:55:41,100 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:55:41,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:55:41,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1161499389, now seen corresponding path program 1 times [2022-12-11 23:55:41,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:55:41,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411326575] [2022-12-11 23:55:41,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:55:41,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:55:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:55:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:55:41,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:55:41,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411326575] [2022-12-11 23:55:41,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411326575] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:55:41,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:55:41,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 23:55:41,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679626605] [2022-12-11 23:55:41,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:55:41,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 23:55:41,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:55:41,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 23:55:41,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 23:55:41,219 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 60 [2022-12-11 23:55:41,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:55:41,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:55:41,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 60 [2022-12-11 23:55:41,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:55:41,249 INFO L130 PetriNetUnfolder]: 3/75 cut-off events. [2022-12-11 23:55:41,249 INFO L131 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2022-12-11 23:55:41,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 75 events. 3/75 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 3/78 useless extension candidates. Maximal degree in co-relation 91. Up to 18 conditions per place. [2022-12-11 23:55:41,250 INFO L137 encePairwiseOnDemand]: 55/60 looper letters, 13 selfloop transitions, 6 changer transitions 0/56 dead transitions. [2022-12-11 23:55:41,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 217 flow [2022-12-11 23:55:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 23:55:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 23:55:41,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2022-12-11 23:55:41,251 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8388888888888889 [2022-12-11 23:55:41,252 INFO L295 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2022-12-11 23:55:41,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 56 transitions, 217 flow [2022-12-11 23:55:41,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 56 transitions, 217 flow [2022-12-11 23:55:41,253 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 217 flow [2022-12-11 23:55:41,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:55:41,254 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:55:41,254 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:55:41,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 23:55:41,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:55:41,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:55:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1853721431, now seen corresponding path program 2 times [2022-12-11 23:55:41,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:55:41,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994079794] [2022-12-11 23:55:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:55:41,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:55:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:55:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:55:41,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:55:41,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994079794] [2022-12-11 23:55:41,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994079794] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:55:41,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:55:41,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 23:55:41,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544028610] [2022-12-11 23:55:41,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:55:41,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 23:55:41,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:55:41,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 23:55:41,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-11 23:55:41,403 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 60 [2022-12-11 23:55:41,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:55:41,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:55:41,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 60 [2022-12-11 23:55:41,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:55:41,487 INFO L130 PetriNetUnfolder]: 0/56 cut-off events. [2022-12-11 23:55:41,488 INFO L131 PetriNetUnfolder]: For 39/41 co-relation queries the response was YES. [2022-12-11 23:55:41,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 56 events. 0/56 cut-off events. For 39/41 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs, 0 based on Foata normal form. 2/58 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2022-12-11 23:55:41,488 INFO L137 encePairwiseOnDemand]: 54/60 looper letters, 14 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2022-12-11 23:55:41,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 51 transitions, 227 flow [2022-12-11 23:55:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 23:55:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 23:55:41,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 211 transitions. [2022-12-11 23:55:41,490 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7033333333333334 [2022-12-11 23:55:41,491 INFO L295 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2022-12-11 23:55:41,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 51 transitions, 227 flow [2022-12-11 23:55:41,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 51 transitions, 227 flow [2022-12-11 23:55:41,492 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 227 flow [2022-12-11 23:55:41,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:55:41,492 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:55:41,492 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:55:41,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 23:55:41,493 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:55:41,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:55:41,493 INFO L85 PathProgramCache]: Analyzing trace with hash -849005933, now seen corresponding path program 1 times [2022-12-11 23:55:41,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:55:41,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701239430] [2022-12-11 23:55:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:55:41,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:55:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-11 23:55:41,515 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-11 23:55:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-11 23:55:41,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-11 23:55:41,556 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-11 23:55:41,557 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-11 23:55:41,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-12-11 23:55:41,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 23:55:41,559 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-12-11 23:55:41,564 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 23:55:41,564 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 23:55:41,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 11:55:41 BasicIcfg [2022-12-11 23:55:41,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 23:55:41,609 INFO L158 Benchmark]: Toolchain (without parser) took 2677.79ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 150.7MB in the beginning and 169.2MB in the end (delta: -18.6MB). Peak memory consumption was 18.0MB. Max. memory is 8.0GB. [2022-12-11 23:55:41,610 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 175.1MB. Free memory is still 151.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 23:55:41,610 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.13ms. Allocated memory is still 175.1MB. Free memory was 150.7MB in the beginning and 131.6MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-11 23:55:41,611 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.72ms. Allocated memory is still 175.1MB. Free memory was 131.6MB in the beginning and 129.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 23:55:41,612 INFO L158 Benchmark]: Boogie Preprocessor took 32.05ms. Allocated memory is still 175.1MB. Free memory was 129.5MB in the beginning and 128.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 23:55:41,614 INFO L158 Benchmark]: RCFGBuilder took 369.30ms. Allocated memory is still 175.1MB. Free memory was 128.5MB in the beginning and 115.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-11 23:55:41,616 INFO L158 Benchmark]: TraceAbstraction took 1793.07ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 114.3MB in the beginning and 169.2MB in the end (delta: -54.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 23:55:41,621 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 175.1MB. Free memory is still 151.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 421.13ms. Allocated memory is still 175.1MB. Free memory was 150.7MB in the beginning and 131.6MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.72ms. Allocated memory is still 175.1MB. Free memory was 131.6MB in the beginning and 129.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.05ms. Allocated memory is still 175.1MB. Free memory was 129.5MB in the beginning and 128.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 369.30ms. Allocated memory is still 175.1MB. Free memory was 128.5MB in the beginning and 115.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1793.07ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 114.3MB in the beginning and 169.2MB in the end (delta: -54.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L681] 0 int g = 0; VAL [g=0] [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; VAL [A={3:0}, g=0] [L683] 0 pthread_mutex_t D = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; VAL [A={3:0}, D={4:0}, g=0] [L693] 0 pthread_t id; VAL [A={3:0}, D={4:0}, g=0, id={5:0}] [L694] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, arg={0:0}, D={4:0}, g=0, id={5:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L687] 1 g = 17 VAL [A={3:0}, arg={0:0}, arg={0:0}, D={4:0}, g=17] [L698] CALL 0 __VERIFIER_assert(g == 0) [L19] COND TRUE 0 !(cond) VAL [\old(cond)=0, A={3:0}, arg={0:0}, arg={0:0}, cond=0, D={4:0}, g=17] [L19] 0 reach_error() VAL [\old(cond)=0, A={3:0}, arg={0:0}, arg={0:0}, cond=0, D={4:0}, g=17] - UnprovableResult [Line: 694]: 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 3 procedures, 72 locations, 2 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: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 115 IncrementalHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 20 mSDtfsCounter, 115 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=227occurred in iteration=4, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 32 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 509 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-11 23:55:41,641 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...