/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/bigshot_s.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 18:41:08,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 18:41:08,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 18:41:08,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 18:41:08,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 18:41:08,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 18:41:08,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 18:41:08,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 18:41:08,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 18:41:08,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 18:41:08,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 18:41:08,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 18:41:08,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 18:41:08,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 18:41:08,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 18:41:08,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 18:41:08,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 18:41:08,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 18:41:08,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 18:41:08,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 18:41:08,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 18:41:08,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 18:41:08,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 18:41:08,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 18:41:08,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 18:41:08,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 18:41:08,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 18:41:08,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 18:41:08,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 18:41:08,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 18:41:08,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 18:41:08,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 18:41:08,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 18:41:08,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 18:41:08,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 18:41:08,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 18:41:08,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 18:41:08,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 18:41:08,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 18:41:08,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 18:41:08,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 18:41:08,811 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 18:41:08,836 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 18:41:08,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 18:41:08,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 18:41:08,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 18:41:08,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 18:41:08,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 18:41:08,839 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 18:41:08,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 18:41:08,839 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 18:41:08,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 18:41:08,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 18:41:08,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 18:41:08,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 18:41:08,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 18:41:08,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 18:41:08,840 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 18:41:08,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 18:41:08,841 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 18:41:08,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 18:41:08,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 18:41:08,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 18:41:08,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 18:41:08,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 18:41:08,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 18:41:08,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 18:41:08,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 18:41:08,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 18:41:08,842 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 18:41:08,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 18:41:08,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 18:41:08,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 18:41:08,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 18:41:09,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 18:41:09,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 18:41:09,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 18:41:09,139 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 18:41:09,140 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 18:41:09,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s.i [2022-12-11 18:41:10,125 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 18:41:10,363 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 18:41:10,363 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s.i [2022-12-11 18:41:10,389 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/382a86c85/c86026630e294446b4323be02166055f/FLAG5bdac0b7d [2022-12-11 18:41:10,402 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/382a86c85/c86026630e294446b4323be02166055f [2022-12-11 18:41:10,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 18:41:10,405 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 18:41:10,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 18:41:10,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 18:41:10,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 18:41:10,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:10,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5e6b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10, skipping insertion in model container [2022-12-11 18:41:10,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:10,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 18:41:10,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 18:41:10,809 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/bigshot_s.i[55202,55215] [2022-12-11 18:41:10,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 18:41:10,833 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 18:41:10,861 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/bigshot_s.i[55202,55215] [2022-12-11 18:41:10,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 18:41:10,910 INFO L208 MainTranslator]: Completed translation [2022-12-11 18:41:10,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10 WrapperNode [2022-12-11 18:41:10,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 18:41:10,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 18:41:10,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 18:41:10,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 18:41:10,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:10,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:10,962 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2022-12-11 18:41:10,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 18:41:10,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 18:41:10,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 18:41:10,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 18:41:10,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:10,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:10,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:10,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:10,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:10,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:10,990 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:10,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:10,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 18:41:10,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 18:41:10,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 18:41:10,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 18:41:10,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:11,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 18:41:11,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:41:11,049 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 18:41:11,057 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 18:41:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 18:41:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 18:41:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-11 18:41:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 18:41:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 18:41:11,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 18:41:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 18:41:11,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 18:41:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 18:41:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 18:41:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 18:41:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 18:41:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 18:41:11,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 18:41:11,083 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 18:41:11,263 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 18:41:11,264 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 18:41:11,450 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 18:41:11,455 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 18:41:11,455 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-11 18:41:11,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 06:41:11 BoogieIcfgContainer [2022-12-11 18:41:11,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 18:41:11,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 18:41:11,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 18:41:11,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 18:41:11,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 06:41:10" (1/3) ... [2022-12-11 18:41:11,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ead84f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 06:41:11, skipping insertion in model container [2022-12-11 18:41:11,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10" (2/3) ... [2022-12-11 18:41:11,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ead84f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 06:41:11, skipping insertion in model container [2022-12-11 18:41:11,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 06:41:11" (3/3) ... [2022-12-11 18:41:11,463 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2022-12-11 18:41:11,478 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 18:41:11,478 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 18:41:11,478 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 18:41:11,547 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-11 18:41:11,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 87 transitions, 190 flow [2022-12-11 18:41:11,623 INFO L130 PetriNetUnfolder]: 5/85 cut-off events. [2022-12-11 18:41:11,623 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 18:41:11,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 5/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-12-11 18:41:11,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 87 transitions, 190 flow [2022-12-11 18:41:11,631 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 73 transitions, 158 flow [2022-12-11 18:41:11,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 18:41:11,647 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;@1d66cbdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 18:41:11,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 18:41:11,672 INFO L130 PetriNetUnfolder]: 4/72 cut-off events. [2022-12-11 18:41:11,673 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 18:41:11,673 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:41:11,673 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:41:11,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:41:11,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:41:11,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1691876008, now seen corresponding path program 1 times [2022-12-11 18:41:11,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:41:11,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527515457] [2022-12-11 18:41:11,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:41:11,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:41:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:41:11,977 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 18:41:11,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:41:11,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527515457] [2022-12-11 18:41:11,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527515457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:41:11,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:41:11,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 18:41:11,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143963971] [2022-12-11 18:41:11,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:41:11,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 18:41:11,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:41:12,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 18:41:12,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 18:41:12,017 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-12-11 18:41:12,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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 18:41:12,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:41:12,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-12-11 18:41:12,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:41:12,070 INFO L130 PetriNetUnfolder]: 2/71 cut-off events. [2022-12-11 18:41:12,070 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-11 18:41:12,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 71 events. 2/71 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 45. Up to 8 conditions per place. [2022-12-11 18:41:12,072 INFO L137 encePairwiseOnDemand]: 82/87 looper letters, 9 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2022-12-11 18:41:12,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 178 flow [2022-12-11 18:41:12,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 18:41:12,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 18:41:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2022-12-11 18:41:12,085 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8482758620689655 [2022-12-11 18:41:12,086 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 158 flow. Second operand 5 states and 369 transitions. [2022-12-11 18:41:12,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 178 flow [2022-12-11 18:41:12,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 71 transitions, 170 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-11 18:41:12,094 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 152 flow [2022-12-11 18:41:12,095 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2022-12-11 18:41:12,100 INFO L295 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2022-12-11 18:41:12,100 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 152 flow [2022-12-11 18:41:12,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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 18:41:12,101 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:41:12,101 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:41:12,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 18:41:12,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:41:12,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:41:12,103 INFO L85 PathProgramCache]: Analyzing trace with hash -765201644, now seen corresponding path program 1 times [2022-12-11 18:41:12,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:41:12,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347567355] [2022-12-11 18:41:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:41:12,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:41:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:41:12,237 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 18:41:12,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:41:12,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347567355] [2022-12-11 18:41:12,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347567355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:41:12,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:41:12,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 18:41:12,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970706361] [2022-12-11 18:41:12,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:41:12,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 18:41:12,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:41:12,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 18:41:12,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 18:41:12,240 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 87 [2022-12-11 18:41:12,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 67.33333333333333) internal successors, (404), 6 states have internal predecessors, (404), 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 18:41:12,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:41:12,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 87 [2022-12-11 18:41:12,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:41:12,310 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2022-12-11 18:41:12,311 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 18:41:12,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 70 events. 1/70 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2022-12-11 18:41:12,311 INFO L137 encePairwiseOnDemand]: 80/87 looper letters, 10 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2022-12-11 18:41:12,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 70 transitions, 182 flow [2022-12-11 18:41:12,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-11 18:41:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-11 18:41:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 407 transitions. [2022-12-11 18:41:12,313 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7796934865900383 [2022-12-11 18:41:12,313 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 152 flow. Second operand 6 states and 407 transitions. [2022-12-11 18:41:12,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 70 transitions, 182 flow [2022-12-11 18:41:12,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 70 transitions, 177 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-11 18:41:12,316 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 157 flow [2022-12-11 18:41:12,316 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=157, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2022-12-11 18:41:12,317 INFO L295 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2022-12-11 18:41:12,317 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 157 flow [2022-12-11 18:41:12,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.33333333333333) internal successors, (404), 6 states have internal predecessors, (404), 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 18:41:12,317 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:41:12,317 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:41:12,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 18:41:12,318 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:41:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:41:12,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1753884106, now seen corresponding path program 1 times [2022-12-11 18:41:12,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:41:12,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611474274] [2022-12-11 18:41:12,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:41:12,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:41:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:41:12,639 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 18:41:12,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:41:12,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611474274] [2022-12-11 18:41:12,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611474274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:41:12,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:41:12,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-11 18:41:12,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845952723] [2022-12-11 18:41:12,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:41:12,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-11 18:41:12,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:41:12,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-11 18:41:12,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-11 18:41:12,642 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 87 [2022-12-11 18:41:12,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 157 flow. Second operand has 11 states, 11 states have (on average 48.0) internal successors, (528), 11 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:41:12,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:41:12,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 87 [2022-12-11 18:41:12,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:41:12,803 INFO L130 PetriNetUnfolder]: 16/115 cut-off events. [2022-12-11 18:41:12,803 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-11 18:41:12,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 115 events. 16/115 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 1 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 128. Up to 20 conditions per place. [2022-12-11 18:41:12,804 INFO L137 encePairwiseOnDemand]: 77/87 looper letters, 36 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2022-12-11 18:41:12,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 81 transitions, 271 flow [2022-12-11 18:41:12,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 18:41:12,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 18:41:12,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 497 transitions. [2022-12-11 18:41:12,806 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5712643678160919 [2022-12-11 18:41:12,806 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 157 flow. Second operand 10 states and 497 transitions. [2022-12-11 18:41:12,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 81 transitions, 271 flow [2022-12-11 18:41:12,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 259 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-11 18:41:12,808 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 187 flow [2022-12-11 18:41:12,808 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=187, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2022-12-11 18:41:12,809 INFO L295 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2022-12-11 18:41:12,809 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 187 flow [2022-12-11 18:41:12,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 48.0) internal successors, (528), 11 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:41:12,810 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:41:12,810 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-11 18:41:12,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 18:41:12,810 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:41:12,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:41:12,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1947601992, now seen corresponding path program 1 times [2022-12-11 18:41:12,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:41:12,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250942227] [2022-12-11 18:41:12,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:41:12,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:41:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:41:13,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:13,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:41:13,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250942227] [2022-12-11 18:41:13,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250942227] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:41:13,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218981101] [2022-12-11 18:41:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:41:13,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:41:13,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:41:13,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:41:13,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 18:41:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:41:13,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-11 18:41:13,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:41:13,496 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-11 18:41:13,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-11 18:41:13,531 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-11 18:41:13,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-11 18:41:13,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 18:41:13,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 18:41:13,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 18:41:13,823 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-11 18:41:13,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-12-11 18:41:13,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 18:41:13,912 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 18:41:13,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-12-11 18:41:13,973 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 18:41:13,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-11 18:41:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:14,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:41:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:14,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218981101] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:41:14,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:41:14,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 18] total 44 [2022-12-11 18:41:14,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104237185] [2022-12-11 18:41:14,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:41:14,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-11 18:41:14,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:41:14,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-11 18:41:14,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1737, Unknown=0, NotChecked=0, Total=1892 [2022-12-11 18:41:14,685 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2022-12-11 18:41:14,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 187 flow. Second operand has 44 states, 44 states have (on average 31.0) internal successors, (1364), 44 states have internal predecessors, (1364), 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 18:41:14,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:41:14,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2022-12-11 18:41:14,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:41:16,889 INFO L130 PetriNetUnfolder]: 36/202 cut-off events. [2022-12-11 18:41:16,889 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-11 18:41:16,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 202 events. 36/202 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 529 event pairs, 2 based on Foata normal form. 4/205 useless extension candidates. Maximal degree in co-relation 337. Up to 35 conditions per place. [2022-12-11 18:41:16,891 INFO L137 encePairwiseOnDemand]: 68/87 looper letters, 57 selfloop transitions, 19 changer transitions 20/119 dead transitions. [2022-12-11 18:41:16,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 119 transitions, 495 flow [2022-12-11 18:41:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 18:41:16,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 18:41:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 855 transitions. [2022-12-11 18:41:16,893 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2022-12-11 18:41:16,893 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 187 flow. Second operand 27 states and 855 transitions. [2022-12-11 18:41:16,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 119 transitions, 495 flow [2022-12-11 18:41:16,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 119 transitions, 488 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-11 18:41:16,896 INFO L231 Difference]: Finished difference. Result has 120 places, 80 transitions, 284 flow [2022-12-11 18:41:16,896 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=284, PETRI_PLACES=120, PETRI_TRANSITIONS=80} [2022-12-11 18:41:16,897 INFO L295 CegarLoopForPetriNet]: 76 programPoint places, 44 predicate places. [2022-12-11 18:41:16,897 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 80 transitions, 284 flow [2022-12-11 18:41:16,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 31.0) internal successors, (1364), 44 states have internal predecessors, (1364), 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 18:41:16,898 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:41:16,898 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:41:16,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-11 18:41:17,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:41:17,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:41:17,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:41:17,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1148967284, now seen corresponding path program 2 times [2022-12-11 18:41:17,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:41:17,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442054957] [2022-12-11 18:41:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:41:17,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:41:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:41:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:17,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:41:17,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442054957] [2022-12-11 18:41:17,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442054957] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:41:17,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791725464] [2022-12-11 18:41:17,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 18:41:17,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:41:17,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:41:17,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:41:17,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 18:41:17,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 18:41:17,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:41:17,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-11 18:41:17,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:41:17,889 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-11 18:41:17,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-11 18:41:17,930 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-11 18:41:17,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-11 18:41:17,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 18:41:18,032 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-11 18:41:18,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-11 18:41:18,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 18:41:18,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 18:41:18,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 18:41:18,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 18:41:18,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 18:41:18,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-11 18:41:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:18,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:41:18,756 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_117 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_117) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-12-11 18:41:18,840 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_117 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_117) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2022-12-11 18:41:18,863 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_117 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_117) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2022-12-11 18:41:19,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 486 treesize of output 466 [2022-12-11 18:41:19,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 462 treesize of output 430 [2022-12-11 18:41:19,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 430 treesize of output 414 [2022-12-11 18:41:19,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 203 [2022-12-11 18:41:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 26 not checked. [2022-12-11 18:41:20,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791725464] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:41:20,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:41:20,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 48 [2022-12-11 18:41:20,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415166781] [2022-12-11 18:41:20,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:41:20,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-11 18:41:20,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:41:20,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-11 18:41:20,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1812, Unknown=10, NotChecked=264, Total=2256 [2022-12-11 18:41:20,118 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 87 [2022-12-11 18:41:20,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 80 transitions, 284 flow. Second operand has 48 states, 48 states have (on average 39.979166666666664) internal successors, (1919), 48 states have internal predecessors, (1919), 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 18:41:20,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:41:20,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 87 [2022-12-11 18:41:20,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:41:22,391 INFO L130 PetriNetUnfolder]: 39/265 cut-off events. [2022-12-11 18:41:22,391 INFO L131 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2022-12-11 18:41:22,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 265 events. 39/265 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 836 event pairs, 1 based on Foata normal form. 3/267 useless extension candidates. Maximal degree in co-relation 653. Up to 35 conditions per place. [2022-12-11 18:41:22,393 INFO L137 encePairwiseOnDemand]: 71/87 looper letters, 78 selfloop transitions, 32 changer transitions 16/154 dead transitions. [2022-12-11 18:41:22,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 154 transitions, 842 flow [2022-12-11 18:41:22,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-11 18:41:22,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-11 18:41:22,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1312 transitions. [2022-12-11 18:41:22,396 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.47126436781609193 [2022-12-11 18:41:22,396 INFO L175 Difference]: Start difference. First operand has 120 places, 80 transitions, 284 flow. Second operand 32 states and 1312 transitions. [2022-12-11 18:41:22,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 154 transitions, 842 flow [2022-12-11 18:41:22,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 154 transitions, 780 flow, removed 16 selfloop flow, removed 19 redundant places. [2022-12-11 18:41:22,400 INFO L231 Difference]: Finished difference. Result has 134 places, 97 transitions, 437 flow [2022-12-11 18:41:22,401 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=437, PETRI_PLACES=134, PETRI_TRANSITIONS=97} [2022-12-11 18:41:22,401 INFO L295 CegarLoopForPetriNet]: 76 programPoint places, 58 predicate places. [2022-12-11 18:41:22,401 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 97 transitions, 437 flow [2022-12-11 18:41:22,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 39.979166666666664) internal successors, (1919), 48 states have internal predecessors, (1919), 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 18:41:22,402 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:41:22,402 INFO L214 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:22,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-11 18:41:22,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:41:22,607 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:41:22,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:41:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1754632694, now seen corresponding path program 3 times [2022-12-11 18:41:22,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:41:22,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630550612] [2022-12-11 18:41:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:41:22,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:41:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:41:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:23,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:41:23,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630550612] [2022-12-11 18:41:23,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630550612] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:41:23,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799901574] [2022-12-11 18:41:23,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 18:41:23,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:41:23,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:41:23,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:41:23,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 18:41:23,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-11 18:41:23,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:41:23,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-11 18:41:23,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:41:23,482 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-11 18:41:23,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-11 18:41:23,536 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-11 18:41:23,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-11 18:41:23,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 18:41:23,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 18:41:23,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 18:41:23,910 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-11 18:41:23,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-12-11 18:41:23,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 18:41:24,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 18:41:24,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 18:41:24,002 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 18:41:24,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-11 18:41:24,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 18:41:24,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 18:41:24,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 18:41:24,094 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 18:41:24,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-11 18:41:24,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 18:41:24,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 18:41:24,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 18:41:24,219 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 18:41:24,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-11 18:41:24,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 18:41:24,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 18:41:24,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 18:41:24,328 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 18:41:24,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-11 18:41:24,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 18:41:24,421 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 18:41:24,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-11 18:41:24,484 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 18:41:24,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-11 18:41:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 18 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:24,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:41:58,530 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_169 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_37| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_38| Int) (v_ArrVal_176 Int) (v_ArrVal_173 Int) (v_ArrVal_171 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_36| Int)) (or (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_169) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_38| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_171) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_37| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_173) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_36| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_176)) c_~v~0.base) c_~v~0.offset)) (not (<= (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_37| 1) |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_36|)) (not (<= (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_38| 1) |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_37|)) (not (<= (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 1) |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_38|)))) is different from false [2022-12-11 18:42:00,581 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_39| Int)) (or (not (<= (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 1) |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_39|)) (forall ((v_ArrVal_169 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_37| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_38| Int) (v_ArrVal_176 Int) (v_ArrVal_173 Int) (v_ArrVal_171 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_36| Int)) (or (not (<= (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_39| 1) |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_38|)) (not (<= (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_37| 1) |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_36|)) (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_39| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_169) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_38| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_171) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_37| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_173) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_36| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_176)) c_~v~0.base) c_~v~0.offset)) (not (<= (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_38| 1) |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_37|)))))) is different from false [2022-12-11 18:44:08,740 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 18:44:08,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 734 treesize of output 724 [2022-12-11 18:44:08,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13790 treesize of output 13750 [2022-12-11 18:44:08,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21942 treesize of output 21844 [2022-12-11 18:49:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 12 refuted. 12 times theorem prover too weak. 0 trivial. 19 not checked. [2022-12-11 18:49:47,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799901574] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:49:47,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:49:47,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26, 27] total 65 [2022-12-11 18:49:47,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271048650] [2022-12-11 18:49:47,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:49:47,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-12-11 18:49:47,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:49:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-12-11 18:49:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3532, Unknown=77, NotChecked=246, Total=4160 [2022-12-11 18:49:47,765 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 87 [2022-12-11 18:49:47,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 97 transitions, 437 flow. Second operand has 65 states, 65 states have (on average 29.923076923076923) internal successors, (1945), 65 states have internal predecessors, (1945), 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 18:49:47,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:49:47,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 87 [2022-12-11 18:49:47,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:50:16,460 WARN L233 SmtUtils]: Spent 27.18s on a formula simplification. DAG size of input: 90 DAG size of output: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 18:50:25,392 INFO L130 PetriNetUnfolder]: 43/279 cut-off events. [2022-12-11 18:50:25,392 INFO L131 PetriNetUnfolder]: For 609/609 co-relation queries the response was YES. [2022-12-11 18:50:25,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 279 events. 43/279 cut-off events. For 609/609 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 895 event pairs, 2 based on Foata normal form. 5/283 useless extension candidates. Maximal degree in co-relation 861. Up to 59 conditions per place. [2022-12-11 18:50:25,395 INFO L137 encePairwiseOnDemand]: 65/87 looper letters, 0 selfloop transitions, 0 changer transitions 131/131 dead transitions. [2022-12-11 18:50:25,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 131 transitions, 878 flow [2022-12-11 18:50:25,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 18:50:25,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 18:50:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 856 transitions. [2022-12-11 18:50:25,397 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35139573070607555 [2022-12-11 18:50:25,397 INFO L175 Difference]: Start difference. First operand has 134 places, 97 transitions, 437 flow. Second operand 28 states and 856 transitions. [2022-12-11 18:50:25,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 131 transitions, 878 flow [2022-12-11 18:50:25,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 131 transitions, 830 flow, removed 10 selfloop flow, removed 12 redundant places. [2022-12-11 18:50:25,401 INFO L231 Difference]: Finished difference. Result has 147 places, 0 transitions, 0 flow [2022-12-11 18:50:25,401 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=0, PETRI_PLACES=147, PETRI_TRANSITIONS=0} [2022-12-11 18:50:25,402 INFO L295 CegarLoopForPetriNet]: 76 programPoint places, 71 predicate places. [2022-12-11 18:50:25,402 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 0 transitions, 0 flow [2022-12-11 18:50:25,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 29.923076923076923) internal successors, (1945), 65 states have internal predecessors, (1945), 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 18:50:25,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-11 18:50:25,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-11 18:50:25,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-11 18:50:25,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-11 18:50:25,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:50:25,606 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-12-11 18:50:25,608 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 18:50:25,608 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 18:50:25,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 06:50:25 BasicIcfg [2022-12-11 18:50:25,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 18:50:25,611 INFO L158 Benchmark]: Toolchain (without parser) took 555206.61ms. Allocated memory was 237.0MB in the beginning and 912.3MB in the end (delta: 675.3MB). Free memory was 211.5MB in the beginning and 658.8MB in the end (delta: -447.3MB). Peak memory consumption was 229.0MB. Max. memory is 8.0GB. [2022-12-11 18:50:25,612 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 237.0MB. Free memory was 213.8MB in the beginning and 213.7MB in the end (delta: 86.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 18:50:25,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 504.32ms. Allocated memory is still 237.0MB. Free memory was 211.0MB in the beginning and 178.8MB in the end (delta: 32.1MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2022-12-11 18:50:25,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.97ms. Allocated memory is still 237.0MB. Free memory was 178.8MB in the beginning and 176.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 18:50:25,612 INFO L158 Benchmark]: Boogie Preprocessor took 29.24ms. Allocated memory is still 237.0MB. Free memory was 176.4MB in the beginning and 174.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 18:50:25,612 INFO L158 Benchmark]: RCFGBuilder took 464.55ms. Allocated memory is still 237.0MB. Free memory was 174.8MB in the beginning and 160.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-11 18:50:25,612 INFO L158 Benchmark]: TraceAbstraction took 554151.97ms. Allocated memory was 237.0MB in the beginning and 912.3MB in the end (delta: 675.3MB). Free memory was 159.1MB in the beginning and 658.8MB in the end (delta: -499.7MB). Peak memory consumption was 176.6MB. Max. memory is 8.0GB. [2022-12-11 18:50:25,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 237.0MB. Free memory was 213.8MB in the beginning and 213.7MB in the end (delta: 86.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 504.32ms. Allocated memory is still 237.0MB. Free memory was 211.0MB in the beginning and 178.8MB in the end (delta: 32.1MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.97ms. Allocated memory is still 237.0MB. Free memory was 178.8MB in the beginning and 176.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.24ms. Allocated memory is still 237.0MB. Free memory was 176.4MB in the beginning and 174.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 464.55ms. Allocated memory is still 237.0MB. Free memory was 174.8MB in the beginning and 160.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 554151.97ms. Allocated memory was 237.0MB in the beginning and 912.3MB in the end (delta: 675.3MB). Free memory was 159.1MB in the beginning and 658.8MB in the end (delta: -499.7MB). Peak memory consumption was 176.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1107]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 108 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: 554.0s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 42.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 27 mSolverCounterUnknown, 2447 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2447 mSDsluCounter, 1197 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 436 IncrementalHoareTripleChecker+Unchecked, 1108 mSDsCounter, 452 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4455 IncrementalHoareTripleChecker+Invalid, 5370 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 452 mSolverCounterUnsat, 89 mSDtfsCounter, 4455 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 668 GetRequests, 398 SyntacticMatches, 22 SemanticMatches, 248 ConstructedPredicates, 5 IntricatePredicates, 2 DeprecatedPredicates, 3788 ImplicationChecksByTransitivity, 204.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=437occurred in iteration=5, InterpolantAutomatonStates: 108, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 510.1s InterpolantComputationTime, 678 NumberOfCodeBlocks, 678 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 910 ConstructedInterpolants, 138 QuantifiedInterpolants, 14104 SizeOfPredicates, 48 NumberOfNonLiveVariables, 699 ConjunctsInSsa, 145 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 30/282 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-11 18:50:25,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...